id stringlengths 9 16 | title stringlengths 4 278 | categories listlengths 1 13 | abstract stringlengths 3 4.08k | filtered_category_membership dict |
|---|---|---|---|---|
1010.1044 | On the Capacity of the $K$-User Cyclic Gaussian Interference Channel | [
"cs.IT",
"math.IT"
] | This paper studies the capacity region of a $K$-user cyclic Gaussian interference channel, where the $k$th user interferes with only the $(k-1)$th user (mod $K$) in the network. Inspired by the work of Etkin, Tse and Wang, who derived a capacity region outer bound for the two-user Gaussian interference channel and prov... | {
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1010.1052 | Mixed integer programming for the resolution of GPS carrier phase
ambiguities | [
"cs.IT",
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"math.IT"
] | This arXiv upload is to clarify that the now well-known sorted QR MIMO decoder was first presented in the 1995 IUGG General Assembly. We clearly go much further in the sense that we directly incorporated reduction into this one step, non-exact suboptimal integer solution. Except for these first few lines up to this poi... | {
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1010.1060 | On the Capacity of Multi-Hop Wireless Networks with Partial Network
Knowledge | [
"cs.IT",
"math.IT"
] | In large wireless networks, acquiring full network state information is typically infeasible. Hence, nodes need to flow the information and manage the interference based on partial information about the network. In this paper, we consider multi-hop wireless networks and assume that each source only knows the channel ga... | {
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1010.1069 | Cooperative Distributed Sequential Spectrum Sensing | [
"cs.IT",
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"stat.AP"
] | We consider cooperative spectrum sensing for cognitive radios. We develop an energy efficient detector with low detection delay using sequential hypothesis testing. Sequential Probability Ratio Test (SPRT) is used at both the local nodes and the fusion center. We also analyse the performance of this algorithm and compa... | {
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1010.1071 | A Novel Algorithm for Cooperative Distributed Sequential Spectrum
Sensing in Cognitive Radio | [
"cs.IT",
"math.IT",
"stat.AP"
] | This paper considers cooperative spectrum sensing in Cognitive Radios. In our previous work we have developed DualSPRT, a distributed algorithm for cooperative spectrum sensing using Sequential Probability Ratio Test (SPRT) at the Cognitive Radios as well as at the fusion center. This algorithm works well, but is not o... | {
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1010.1147 | XML Query Processing and Query Languges: A Survey | [
"cs.DB",
"cs.DS"
] | Today's database is associated with interoperability between different domains and applications. This consequently results in the importance of data portability in database. XML format fits the requirements and it has been increasingly used for serving applications across different domains and purposes. However, queryi... | {
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1010.1149 | Bang--bang trajectories with a double switching time: sufficient strong
local optimality conditions | [
"math.OC",
"cs.SY"
] | This paper gives sufficient conditions for a class of bang-bang extremals with multiple switches to be locally optimal in the strong topology. The conditions are the natural generalizations of the ones considered in previous papers for more specific cases. We require both the strict bang-bang Legendre condition, and th... | {
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1010.1163 | Secrecy Capacity of the Gaussian Wire-Tap Channel with Finite Complex
Constellation Input | [
"cs.IT",
"math.IT"
] | The secrecy capacity of a discrete memoryless Gaussian Wire-Tap Channel when the input is from a finite complex constellation is studied. It is shown that the secrecy capacity curves of a finite constellation plotted against the SNR, for a fixed noise variance of the eavesdropper's channel has a global maximum at an in... | {
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1010.1256 | Entanglement-assisted quantum turbo codes | [
"quant-ph",
"cs.IT",
"math.IT"
] | An unexpected breakdown in the existing theory of quantum serial turbo coding is that a quantum convolutional encoder cannot simultaneously be recursive and non-catastrophic. These properties are essential for quantum turbo code families to have a minimum distance growing with blocklength and for their iterative decodi... | {
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1010.1286 | Exact Hamming Distortion Analysis of Viterbi Encoded Trellis Coded
Quantizers | [
"cs.IT",
"math.IT"
] | Let G be a finite strongly connected aperiodic directed graph in which each edge carries a label from a finite alphabet A. Then G induces a trellis coded quantizer for encoding an alphabet A memoryless source. A source sequence of long finite length is encoded by finding a path in G of that length whose sequence of lab... | {
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1010.1295 | Optimal Packet Scheduling in an Energy Harvesting Communication System | [
"cs.IT",
"cs.NI",
"math.IT"
] | We consider the optimal packet scheduling problem in a single-user energy harvesting wireless communication system. In this system, both the data packets and the harvested energy are modeled to arrive at the source node randomly. Our goal is to adaptively change the transmission rate according to the traffic load and a... | {
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1010.1303 | Error Exponent for Multiple-Access Channels:Lower Bounds | [
"cs.IT",
"math.IT"
] | A unified framework to obtain all known lower bounds (random coding, typical random coding and expurgated bound) on the reliability function of a point-to-point discrete memoryless channel (DMC) is presented. By using a similar idea for a two-user discrete memoryless (DM) multiple-access channel (MAC), three lower boun... | {
