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query stringlengths 1 13.4k | pos stringlengths 1 61k | neg stringlengths 1 63.9k | query_lang stringclasses 147
values | __index_level_0__ int64 0 3.11M |
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Power Allocation for NOMA System via Dual Sub-gradient Descent | Non-orthogonal multiple access (NOMA) has attracted great attention as a promising downlink multiple access technique for the next generation cellular networks (5G) due to its superior spectral efficiency. Power allocation of multi-user scenario in NOMA is a challenging issue and most of existing works focus on two-use... | The paper presents a VHDL-AMS based approach to the Switched-Current (SI) Sigma-Delta Modulator design. EDA tools are presented, which translate the prototype VHDL-AMS description into SI realization. Another tool helps the designer to create the layout. The paper also describes a new proposed current mode comparator, ... | eng_Latn | 13,300 |
NbTiN/SiO/sub 2//Al tuning circuits for low-noise 1 THz SIS mixers | Waveguide SIS mixers in which Nb/Al-AlO/sub x//Nb tunnel junctions are integrated with NbTiN/SiO//sub 2//Al tuning circuits are shown to yield receiver noise temperatures as low as 565 K at 970 GHz. Analyzing the noise and gain of one such receiver, it is shown that the NbTiN ground plane is low-loss (<0.6 dB) at 970 G... | By employing the notion of communication sequence and lifting techniques,a class of multiple-input-multipleoutput(MIMO) networked control systems(NCSs) with communication constraints is modeled into an extended state-space model with non-uniformly sampling in which control and scheduling are integrated.Based on linear ... | eng_Latn | 13,301 |
A surface equivalence-based method to enable rapid design and layout iterations of coupled electromagnetic components in integrated packages | A novel methodology is presented that expedites the electromagnetic analysis in the design cycle of individual layout components in close proximity to other radiating and electromagnetic structures. The proposed method retains all the advantages of a surface based moment method technique, but avoids explicit modeling o... | We investigate multirate multicarrier code-division multiple-access (MC-CDMA) downlink systems with multicode transmission. Specifically, we design a new linear equalizer that outperforms the minimum mean-squared error (MMSE) per-carrier equalizer, without requiring the spreading codes of the interfering users. The com... | eng_Latn | 13,302 |
Analysis of Passive Intermodulation Effect on OFDM Frame Synchronization | Passive intermodulation can lead to a decrease in the performance of frame synchronization for the orthogonal-frequency-division multiplexing (OFDM) systems. In this paper, the Schmidl&Cox algorithm of frame synchronization is simplified by difference calculation to avoid overly complicated analysis. The statistical pr... | Follower jamming is a class of jamming way which is very harmful to the frequency hopping system. Low density parity check (LDPC) code is employed in frequency hopping system to combat follower jamming in this paper. The characteristics of follower jamming is introduced firstly, and then the model of LDPC coded FH syst... | kor_Hang | 13,303 |
Mechanical intermittent water flooding technique | A new intermittent water flooding technique is developed . A tractor is taken as power unit for pulling a tanker and driving a water injection pump. The pressure water flows into a tube through a rubber hose, a water flood gun and a snap joint, then the water is injected into formation through the check valve in the tu... | This chapter is dedicated to impulse radio as it is a very prominent form of UWB. Initially, impulse radio (IR) is introduced and generic transceiver architecture for IR is presented. Then, common and custom tailored pulse shapes for impulse radios are discussed. Various IR modulation techniques are presented and their... | eng_Latn | 13,304 |
Development of Home Appliances Controller with DTMF Signal | This paper presents the development of home appliances controller design that utilizes Dual-Tone Multi Frequency (DTMF) signal from the landline telephone. The device contains microcontroller that links with a decoder IC that converts DTMF signal into binary codes and vice versa. It is proven that the device enables re... | Chalmers University of TechnologyDepartment of Information TheoryS-412 96 Gothenburg, Swedenphone +46 31 772 17 51 or +46 70 565 48 20fax +46 31 772 17 48e-mail Arne.Svensson@It.Chalmers.SeAbstract. Novel coherent detectors for DQPSKand π/4-DQPSK on fading channels are pre-sented. The phase reference for the decisionde... | eng_Latn | 13,305 |
Application of the ONETRAN and TIMEX codes to shielding problems | Some of the unique features of importance to shielding calculations available in the ONETRAN and TIMEX codes are described. The results of two typical shielding problems which display the advantages of these two codes are presented. 3 figures. | Remote observing with Caltech's millimeter wave array at the Owens Valley Radio Observatory (OVRO) is being extended to use the graphical capabilities commonly available on computers today. To allow the instrument to be clearly presented to the user, a rich interface has been developed that combines the use of color hi... | eng_Latn | 13,306 |
Method and system for alerting a user of the mobile communication device | The present invention provides a method to alert the user of a mobile communication device (110) (200) and a control system (110). The method includes the steps of detecting that the vehicle (114) receiving a communication request at the mobile communication device within (216), in response to receiving the communicati... | A neural network based multiuser detector for DS-CDMA systems is presented. By using the minimum output energy criterion, the detector is formulated as a constrained optimization problem and is then resolved efficiently by using neural network. The computational complexity of the proposed detector is only O(N), making ... | eng_Latn | 13,307 |
Optical module, optical device and wearable display device | An optical module, an optical device and a wearable display device are disclosed. The wearable display device (10) comprises a micro display module (112) for outputting a display source; the optical module (113) is used for magnifying and projecting the display source to an exit pupil (P) and includes an first optical ... | As the demand of high quality service in next generation wireless communication systems, a high performance of data transmission requires an increase of spectrum efficiency and an improvement of error performance in wireless communication systems. In this paper, we propose a multi-user multiple-input multiple-output (M... | eng_Latn | 13,308 |
A 5.6 GHz Low Power Balanced VCO in 0.18 $\mu$m CMOS | A 5.6 GHz balanced voltage-controlled oscillator (VCO) is designed and implemented in a 0.18 mum CMOS 1P6M process. It consists of two single-ended complementary Colpitts LC-tank VCOs coupled by two pairs of varactors. At the supply voltage of 1.2 V, the output phase noise of the VCO is -119.13 dBc/Hz at 1MHz offset fr... | In this paper we present a method for reconfiguring Virtual Objects (VOs) during run-time. VOs are semantic descriptions of ICT objects and the associated physical objects and phenomena they observe. VOs also include software modules to expose ICT object functionalities as IoT services for re-use. In our case study we ... | kor_Hang | 13,309 |
Optimal delay-power tradeoff in sparse delay tolerant networks: a preliminary study | In this paper we present a first attempt to study analytically the tradeoff between delivery delay and resource consumption for epidemic routing in Delay Tolerant Networks. We assume that the nodes cooperate in order to minimize a common cost equal to a weighted sum of the packet delivery delay and the total number of ... | A novel 2- and 3-D space spectral domain analysis (SSDA) simulator for microstrip and CPW transmission line discontinuities is described. The characteristic impedance, effective dielectric constant, and S-parameters of different type of transmission lines and discontinuities shapes can be computed. The topology of stru... | eng_Latn | 13,310 |
Interface implementation of DSP based on 8-bit parallel A/D converter MAX153 | Digital signal processing is one of the most important technology in digital communication. The paper brought forward an interface method of MAX153 and DSP on the basis of MAX153's features, and provided the principle diagram and the program of DSP. | Summary A low frequency noise analysing system is set up with a multi-channel detector. The multi-channel detector includes a PCD Image Sensor which has 256 sensing elements. Light output of a laser diode is divided into various wavelengths. The light spectral intensities are measured at various wavelengths. | eng_Latn | 13,311 |
The wireless communication apparatus and radio communication method | A wireless communication device for communicating with an upper device and a lower device, is provided with a beacon reception unit and a beacon transmission unit. The beacon reception unit receives first regular beacon signals (351) transmitted from the upper device. When the beacon reception unit receives the first r... | In this paper a programmable and area-efficient decoder architecture supporting two decoding algorithms for Block-LDPC codes is presented. The novel decoder can be configured to decode in either TPMP or TDMP decoding mode according to different Block-LDPC codes, essentially combining the advantages of two decoding algo... | eng_Latn | 13,312 |
Prophylactic cranial irradiation with combined modality therapy for patients with locally advanced non-small cell lung cancer. | Central nervous system (CNS) metastasis is a significant problem for many patients with non-small cell lung cancer (NSCLC). The earlier data reported a high incidence of CNS metastasis in patients with locally advanced NSCLC who were treated with radiotherapy alone. However, poor control of both thoracic and extracrani... | In cloud radio access networks (C-RANs), the baseband processing of the available macro- or pico/femto-base stations (BSs) is migrated to control units, each of which manages a subset of BS antennas. The centralized information processing at the control units enables effective interference management. The main roadbloc... | eng_Latn | 13,313 |
Rectangular tunnel double-bundle anterior cruciate ligament reconstruction with bone-patellar tendon-bone graft to mimic natural fiber arrangement. | We describe our current technique of anatomic, double-bundle (DB), rectangular tunnel anterior cruciate ligament (ACL) reconstruction with bone-patellar tendon-bone (BPTB) graft. This technique mimics the natural, or anatomic, arrangement of the native ACL fibers. This technique has the following advantages: (1) creati... | In this paper, we consider utilizing the space-time codes in the wideband CDMA system. We assume that there are multiple resolvable paths in the frequency selective fading channel. Analytical results show that in addition to spatial diversity, another diversity gain called multipath diversity is achievable. Performance... | eng_Latn | 13,314 |
Superiority of Superposition Multiaccess With Single-User Decoding Over TDMA in the Low SNR Regime | This paper studies the Gaussian multiaccess channel with multiantenna basestation in the low signal to noise ratio (SNR) regime. We compare the spectral efficiencies of the optimal superposition channel sharing scheme and two simple alternatives: the time division multiaccess (TDMA) scheme and superposition multiaccess... | A best and efficiently to provide a system and method capable of setting up a resource by the receiving device and the wireless network. A transmitting device several QoS parameters negotiated, signaling to the receiving devices of the session during the session setup procedure. Guaranteed bit rate, maximum bit rate, a... | eng_Latn | 13,315 |
Three-Mode Reconfigurable Rectifier for DC-DC Converters with Wide Input Voltage Range | Novel reconfigurable rectifier circuit is presented. It features three operating modes: full-bridge rectifier, voltage doubler rectifier, voltage quadrupler rectifier. After the rectifier topology is introduced, a case study dc-dc converter based on quasi-Z-source full-bridge topology is presented. An experimental prot... | This paper introduces the optimal widely linear (WL) minimum variance distorsionless response (MVDR) beamformer for the reception of an unknown signal of interest (SOI) corrupted by potentially second order (SO) noncircular background noise and interference. The SOI, whose waveform is unknown, is assumed to be SO nonci... | eng_Latn | 13,316 |
A 100 W tri-band LDMOS integrated Doherty amplifier for LTE-advanced applications | A Doherty amplifier architecture with integrated input splitter and output combiner, allowing bandwidth extension, is described. Based on this approach, a very compact 100W symmetrical LDMOS Doherty amplifier has been designed and characterized in the 1.805 to 2.17 GHz frequency band. It can achieve 15.9 dB maximum gai... | This paper addresses the problem of channel and propagation delay estimation in asynchronous DS/CDMA systems. We consider the uplink connection in DS/CDMA with long spreading codes. The MIMO stochastic gradient algorithm proposed in [6] is estimating a linear combination of the channel impulse responses and the propaga... | eng_Latn | 13,317 |
Downlink Capacity of Distributed Antenna Systems in a Multi-Cell Environment | In this paper, the downlink performance of a distributed antenna system (DAS) with random antenna layout is investigated. We address the problem of characterizing the downlink capacity with the generalized assumptions: (a1) per distributed antenna power constraint, (a2) generalized mobile terminals equipped with multip... | The data acquisition system for the CMS experiment at the Large Hadron Collider (LHC) will require a large and high performance event building network.Several architectures and swithch technologies are currently being evaluated.This paper describes demonstrators which have been set up to study a small-scale event build... | eng_Latn | 13,318 |
Design and performance of a spread spectrum data communications system using delta modulation with a dithered clock | Abstract : Digital modulation schemes and spread spectrum techniques are of major importance in modern communications. This thesis investigates a delta modulation/demodulation scheme and direct sequence spreading of the digital data. The clock rate is dithered to enhance the low probability of intercept advantage of sp... | A finite difference scheme for the one-dimensional space fractional diffusion equation is presented and analysed. The scheme is constructed by modifying the shifted Grunwald approximation to the spatial fractional derivative and using an asymmetric discretisation technique. By calculating the unknowns in differential n... | eng_Latn | 13,319 |
New Generation of Clusterable In-FEEP Emitters | Based on the lessons learned during the GOCE Microthruster Program, ARC Seibersdorf research is now developing a new generation of clusterable InFEEP emitters, which shall enable an operation with a single PCU with drastically reduced costs and complexity, and shall operate each single emitter within the cluster at a l... | Chalmers University of TechnologyDepartment of Information TheoryS-412 96 Gothenburg, Swedenphone +46 31 772 17 51 or +46 70 565 48 20fax +46 31 772 17 48e-mail Arne.Svensson@It.Chalmers.SeAbstract. Novel coherent detectors for DQPSKand π/4-DQPSK on fading channels are pre-sented. The phase reference for the decisionde... | kor_Hang | 13,320 |
Double-beta decay in the pseudo SU(3) scheme | Abstract We estimate the double-beta half-life in the two-neutrino mode of several heavy deformed nuclei using the pseudo SU(3) shell-model scheme. In this approach, we used a recently developed summation procedure, avoiding the closure approximation. We find forbidden decays for five potential double-beta emitters and... | Fully digital transmitters have been thoroughly explored over the last few years to develop a novel type of agile, reconfigurable, multi-band, multi-standard and highly-efficient transmitters. However, with regard to agility and reconfigurability, current state-of-the-art approaches are still very restrictive. This pap... | eng_Latn | 13,321 |
Hybrid linear-iterative detection algorithms for MIMO CDMA systems in multipath channels | We assume a CDMA downlink multiuser scenario, where the base station is equipped with multiple transmit antennas, and each user has multiple receive antennas. For this setup we propose a new, computationally effective MIMO multiuser detector for frequency selective channels. We exploit the fact that the interference ma... | Today, SiGe HBT cut-off frequencies are higher than 230 GHz (Chevalier et al., 2004) and this increase allows new millimeter wave (MMW) applications on silicon such as 60 GHz WLAN and 77 GHz automotive radar. One of the success keys is then the passive integration. This study focuses on a 52 GHz silicon integrated ante... | eng_Latn | 13,322 |
A novel high PSRR bandgap over a wide frequency range | This paper describes a novel bandgap reference with high PSRR over a wide frequency range. The design utilizes an internally regulated supply voltage without high gain feedback loop. Thus improve PSRR even at high frequency. Additional transistors are added to further improve supply rejection and minimize the second or... | This paper presents the dynamic RF link estimation result for telemetry system of KSLV (Korea Space Launch Vehicle)-I. In particular, it utilizes the parameters of the instantaneous vehicle antenna gain pattern in three dimensions, the improvement by polarization diversity combiner at the ground receiver, and the free ... | eng_Latn | 13,323 |