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1010.1309 | Probing Capacity | [
"cs.IT",
"math.IT"
] | We consider the problem of optimal probing of states of a channel by transmitter and receiver for maximizing rate of reliable communication. The channel is discrete memoryless (DMC) with i.i.d. states. The encoder takes probing actions dependent on the message. It then uses the state information obtained from probing c... | {
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1010.1317 | Typicality Graphs:Large Deviation Analysis | [
"cs.IT",
"math.IT"
] | Let $\mathcal{X}$ and $\mathcal{Y}$ be finite alphabets and $P_{XY}$ a joint distribution over them, with $P_X$ and $P_Y$ representing the marginals. For any $\epsilon > 0$, the set of $n$-length sequences $x^n$ and $y^n$ that are jointly typical \cite{ckbook} according to $P_{XY}$ can be represented on a bipartite gra... | {
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1010.1322 | A New Upper Bound on the Average Error Exponent for Multiple-Access
Channels | [
"cs.IT",
"math.IT"
] | A new lower bound for the average probability or error for a two-user discrete memoryless (DM) multiple-access channel (MAC) is derived. This bound has a structure very similar to the well-known sphere packing packing bound derived by Haroutunian. However, since explicitly imposes independence of the users' input distr... | {
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1010.1328 | Complejidad descriptiva y computacional en maquinas de Turing pequenas | [
"cs.CC",
"cs.IT",
"math.IT"
] | We start by an introduction to the basic concepts of computability theory and the introduction of the concept of Turing machine and computation universality. Then se turn to the exploration of trade-offs between different measures of complexity, particularly algorithmic (program-size) and computational (time) complexit... | {
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1010.1331 | Improved Combinatorial Algorithms for Wireless Information Flow | [
"cs.IT",
"math.IT"
] | The work of Avestimehr et al. '07 has recently proposed a deterministic model for wireless networks and characterized the unicast capacity C of such networks as the minimum rank of the adjacency matrices describing all possible source-destination cuts. Amaudruz & Fragouli first proposed a polynomial-time algorithm for ... | {
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1010.1358 | Tight exponential analysis of universally composable privacy
amplification and its applications | [
"cs.IT",
"cs.CR",
"math.IT"
] | Motivated by the desirability of universal composability, we analyze in terms of L_1 distinguishability the task of secret key generation from a joint random variable. Under this secrecy criterion, using the Renyi entropy of order 1+s for s in [0,1, we derive a new upper bound of Eve's distinguishability under the appl... | {
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1010.1391 | On the Full Column-Rank Condition of the Channel Estimation Matrix in
Doubly-Selective MIMO-OFDM Systems | [
"cs.IT",
"math.IT"
] | Recently, this journal has published a paper which dealt with basis expansion model (BEM) based least-squares (LS) channel estimation in doubly-selective orthogonal frequency-division multiplexing (DS-OFDM) systems. The least-squares channel estimator computes the pseudo-inverse of a channel estimation matrix. For the ... | {
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1010.1429 | Optimizing Monotone Functions Can Be Difficult | [
"cs.NE"
] | Extending previous analyses on function classes like linear functions, we analyze how the simple (1+1) evolutionary algorithm optimizes pseudo-Boolean functions that are strictly monotone. Contrary to what one would expect, not all of these functions are easy to optimize. The choice of the constant $c$ in the mutation ... | {
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1010.1437 | Mixed-Membership Stochastic Block-Models for Transactional Networks | [
"stat.ML",
"cs.AI",
"cs.SI",
"stat.AP",
"stat.ME"
] | Transactional network data can be thought of as a list of one-to-many communications(e.g., email) between nodes in a social network. Most social network models convert this type of data into binary relations between pairs of nodes. We develop a latent mixed membership model capable of modeling richer forms of transacti... | {
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1010.1438 | Coalition Formation Games for Distributed Cooperation Among Roadside
Units in Vehicular Networks | [
"cs.IT",
"cs.GT",
"cs.SY",
"math.IT"
] | Vehicle-to-roadside (V2R) communications enable vehicular networks to support a wide range of applications for enhancing the efficiency of road transportation. While existing work focused on non-cooperative techniques for V2R communications between vehicles and roadside units (RSUs), this paper investigates novel coope... | {
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1010.1456 | A Hybrid Parallelization of AIM for Multi-Core Clusters: Implementation
Details and Benchmark Results on Ranger | [
"cs.CE",
"cs.MS"
] | This paper presents implementation details and empirical results for a hybrid message passing and shared memory paralleliziation of the adaptive integral method (AIM). AIM is implemented on a (near) petaflop supercomputing cluster of quad-core processors and its accuracy, complexity, and scalability are investigated by... | {
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1010.1496 | Profile Based Sub-Image Search in Image Databases | [
"cs.CV",
"cs.IR",
"cs.MM"
] | Sub-image search with high accuracy in natural images still remains a challenging problem. This paper proposes a new feature vector called profile for a keypoint in a bag of visual words model of an image. The profile of a keypoint captures the spatial geometry of all the other keypoints in an image with respect to its... | {
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1010.1499 | Completely Stale Transmitter Channel State Information is Still Very