Design and simulation of wireless communication system based on SystemView | The modulation module and RF emission module in transmitter system,and RF receive module and demodulation module in receiver system of modern wireless communication system are analyzed.The SystemView software was used as platform to construct a model of modern wireless communication system.The simulation analysis for w... | Starting from 2.5D MHD modelling of solar flares on a global scale we calculate (using the PIC and test-particle simulations) the radio and X-ray emissions generated in solar flare reconnection. Our results – the radio and X-ray spectra and brightness distributions, and their dynamics – are directly comparable with obs... | eng_Latn | 13,324 |
Fairness of adaptive multimedia applications | We present a scalable scheme called the direct adjustment algorithm (DAA) for adapting the transmission rate of multimedia applications to the congestion level of the network. The DAA is based on the end-to-end real time transport protocol (RTP). Results achieved through simulations and measurements suggest the efficie... | We propose a novel machine learning based equalization algorithm for bandwidth-limited IM-DD PON in C-band. 50Gb/s/λ. PAM4 transmission is demonstrated over 20km SSMF using a 10G-class transmitter with 21dB loss budget without amplification. | eng_Latn | 13,325 |
DC Link Voltage Stabilisation in Hybrid Renewable Diesel Systems | Constant Speed diesel generators have been used in remote and isolated areas to provide electricity for over half a century and in this time they have remained largely unchanged. Although they have been mated with other forms of generation, especially wind and photovoltaic successfully but generally to the detriment of... | We present a new order statistics based diversity combining scheme (OSDC) for combining a set of independently fading signal amplitudes. The OSDC orders all the received signal amplitudes and uses only the two strongest signals in the combining process. The decision as to whether to use only the strongest or both the s... | deu_Latn | 13,326 |
Crimp in Wool: Cortical Segmentation and Tensile Properties of Well-Crimped and Abnormally Crimped Fibres of Merino Wool | Poorly crimped (or doggy) fibres, produced by follicles with hyperplasia of the outer root sheath tissue, have greater proportions of paracortex than adjacent well-crimped fibres. Associated with this increase in paracortex is an increase in strength, as indicated by significant increases in the stresses in wet poorly ... | In this paper, we investigate the performance of the Sub-carrier Multiplexed-Free Space Optics (SCM-FSO) for transmitting Code Division Multiple Access (CDMA) signals in terms of Carrier-to-Noise-plus-Interference Ratio (CNIR) and Bit Error Rate (BER), under Gamma-Gamma turbulent FSO channel. We propose an analytical m... | eng_Latn | 13,327 |
An Application Research on Adding Windows Technology in NC-OFDM Systems | This paper discusses the inherent mechanism of adding windows technology and its application in NC-OFDM systems,for two windows and different roll-off factors,the simulation is conducted to compare the performance of the power spectrum out-of-band attenuation of the NC-OFDM signals.The results indicate that the attenua... | : ::: Deborah Winslow is contributing editor of Gateway to NSF, the National Science Foundation column in Anthropology News. | eng_Latn | 13,328 |
Fiber Array Unit with Reduced Clad Fibers for High-Density Fiber-Chip Coupling | We discuss the integration of G.657-compatible reduced-clad bend-insensitive (RCBI) fibers into two-dimensional fiber array units (FAUs) and into FAUs incorporating 90-degree bends to enable high-density and small form-factor fiber-chip connectivity solutions. | In this paper, we consider utilizing the space-time codes in the wideband CDMA system. We assume that there are multiple resolvable paths in the frequency selective fading channel. Analytical results show that in addition to spatial diversity, another diversity gain called multipath diversity is achievable. Performance... | eng_Latn | 13,329 |
Tunable delta-sigma modulator for agile all-digital transmitters | Fully digital transmitters have been thoroughly explored over the last few years to develop a novel type of agile, reconfigurable, multi-band, multi-standard and highly-efficient transmitters. However, with regard to agility and reconfigurability, current state-of-the-art approaches are still very restrictive. This pap... | This paper addresses the problem of channel and propagation delay estimation in asynchronous DS/CDMA systems. We consider the uplink connection in DS/CDMA with long spreading codes. The MIMO stochastic gradient algorithm proposed in [6] is estimating a linear combination of the channel impulse responses and the propaga... | eng_Latn | 13,330 |
Urofacial (Ochoa) Syndrome - A Case Report | Urofacial (Ochoa) syndrome is a very rare autosomal recessive disorder characterized by a peculiar inverted facial expression, mainly when smiling or crying and urinary abnormalities. A 5-year-old boy, born of non- consanguineous marriage presented with characteristic facial grimace, enuresis, constipation and delayed ... | The fifth generation (5G) wireless network faces unprecedented massive concurrent random access requests in uplink (UL) contention-based (CB) transmission. In this paper, a non-orthogonal coded access (NOCA) UL transmission in combination with parallel interference cancellation (PIC) based reception scheme at base stat... | kor_Hang | 13,331 |
Power Controlled DS-CDMA Uplink with a HD-PIC Receiver | A hard-decision parallel interference cancellation receiver suitable for closed-loop power controlled CDMA uplink is introduced. Receiver algorithms for cancellation and SIR estimation are presented. A simple model for inter-cell interference is proposed to gain insight into the detector performance in cellular CDMA ne... | Systems on Chip performances in terms of speed and power dissipation is becoming dominated by communication between the cores. To overcome the limitations of traditional bus architectures, nowadays Network-on-Chip architectures are adopted. The Dynamic Power Management architecture and algorithm and Network-on-Chip top... | eng_Latn | 13,332 |
A simple method for direct compensation for kinematic energy spread using a silicon PSD | Abstract A simple method of compensating for the kinematic energy spread of the particles from a nuclear reaction detected in a silicon PSD is described. The technique relies on a suitable choice of the series resistor for the reaction of interest and the degree of compensation is shown to be equivalent to the first or... | Abstract Optical wireless communication technologies are finding a greater interest and wider attention within the research community of late. In this paper, we investigate the performance of a free space optical communication system over a generic propagation model called M -distributed channel in the presence of atmo... | eng_Latn | 13,333 |
Scattering of Gaussian beam by a ferrite cylinder | The scattering of a Gaussian beam by a ferrite cylinder is analyzed using two methods. The spatial pictures in the amplitude of the total Gaussian beam near the cylinder resulting from the two methods are both clarified and compared. The scattering by a ferrite cylinder coating a dielectric sleeve is also presented. | In traditional CP-OFDM technology exist has two drawbacks,i.e.,the adding of cyclic prefix would result in low spectrum efficiency and it is sensitive to the Doppler frequency shift.This paper principally discusses the issue of pulse shaping filter for GFDM(generalized frequency division multiplex) system.With the suit... | eng_Latn | 13,334 |
Reconfigurable optical inter-channel interference compensation of 20/25-Gbaud QPSK signals using nonlinear wave mixing | A reconfigurable optical inter-channel interference compensation method without channel spacing estimation and relative time delay calibration is proposed for a high density multi-carrier transmission system. Experiments demonstrate the effectiveness for both 20/25-Gbaud dual-carrier QPSK systems with different channel... | Problems associated with the modelling and calculation of quasi-steady-state postfault regimes are considered for abrupt power unbalances. A program permitting calculation of quasi-steady-state postfault regimes with allowance for frequency dynamics and the investigation of their stability is described. Results of calc... | eng_Latn | 13,335 |
Case study: the design of a mixed-signal global positioning system receiver using multichip module packaging | In a collaborative project, the Mayo Foundation and Motorola have developed a fully functional miniaturized global positioning system (GPS) receiver using laminated multichip modules (MCM-L). This paper presents the system requirements, design constraints, substrate selection criteria and description, design approach, ... | This paper addresses the problem of channel and propagation delay estimation in asynchronous DS/CDMA systems. We consider the uplink connection in DS/CDMA with long spreading codes. The MIMO stochastic gradient algorithm proposed in [6] is estimating a linear combination of the channel impulse responses and the propaga... | eng_Latn | 13,336 |
Research on and Design of Wireless Sensor Network Gateway Based on 6LoWPAN | IPv6 is combined with low power consumption wireless personal area network based on IEEE 802.15.4 to build 6LoWPAN network which meets the future development of the internet of things and has far-reaching significance.In this paper,we propose a gateway solution for wireless sensor network based on 6LoWPAN,which can rea... | In this paper, we consider utilizing the space-time codes in the wideband CDMA system. We assume that there are multiple resolvable paths in the frequency selective fading channel. Analytical results show that in addition to spatial diversity, another diversity gain called multipath diversity is achievable. Performance... | eng_Latn | 13,337 |
EFFECT OF ADAPTIVE MODULATION AND ERROR CORRECTION ON MULTI-BAND OFDM-MIMO SYSTEM | We have devised a new system for forming the antenna beam in a com- bined OFDM and MIMO scheme. In this scheme, the OFDM signal is divided among multiple bands, and the divided signals are transmit- ted on an appropriate beam of each sub-band. In this paper, We have described the system configuration of the proposed mu... | We show <-50 dB AM-to-PM conversion over a wide photocurrent range in MUTC photodiodes. By controlling the AM-to-PM coefficient minimum, we generate 15 dBm microwave power with 60 dB AM rejection onto the microwave phase. | yue_Hant | 13,338 |
Thermal throttling using RF diversity | In certain aspects, a method for communications comprises outputting a first portion of a signal to a first one of a plurality of RF modules for transmission, determining a throughput of the first one of the plurality of RF modules during thermal throttling of the first one of the plurality of RF modules, comparing the... | In an earlier paper by the author the problem of determining the optimum symmetrical weighting factors for a video MTI radar was discussed. This paper extends this work so as to remove the symmetrical restriction from the problem. In addition, for a staggered pulse system, optimum times of transmission are determined. ... | eng_Latn | 13,339 |
Full-random hopped-frequency waveform design and processing | For the high frequency radar system,it is difficult to find a clear wideband for operation.In order to obtain a high range resolution,transmitting/receiving waveform with discontinuous frequency bands is proposed.However,spectrum discontinuity of waveform will result in high range sidelobes.The full-random hopped-frequ... | This work describes a method for providing robustness to errors from a binary symmetric channel for the SPIHT image compression. The source rate and channel rate are jointly optimized by a stream of fixed-size channel packets. Punctured turbo codes are used for the channel coding, providing stronger error protection th... | eng_Latn | 13,340 |
Characterization of electroactive Langmuir-Blodgett monolayers of (ferrocenylmethyl)dimethyloctadecylammonium sulfate at gold and air/water interfaces | Des couches monomoleculaires organisees d'hexafluorophosphate de (ferrocenylmethyl) dimethyloctadecylammonium sont transferres via la methode de Langmuir Blodgett sur des electrodes hydrophiles d'or et etudiees | A DFT spread Generalized Multi-Carrier (GMC) based Frequency Division Multiple Access (FDMA) scheme, i.e. DFT-S-GMC, is proposed for uplink transmission of wideband mobile communication systems. The scheme achieves spreading gains in the frequency-domain by Discrete Fourier Transform (DFT), and the Frequency Division M... | eng_Latn | 13,341 |
Using Gauss pseudospectral method to optimize aeroassisted orbit transfer | The Gauss pseudospectral method was used to solve the coplanar aeroassisted orbit transfer from High Earth Orbit to Low Earth Orbit (HEO-LEO). Using above method the optimal solution was obtained by changing the optimal-fuel index to the suitable atmospherical inlet and outlet conditions and taking the shortest flight ... | A high-speed data transmission system based on TMS320C6455 is designed.The input and output interface are separately USB and PCI.The control module is FPGA.The most advantage of the designed system is the powerful signal processing capability,which can be used for the realization of various image processing algorithms.... | eng_Latn | 13,342 |
Improvement of mucosal pathology of the sinuses after exposure to sulfur dioxide by nebulization of S-carboxymethylcysteine. | Since s-carboxymethylcysteine (S-CMC) can directly enhance the ciliary activity in the maxillary sinus mucosa of patients with chronic sinusitis in the absence of significant organic changes of ciliated cells, the nebulization therapy using this medicine might be more effective in the treatment of chronic sinusitis tha... | In this paper, we investigate the performance of the Sub-carrier Multiplexed-Free Space Optics (SCM-FSO) for transmitting Code Division Multiple Access (CDMA) signals in terms of Carrier-to-Noise-plus-Interference Ratio (CNIR) and Bit Error Rate (BER), under Gamma-Gamma turbulent FSO channel. We propose an analytical m... | eng_Latn | 13,343 |
A 400 Gb/s WDM receiver using a low loss silicon nitride AWG integrated with hybrid silicon photodetectors | A heterogeneously integrated WDM receiver based on an AWG demultiplexer and hybrid silicon/InGaAs detectors is presented in a novel platform that combines hybrid silicon components with ultra-low loss silicon nitride waveguides. | A best and efficiently to provide a system and method capable of setting up a resource by the receiving device and the wireless network. A transmitting device several QoS parameters negotiated, signaling to the receiving devices of the session during the session setup procedure. Guaranteed bit rate, maximum bit rate, a... | eng_Latn | 13,344 |
Spectral efficiency improvement techniques for nonlinearly amplified mobile radio systems | A study is reported of 'double-jump' Nyquist channel filters which lead to reduced spectral spreading and an important bit error rate (BER) performance in nonlinearly amplified (NLA) mobile radio systems. In linearly amplified systems the filter retains the intersymbol-interference free properties of Nyquist filters an... | The design of multivariable systems can be approached with many different design objectives. An appealing approach from a mathematical point of view is to describe the dynamics of plant and compensator in state-spaco form, transform the resulting augmented system into a problem involving a system performance index such... | eng_Latn | 13,345 |
A Flexible LDPC Decoder Architecture Supporting TPMP and TDMP Decoding Algorithms | In this paper a programmable and area-efficient decoder architecture supporting two decoding algorithms for Block-LDPC codes is presented. The novel decoder can be configured to decode in either TPMP or TDMP decoding mode according to different Block-LDPC codes, essentially combining the advantages of two decoding algo... | In this article, perspective using of the laser deposition method for manufacture details from the titanium alloy VT20 is considered. Dependence on a structure of the fractional composition is shown. Study of the structure and properties of parts, which were produced by DLD technology using different modes and under di... | kor_Hang | 13,346 |
A broadband 480-GHz passive frequency doubler in 65-nm bulk CMOS with 0.23mW output power | A passive 480-GHz frequency doubler based on accumulation-mode MOS varactor in CMOS process is reported. Using a compact partially-coupled ring structure, the doubler achieves a simultaneous broadband matching for fundamental and 2nd-harmonic signals. With optimized gate length and oxide thickness, the MOS varactor ach... | In this paper an FM detector capable of suppressing the degradation in receiver performance due to the presence of an interfering signal is presented. Optimum receiver structures based on maximum-aposteriori estimation procedures are first derived and then a practical demodulator based on the optimum receivers is exami... | eng_Latn | 13,347 |
Detection of osmium by flame atomic emission spectrometry after extraction as osmium tetroxide into MIBK | Abstract A selective method for the detection of osmium by flame atomic emission spectrometry is described. The method is based on extracting osmium tetroxide into MIBK, at pH 2.1–9.5, and aspirating the extract into a nitrous oxide-acetylene flame. By this procedure the effect of common interferences in atomic emissio... | In this study, the authors propose an optical microwave (MW) radio-over-fibre system in which an integrated dual-parallel Mach-Zehnder modulator (DP-MZM) is biased at the maximum transmission biasing point. A single drive Mach-Zehnder modulator, in series with the DP-MZM, is used to modulate the 1 GHz radio frequency d... | eng_Latn | 13,348 |
Synchronous CDMA technique for fiber-optic LANs with folded dual bus topology | The synchronization in the code-division multiple-access (CDMA) fiber-optic networks reduces interchannel interference, permits larger number of stations, and gives higher throughput. In the star topology proposed, very strict synchronization of transmitters and equalization of propagation delays over various paths in ... | In this paper,property and characteristic of Optim fiber are analysed.By developing of cashmere/Optim blended knitting yarn,it discusses some questions in manufacture practice of recombing,fore spinning and spinning process,and provides some measures to solve these questions.This article discusses the design of the tec... | eng_Latn | 13,349 |
A highly linear SiGe double-balanced mixer for 77 GHz automotive radar applications | An active double-balanced mixer for automotive applications in the 77 GHz range is presented. The circuit includes on-chip baluns both at the RF and the LO port. The mixer was designed and fabricated in a 200 GHz f/sub T/ SiGe:C bipolar technology. The chip was characterized by on-wafer measurements. At 77 GHz, the con... | In this paper, we consider utilizing the space-time codes in the wideband CDMA system. We assume that there are multiple resolvable paths in the frequency selective fading channel. Analytical results show that in addition to spatial diversity, another diversity gain called multipath diversity is achievable. Performance... | eng_Latn | 13,350 |
An efficient decoupling network for microstrip phased array antenna | An efficient decoupling network for microstrip phased array is proposed. It can provide an indirect coupling with controlled magnitude and phase which can be used to cancel the direct coupling caused by space waves and surfaces waves between adjacent elements. Due to the reduced mutual coupling, the simulated active re... | In this paper, we consider utilizing the space-time codes in the wideband CDMA system. We assume that there are multiple resolvable paths in the frequency selective fading channel. Analytical results show that in addition to spatial diversity, another diversity gain called multipath diversity is achievable. Performance... | eng_Latn | 13,351 |
Performance of multi-user MIMO OFDM system with adaptive modulation and coding for wireless communications | As the demand of high quality service in next generation wireless communication systems, a high performance of data transmission requires an increase of spectrum efficiency and an improvement of error performance in wireless communication systems. In this paper, we propose a multi-user multiple-input multiple-output (M... | In the pilot study on the treatment of polyvinyl chloride centrifugal mother liquid wastewater by using a combination of MBR and RO,the removal efficiency of organics and suspending solid together with the capability to resist the impact of the system were researched.The changes of the biological phase in the MBR and t... | eng_Latn | 13,352 |
Performance enhancement of an optical interconnect using short pulses from a modelocked diode laser | Summary form only given. We have demonstrated a short-pulse optical interconnect that uses a practical, high-repetition-rate modelocked source. BER measurements show that operation with short pulses improves system performance by providing a receiver sensitivity enhancement of 3.3 dB. The link has additional benefits r... | In this paper a programmable and area-efficient decoder architecture supporting two decoding algorithms for Block-LDPC codes is presented. The novel decoder can be configured to decode in either TPMP or TDMP decoding mode according to different Block-LDPC codes, essentially combining the advantages of two decoding algo... | eng_Latn | 13,353 |
Adaptive code allocation for interference management on the downlink of DS-CDMA systems | A new technique based on adaptive code-to-user allocation for interference management on the downlink of BPSK based TDD DS-CDMA systems is presented. The principle of the proposed technique is to exploit the dependency of multiple access interference on the instantaneous symbol values of the active users. The objective... | A new approach was proposed for the DOA joint estimation of signal,and the algorithms are based on ESPRIT and two or more array data correlation matrix.It estimated simultaneously the DOA of bis/multistatic.The algorithms estimated parameter are auto paired.The CRLB of the DOA stimation was also derived.The simulating ... | eng_Latn | 13,354 |
Evaluation of the Response of Concurrent High Dose Rate Intracavitary Brachytherapy with External Beam Radiotherapy in Management of Early Stage Carcinoma Cervix | Objectives ::: To evaluate local disease control and early complications of concomitant brachytherapy with external beam-radiotherapy in early stage carcinoma cervix. | As the 3GPP Long Term Evolution (LTE) systems mature and more LTE mobiles become ubiquitous the Random Access Channel (RACH) will experience higher load. Understanding RACH capacity is of high importance for the 4G system planners. Capacity of the LTE RACH was analyzed in the past under the assumption of the ideal rece... | eng_Latn | 13,355 |
Space-time coded wideband CDMA systems | In this paper, we consider utilizing the space-time codes in the wideband CDMA system. We assume that there are multiple resolvable paths in the frequency selective fading channel. Analytical results show that in addition to spatial diversity, another diversity gain called multipath diversity is achievable. Performance... | In this paper, the GMT–PO hybrid method accompanied by the iterative technique is applied successfully to calculate 3-D numerical diffraction coefficients (3-D NDC) of the irregular circular-cylinder edge. The computed RCS of the circular cylinder with 3-D NDC of the irregular edge is in good agreement with the measure... | eng_Latn | 13,356 |
Voice quality of digital wireless networks under fading channel conditions | Telephone calls will increasingly involve a large number of multi-link circuits incorporating a variety of speech coding devices. This paper presents the results of a subjective evaluation which makes the first attempt to estimate voice quality of international connections when different wireless coding methods are use... | This paper studies the mutual interference of wideband and narrowband CDMA in the mobile satellite communication system of narrowband CDMA overlaying on wideband CDMA,then it offers the best spectrum allocation of the two kinds of signals,and we find that the capacity of satellite mobile system will increase dramatical... | eng_Latn | 13,357 |
Apparatus and method for deploying efficient broadcast multicast services in a wireless network, system using the same and message structure therefor | A message transmitted from a mobile station to a base station in a wireless network providing broadcast multicast services includes a quality of service feature associated with multicast data transmissions broadcast from the base station to a plurality of mobile stations to provide real-time feedback to the base statio... | In an earlier paper by the author the problem of determining the optimum symmetrical weighting factors for a video MTI radar was discussed. This paper extends this work so as to remove the symmetrical restriction from the problem. In addition, for a staggered pulse system, optimum times of transmission are determined. ... | eng_Latn | 13,358 |
A method for managing dissolved oxygen concentration during live hauling of channel catfish | After experiencing difficulty in managing dissolved oxygen levels on several live hauls, a method has been developed for estimating the oxygen flow rate needed to sustain live channel catfish Ictalurus punctatus during transport. The mathematical model described in this paper provides aquaculturists, fish farmers, and ... | Abstract Optical wireless communication technologies are finding a greater interest and wider attention within the research community of late. In this paper, we investigate the performance of a free space optical communication system over a generic propagation model called M -distributed channel in the presence of atmo... | eng_Latn | 13,359 |
Nonsteroidal anti-inflammatory drugs can lower amyloidogenic Abeta42 by inhibiting Rho. | A subset of nonsteroidal anti-inflammatory drugs (NSAIDs) has been shown to preferentially reduce the secretion of the highly amyloidogenic, 42-residue amyloid-beta peptide Abeta42. We found that Rho and its effector, Rho-associated kinase, preferentially regulated the amount of Abeta42 produced in vitro and that only ... | The transmission performance of single-sideband alternate mark inversion return-to-zero (SSB-AMI-RZ) formats, with duty-cycles of 15%, 30% and 50%, in long-haul 40 Gbit/s/channel ultra dense WDM systems with 50 GHz of channel spacing is assessed through systematic numerical simulation. After optimizing the bandwidths a... | eng_Latn | 13,360 |
Theoretical and experimental assessment of nonlinearity mitigation through symbol rate optimization | We investigated the reach increase obtained through non-linearity mitigation by means of transmission symbol rate optimization (SRO). First, we did this theoretically and simulatively. We found that for PM-QPSK systems at full-C-band the reach increase may be substantial, on the order of 10%–25%, with optimum symbol ra... | In this paper,node power of compensation method is obtained with two 8 rank matrix.Two line outage load flow is obtained by Newton. Newton load flow for normal state is used,so efficiency and accuracy of line outage analysis are improved. | eng_Latn | 13,361 |
Impact of AWGN Channel on LTE RACH Throughput | As the 3GPP Long Term Evolution (LTE) systems mature and more LTE mobiles become ubiquitous the Random Access Channel (RACH) will experience higher load. Understanding RACH capacity is of high importance for the 4G system planners. Capacity of the LTE RACH was analyzed in the past under the assumption of the ideal rece... | Airborne Radar Network has the advantage over Airborne Single Radar in three aspects. Firstly how does it have the performance of countering stealth airplane and of hiding itself; Secondly how does it shorten the time of detecting object; Lastly how does it improve the recognized precision and positioned precision of o... | eng_Latn | 13,362 |
Calibration-free parallel optical interconnection subsystem implemented by a Gbyte/s-array optical transceiver and a one-chip-link LSI | A Gbyte/s-class optical-interconnection subsystem for a parallel computer was developed and it operated stably in a testbed system of the parallel processing machine RWC-1 (Real World Computer-1). Although it consisted of MMF parallel optical modules, data was transmitted over I km because of the deskew operation of a ... | Abstract The multi-objective optimization of linearized impulsive rendezvous under uncertainty is investigated in this paper. A performance index related to the variances of the terminal state error is defined as the robustness performance index, which is determined by the linear covariance method. The three-objective ... | eng_Latn | 13,363 |
Application of Automatic Binding Release with CAMS Technology in Campus Network Security | To make campus local area network safer,more reliable and more stable,this paper proposes a solution to the problem by combining network switch and server based on an analysis to the potential threats to network security,and a summarization of previous methods about VLAN-partition and binding technology to solve the pr... | We propose a novel machine learning based equalization algorithm for bandwidth-limited IM-DD PON in C-band. 50Gb/s/λ. PAM4 transmission is demonstrated over 20km SSMF using a 10G-class transmitter with 21dB loss budget without amplification. | eng_Latn | 13,364 |
Modulation Schemes and Multiple Access for Impulse Radio | This chapter is dedicated to impulse radio as it is a very prominent form of UWB. Initially, impulse radio (IR) is introduced and generic transceiver architecture for IR is presented. Then, common and custom tailored pulse shapes for impulse radios are discussed. Various IR modulation techniques are presented and their... | We show <-50 dB AM-to-PM conversion over a wide photocurrent range in MUTC photodiodes. By controlling the AM-to-PM coefficient minimum, we generate 15 dBm microwave power with 60 dB AM rejection onto the microwave phase. | eng_Latn | 13,365 |
The performance of LDPC coded frequency hopping system under follower jamming | Follower jamming is a class of jamming way which is very harmful to the frequency hopping system. Low density parity check (LDPC) code is employed in frequency hopping system to combat follower jamming in this paper. The characteristics of follower jamming is introduced firstly, and then the model of LDPC coded FH syst... | A new technique to determine the nonlinearity of high-speed photodiodes is presented. Utilizing a linearized phase-modulated link architecture, we directly measure the photodiode intermodulation distortion. Our results agree with those obtained via a phase-locked laser technique. | eng_Latn | 13,366 |
Dmb receiver and power saving method | The present invention relates to a reduced power consumption of the DMB receiver and a DMB receiver that is based on the Eureka-147 standard method. In particular the present invention with reference to the MCI of the FIC of the transfer frame and extracts the position of the user CU published a service component of th... | We present a preliminary experimental study of the dependence on optical depth of slow and stored light pulses in Rb vapor. In particular, we characterize the efficiency of slow and stored light as a function of Rb density; pulse duration, delay and storage time; and control field intensity. Experimental results are in... | eng_Latn | 13,367 |
Continuous Phase Modulation for Digital Video Broadcasting | In this paper, we study the performance of the Digital Video Broadcasting- Terrestrial (DVB-T) system with Continuous Phase Modulation Orthogonal Frequency Division Multiplexing (CPM-OFDM). The proposed structure combines the advantage of mitigating the Peak-to-Average Power Ratio (PAPR) problem in the Power Amplifier ... | Sony ICX 259AL CCD matrices were irradiated by proton and neutron beams of a synchrocyclotron of the Petersburg Nuclear Physics Institute. The data on production cross sections, as well as the spatial and time distributions of pixels of the irradiated matrices with high dark current, are presented. The experimental dat... | eng_Latn | 13,368 |
OBSTACLE DETECTION SYSTEMS ALONG ROADSIDES USING MILLIMETER-WAVE FM-CW RADAR | This paper describes a millimeter wave obstacle detection system which can be installed along on a roadside environment and has a detection algorithm for minimizing background noise. | The present invention relates to a reduced power consumption of the DMB receiver and a DMB receiver that is based on the Eureka-147 standard method. In particular the present invention with reference to the MCI of the FIC of the transfer frame and extracts the position of the user CU published a service component of th... | yue_Hant | 13,369 |
Muon spin rotation experiments in α-Fe2O3 and Cr2O3 | Abstract The behaviour of the stopped muons in the isostructural antiferromagnetic insulators α-Fe 2 O 3 and Cr 2 O 3 indicate a localized state below 500 K. Local fields and relaxation rates are measured and interpreted. | In this paper, we investigate the performance of the Sub-carrier Multiplexed-Free Space Optics (SCM-FSO) for transmitting Code Division Multiple Access (CDMA) signals in terms of Carrier-to-Noise-plus-Interference Ratio (CNIR) and Bit Error Rate (BER), under Gamma-Gamma turbulent FSO channel. We propose an analytical m... | eng_Latn | 13,370 |
OTSSP167 Abrogates Mitotic Checkpoint through Inhibiting Multiple Mitotic Kinases | OTSSP167 was recently characterized as a potent inhibitor for maternal embryonic leucine zipper kinase (MELK) and is currently tested in Phase I clinical trials for solid tumors that have not responded to other treatment. Here we report that OTSSP167 abrogates the mitotic checkpoint at concentrations used to inhibit ME... | In this study, the authors propose an optical microwave (MW) radio-over-fibre system in which an integrated dual-parallel Mach-Zehnder modulator (DP-MZM) is biased at the maximum transmission biasing point. A single drive Mach-Zehnder modulator, in series with the DP-MZM, is used to modulate the 1 GHz radio frequency d... | eng_Latn | 13,371 |
Proposal of a Hierarchical and Distributed Method for Selecting a Radio Network and a Transmission Mode | The deployment of heterogeneous radio networks and the deployment of Unicast Internet Protocol IP/Multicast IP architectures can impact the quality of services received by the users. The authors think that they will accept these quality variations if they have the possibility to choose the radio network and the transmi... | In this paper, we consider utilizing the space-time codes in the wideband CDMA system. We assume that there are multiple resolvable paths in the frequency selective fading channel. Analytical results show that in addition to spatial diversity, another diversity gain called multipath diversity is achievable. Performance... | eng_Latn | 13,372 |
Development of TMP fibre and pulp quality | The development of TMP quality is considered from the perspective of the long fibre fraction. When refined as a whole pulp, this long fibre both appears to develop in its papermaking performance at a similar rate to, and to form a less well consolidated network than the shorter fibre. As this long fibre is visually dom... | We propose a novel machine learning based equalization algorithm for bandwidth-limited IM-DD PON in C-band. 50Gb/s/λ. PAM4 transmission is demonstrated over 20km SSMF using a 10G-class transmitter with 21dB loss budget without amplification. | eng_Latn | 13,373 |
Novel Low Complexity Pulse-Triggered Flip-Flop for Wireless Baseband Applications | A low complexity dual-mode pulse-triggered FF design for wireless baseband processing is presented in this paper. It supports both single-edge- and double-edge-triggered operations subject to a mode select control. Due to the novelty in pulse generator design, the layout area overhead is only 8% when compared with othe... | This paper introduces the system of digital broadcasting stream,especially notes the scrambling mechanism and the detail principle.Using FPGA as the main chip,and other additional chips,a PCB board has been constructed.It has been tested that the design and the processed data are successful.So this paper has some engin... | eng_Latn | 13,374 |
Optimization of Agar Diffusion Bioassay for Nisin | The four major factors agar, Tween20, culture temperature and pre-diffusion, affecting the agar diffusion bioassay for nisin were studied. The results showed that when agar concentration is 0.75%, the addition of Tween20 0.5%, and the culture temperature 30℃, the accuracy and sensitivity of agar bioassay for nisin can ... | We consider the throughput performance of ARQ in interfering channels, where the signal of interest as well as the interferers are subject to independent distributed Nakagami-m block fading. The key contribution is the derivation of closedform expressions for the rate-maximized throughput. For this purpose, we employ t... | eng_Latn | 13,375 |
DWDM Transmission of OTU3 (43 Gb/s) Data over 7000km of Conventional Non-Zero Dispersion Shifted Fiber | We report DWDM transmission of 50 x 43 Gb/s (ITU-T G.709 OTU3 format) NRZ-DPSK channels over 7000km of conventional NZDSF, using a mixed Raman/EDFA system with 100km/22dB spans and an advanced FEC implemented in the OTU3 frame. | This paper proposes how to choose optimal traceback depth of Viterbi decoder in OFDM systems.The decoder is largely affected by the decoder traceback depth,because the decoder complexity increases exponentially with the decoder traceback depth.There are lots of references which are analyzed theoretically the performanc... | eng_Latn | 13,376 |
The Relationship between Transmission Coefficient and Coupling Loss Factor | During the discussion there was a debate on the relationship between the transmission coefficient and the coupling loss factor. | The paper presents a method for reception, decoding and reconstruction of DVB-T signal for the purpose of using it in passive coherent location (PCL) as a reference. The signal is received using universal COTS components not dedicated for DVB-T, contrary to common television receivers. The proposed algorithm is tested ... | eng_Latn | 13,377 |
Carrier transport in oxygen‐rich polycrystalline‐silicon films | A symmetrical‐Schottky‐barrier (SSB) band model is proposed for the carrier transport in oxygen‐rich polycrystalline‐silicon films. Semiquantitative analyses were made, comparing a one‐dimensional depletion approximation, with voltage and temperature‐dependent current measurements. The band gap is found to be similar t... | Abstract Optical wireless communication technologies are finding a greater interest and wider attention within the research community of late. In this paper, we investigate the performance of a free space optical communication system over a generic propagation model called M -distributed channel in the presence of atmo... | eng_Latn | 13,378 |
A Novel Learning Vector Quantization Inference Classifier | One of the popular tools in pattern recognition is a neuro-fuzzy system. Most of the neuro-fuzzy systems are based on a multi-layer perceptrons. In this paper, we incorporate learning vector quantization in a neuro-fuzzy system. The prototype update equation is based on the learning vector quantization while the gradie... | The design of the LTE physical layer (PHY) is heavily influenced by the requirements for high peak transmission rate (100 Mbps DL/50 Mbps UL), spectral efficiency and multiple channel bandwidths (1.25–20 MHz). Unfortunately, the existing WCDMA turbo interleaver does not permit an efficient high throughput implementatio... | eng_Latn | 13,379 |
Enhanced out-coupling factor of microcavity organic light-emitting devices with irregular microlens array | We studied microcavity organic light-emitting devices with a microlens system. A microcavity for organic light-emitting devices (OLED) was fabricated by stacks of SiO2 and SiNx layers and a metal cathode together with the microlens array. Electroluminescence of the devices showed that color variation under the viewing ... | In this paper, we propose decision feedback equalizer based on LDPC (Low Density Parity Check) code for fast processing and performance improvement. LDPC code has good error correcting ability and performance approaching Shannon capacity. However, it has more long parity check matrix and the number of iteration. In pro... | eng_Latn | 13,380 |
A 900MHz high efficiency and linearity adaptive CMOS power amplifier | A high efficiency, linear, adaptive radio frequency (RF) power amplifier (PA) is presented. The working frequency is about 900MHz. The circuit employs a self-bias cascode for a higher performance and an adaptive bias to enhance linear and efficiency of the PA as well. This power amplifier is designed with the SMIC 0.18... | This paper addresses the problem of channel and propagation delay estimation in asynchronous DS/CDMA systems. We consider the uplink connection in DS/CDMA with long spreading codes. The MIMO stochastic gradient algorithm proposed in [6] is estimating a linear combination of the channel impulse responses and the propaga... | eng_Latn | 13,381 |
Non-Orthogonal Coded Access for Contention-Based Transmission in 5G | The fifth generation (5G) wireless network faces unprecedented massive concurrent random access requests in uplink (UL) contention-based (CB) transmission. In this paper, a non-orthogonal coded access (NOCA) UL transmission in combination with parallel interference cancellation (PIC) based reception scheme at base stat... | Purpose ::: Surveillance after orchiectomy alone has become popular in the management of clinical stage I nonseminomatous germ cell testicular tumors (CSI NSGCTT), and adjuvant chemotherapy has been accepted in high-risk CSI NSGCTT. Because of the late toxicity of standard radiotherapy in CSI testicular seminoma (SGCTT... | eng_Latn | 13,382 |
Over 200 mW Operation of Single-Lateral-Mode 785 nm Laser Diodes with Window-Mirror Structure | The high power operation of the lateral mode stabilized 785nm AlGaAs LD with the window-mirror structure has been demonstrated. The stable lateral mode operation up to 250mW (kink level of 280 mW) is realized. To the best our knowledge, this is the highest power record among the narrow stripe LDs with a wavelength of 7... | This paper introduces the optimal widely linear (WL) minimum variance distorsionless response (MVDR) beamformer for the reception of an unknown signal of interest (SOI) corrupted by potentially second order (SO) noncircular background noise and interference. The SOI, whose waveform is unknown, is assumed to be SO nonci... | yue_Hant | 13,383 |
PE modelling of radiowave propagation over the sea | In order to assist the engineer designing a radar or trying to assess its performance in a marine environment, extremely difficult problem which must be solved is the assessment of the effect of a given meteorological environment, including the sea state, on electromagnetic propagation. The author presents applications... | In this paper a programmable and area-efficient decoder architecture supporting two decoding algorithms for Block-LDPC codes is presented. The novel decoder can be configured to decode in either TPMP or TDMP decoding mode according to different Block-LDPC codes, essentially combining the advantages of two decoding algo... | eng_Latn | 13,384 |
A network for combining radio systems at 4, 6 and 11 kmc | Development of the broadband horn reflector antenna has permitted the simultaneous radiation and reception of radio signals on different frequencies in the three common-carrier bands in which the Bell System has developed radio relay systems. A necessary adjunct to the antenna is a network to combine or separate the co... | The paper provides WiMAX BS (base station) MAC design, implementation discussion with performance analysis based on Intel IXP2350, which include MAC design key issues discussion, base station usage model and architecture, MAC hardware and software high level design and relevant performance analysis. Especially, the WiM... | eng_Latn | 13,385 |
Method for Accessing randomly in Time Division Duplex Mode | PURPOSE: A random access method in a TDD(Time Division Duplex) mode is provided to reduce collisions between users during transmission of UpPTS(Uplink Pilot Time Slot) in the TDD mode having a low speed chip rate, so as to perform a random access by distinguishing a service having a high priority from a service having ... | This paper describes the theoretical basis for a design methodology which enables control of the fundamental tradeoff between speed, dynamic range, and power consumption in switched current cells. The presented methods are applied to the design of a very high dynamic range current memory cell and simulation results are... | yue_Hant | 13,386 |
A DCA-Based Approach for Outage Constrained Robust Secure Power-Splitting SWIPT MISO System | This paper studies the worst-case secrecy rate maximization problem under the total transmit power, the energy harvesting and the outage probability requirements. The problem is nonconvex, thus, hard to solve. Exploiting the special structure of the problem, we first reformulate as a DC (Difference of Convex functions)... | In this paper, we consider utilizing the space-time codes in the wideband CDMA system. We assume that there are multiple resolvable paths in the frequency selective fading channel. Analytical results show that in addition to spatial diversity, another diversity gain called multipath diversity is achievable. Performance... | kor_Hang | 13,387 |
Comparative study on optical fiber communication multiplexing technology | The optical multiplexing technology is a feasible method for improving the capacity of optical fiber communication network by exploiting multiple wavelengths on each fiber used for data transmission independently. With the help of this technology, optical fiber communication network capacity can be greatly improved to ... | Originally published Microwave Opt Technol Lett 53: 751–757, 2011. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53: 1685, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26162 ::: ::: ::: ::: (Original article DOI 10.1002/mop.25828) | eng_Latn | 13,388 |
Mobile Throughput of 802.11b from Moving Vehicle to Roadside Access Point | This paper documents some tests of 802.11b wireless communication technology for vehicle to roadside communication. Data has been collected for a single vehicle communicating with a dedicated roadside antenna. The work is part of a larger effort to benchmark possible throughput of off-the-shelf wireless technologies. T... | This paper discusses the inherent mechanism of adding windows technology and its application in NC-OFDM systems,for two windows and different roll-off factors,the simulation is conducted to compare the performance of the power spectrum out-of-band attenuation of the NC-OFDM signals.The results indicate that the attenua... | eng_Latn | 13,389 |
Demodulation of space frequency coded transmit diversity based on China's digital terrestrial television broadcasting | The receiver performance degradation is a serious problem in time-variant,deep fading channels with high power echoes and long channel delay.A demodulation method for space frequency coded transmit diversity was developed based on the digital television terrestrial multimedia broadcasting(DTMB) system to solve the prob... | Publisher’s Note: This paper, originally published on 12 July 2016, was replaced with a corrected/revised version on 26 July 2016. If you downloaded the original PDF but are unable to access the revision, please contact SPIE Digital Library Customer Service for assistance. ::: ::: We have developed a terahertz time dom... | eng_Latn | 13,390 |
The workflow management based on PDM | Based on a brief account of the PDM,expounded the concept of Workflow Management System in emphases,bring into effect and purpose.According to the Management object of Corporation.And then discussed upon the three function of system even more.Workflow Management is the most important function in PDM process.Developed a... | We have devised a new system for forming the antenna beam in a com- bined OFDM and MIMO scheme. In this scheme, the OFDM signal is divided among multiple bands, and the divided signals are transmit- ted on an appropriate beam of each sub-band. In this paper, We have described the system configuration of the proposed mu... | eng_Latn | 13,391 |
Pulse Shaping Filter and PAPR for GFDM System | In traditional CP-OFDM technology exist has two drawbacks,i.e.,the adding of cyclic prefix would result in low spectrum efficiency and it is sensitive to the Doppler frequency shift.This paper principally discusses the issue of pulse shaping filter for GFDM(generalized frequency division multiplex) system.With the suit... | The flow pulsation in a plane-parallel gear pump with 3-idlers was analyzed,formulae for calculating displacement,average flow velocity,instantaneous flow and pulsation flow were derived.It was pointed out that this sort of gear pump can provide higher flow pulsation frequency when taking teeth number Z=3K±1. | eng_Latn | 13,392 |
Analysis of DC System Grounding Fault and Its Improved Measures in Power Plant | DC system network is widely distributed in power plant, and because some of the work environment is poor, DC system occurs to the phenomenon of insulation reduction easily. The insulation of DC system directly affects the stability and reliability of DC control and signal monitoring circuit, so it is very important to ... | In this paper, a digital down converter (DDC) applied on wide bandwidth digital IF receiver is design and implemented by FPGA. This DDC can translate digital IF signal to baseband, extract desired channel, decimate the sample sequence, multirate converter and channel shape. Using Top-Down design method, the whole DDC f... | eng_Latn | 13,393 |
Phase detection involving parity-check equations and suited to transmissions at low signal to noise ratio | We introduce in this paper a carrier phase detector suited to transmissions at very low signal to noise ratio. Based on the soft decoding of parity check equations, the synchronization scheme proposed here for a QPSK modulation outperforms a classical decision directed algorithm over a Gaussian channel, and is notably ... | Problems associated with the modelling and calculation of quasi-steady-state postfault regimes are considered for abrupt power unbalances. A program permitting calculation of quasi-steady-state postfault regimes with allowance for frequency dynamics and the investigation of their stability is described. Results of calc... | eng_Latn | 13,394 |
A study on adaptive real time video over LTE | LTE, The next generation mobile network system by 3GPP, only allows IP-based transport. Traditional telephony services such as voice and video real-time communication will be provided through the ... | Abstract We report ESR experiments on a LaAl 2 sample doped with 6% Gd. The experiments were performed at 1, 3, 9 and 35 GHz. We find for T ≈ T c essentially a frequency independent shift of H res , but a frequency dependence for the minimum in the linewidth. The results will be discussed in terms of static internal fi... | eng_Latn | 13,395 |
Capacity ofMIMO Propagation Indoor Channel Comparison of Indoor to Indoor and Outdoor to Indoor Radio Link Performances | This paper presents an experimental study of the propagation channel in Indoor environment with two radio link configurations: outdoor to indoor (O2I) and indoor to indoor (I2I). The experimentation has been carried out with a MIMO set-up which allows a full 3D space-time characterization of the channel. The analysis o... | In this paper the determination of transfer functions from inside an Airbus A319 to outside the aircraft in a frequency range from 2 GHz to 8 GHz is presented. Two different aspects have been investigated. The first is the determination of the fuselage attenuation of the aircraft in order to see, if existing airport co... | eng_Latn | 13,396 |
FPGA prototyping of single-polarization 112-Gbit/s optical transceiver for optical multilevel signaling with delay detection | We develop full-rate / fully-functional FPGA-based high-speed optical 16-APSK/QAM transceiver prototype using optical delay-detection for single-polarization 100-Gbit/s/channel short- to mid-range fiber transmission. Four channel WDM (448-Gbit/s) field trial over 18.2-km SMF is also performed. | A novel phasor computation algorithm is presented in this paper. The real and imaginary part filters of this algorithm have identical magnitude frequency characteristic (IMFC) at all the frequencies and orthogonal phase frequency characteristic (PFC) at fundamental frequency. Considering the conditions of the same magn... | eng_Latn | 13,397 |
Design of Antenna Array and Hybrid Receiver in Sidehaul System | Recently, 3rd Generation Partnership Project (3GPP) has developed sidehaul system to cope with the explosively increasing mobile data traffic. The sidehaul system is based on single carrier-frequency division multiple access (SC-FMDA) due to its low peak to average power ratio (PAPR). Also, antenna array is designed to... | timedomainresource allocation withdifferent power allocation methods, e.g., water-filling andequal power Inthis paper, wepresent theadaptive multiuser frequency-allocation. Through simulations we showthat1)system timedomainradioresource allocation modelwhich capacity withthefrequency-time domainresource adaptively allo... | eng_Latn | 13,398 |
Design, simulation and implementation of a self-oscillating control circuit to drive series resonant inverter feeding a brazing induction furnace | This research deals with the design and simulation of induction furnace power source (inverter) using MATLAB package. This source designed to lock on the resonant frequency of the load by using self-oscillating technique, also it has the capability to control the power supplied to the load using phase shift pulse width... | In this paper, we investigate the performance of the Sub-carrier Multiplexed-Free Space Optics (SCM-FSO) for transmitting Code Division Multiple Access (CDMA) signals in terms of Carrier-to-Noise-plus-Interference Ratio (CNIR) and Bit Error Rate (BER), under Gamma-Gamma turbulent FSO channel. We propose an analytical m... | eng_Latn | 13,399 |
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