Useful | [
"cs.IT",
"math.IT"
] | Transmitter channel state information (CSIT) is crucial for the multiplexing gains offered by advanced interference management techniques such as multiuser MIMO and interference alignment. Such CSIT is usually obtained by feedback from the receivers, but the feedback is subject to delays. The usual approach is to use t... | {
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1010.1508 | Certain Relations between Mutual Information and Fidelity of Statistical
Estimation | [
"stat.AP",
"cs.IT",
"math.IT"
] | I present several new relations between mutual information (MI) and statistical estimation error for a system that can be regarded simultaneously as a communication channel and as an estimator of an input parameter. I first derive a second-order result between MI and Fisher information (FI) that is valid for sufficient... | {
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1010.1514 | Quarantine generated phase transition in epidemic spreading | [
"physics.soc-ph",
"cond-mat.stat-mech",
"cs.SI",
"physics.bio-ph"
] | We study the critical effect of quarantine on the propagation of epidemics on an adaptive network of social contacts. For this purpose, we analyze the susceptible-infected-recovered (SIR) model in the presence of quarantine, where susceptible individuals protect themselves by disconnecting their links to infected neigh... | {
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1010.1523 | Fuzzy overlapping communities in networks | [
"physics.soc-ph",
"cs.SI"
] | Networks commonly exhibit a community structure, whereby groups of vertices are more densely connected to each other than to other vertices. Often these communities overlap, such that each vertex may occur in more than one community. However, two distinct types of overlapping are possible: crisp (where each vertex belo... | {
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1010.1526 | Time Series Classification by Class-Specific Mahalanobis Distance
Measures | [
"cs.LG"
] | To classify time series by nearest neighbors, we need to specify or learn one or several distance measures. We consider variations of the Mahalanobis distance measures which rely on the inverse covariance matrix of the data. Unfortunately --- for time series data --- the covariance matrix has often low rank. To allevia... | {
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1010.1561 | A Clustering Coefficient Network Formation Game | [
"cs.SI",
"cs.DS",
"cs.GT",
"physics.soc-ph"
] | For the most up-to-date version please visit http://www.cis.upenn.edu/~brautbar/ccgame.pdf | {
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1010.1584 | High-SIR Transmission Capacity of Wireless Networks with General Fading
and Node Distribution | [
"cs.IT",
"math.IT"
] | In many wireless systems, interference is the main performance-limiting factor, and is primarily dictated by the locations of concurrent transmitters. In many earlier works, the locations of the transmitters is often modeled as a Poisson point process for analytical tractability. While analytically convenient, the PPP ... | {
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1010.1605 | Communicating Under Channel Uncertainty | [
"cs.IT",
"math.IT"
] | For a single transmit and receive antenna system, a new constellation design is proposed to combat errors in the phase estimate of the channel coefficient. The proposed constellation is a combination of PSK and PAM constellations, where PSK is used to provide protection against phase errors, while PAM is used to increa... | {
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1010.1622 | Manipulating quantum information on the controllable systems or
subspaces | [
"quant-ph",
"cs.SY",
"math.OC"
] | In this paper, we explore how to constructively manipulate qubits by rotating Bloch spheres. It is revealed that three-rotation and one-rotation Hamiltonian controls can be constructed to steer qubits when two tunable Hamiltonian controls are available. It is demonstrated in this research that local-wave function contr... | {
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1010.1646 | Thresholds for epidemic spreading in networks | [
"cond-mat.stat-mech",
"cs.SI",
"physics.soc-ph"
] | We study the threshold of epidemic models in quenched networks with degree distribution given by a power-law. For the susceptible-infected-susceptible (SIS) model the activity threshold lambda_c vanishes in the large size limit on any network whose maximum degree k_max diverges with the system size, at odds with hetero... | {
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1010.1648 | Large-System Analysis of Multiuser Detection with an Unknown Number of
Users: A High-SNR Approach | [
"cs.IT",
"math.IT"
] | We analyze multiuser detection under the assumption that the number of users accessing the channel is unknown by the receiver. In this environment, users' activity must be estimated along with any other parameters such as data, power, and location. Our main goal is to determine the performance loss caused by the need f... | {
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1010.1669 | Rate-Equivocation Optimal Spatially Coupled LDPC Codes for the BEC
Wiretap Channel | [
"cs.IT",
"math.IT"
] | We consider transmission over a wiretap channel where both the main channel and the wiretapper's channel are Binary Erasure Channels (BEC). We use convolutional LDPC ensembles based on the coset encoding scheme. More precisely, we consider regular two edge type convolutional LDPC ensembles. We show that such a construc... | {
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1010.1705 | Rich-club connectivity dominates assortativity and transitivity of
complex networks | [
"physics.soc-ph",
"cs.SI"
] | Rich-club, assortativity and clustering coefficients are frequently-used measures to estimate topological properties of complex networks. Here we find that the connectivity among a very small portion of the richest nodes can dominate the assortativity and clustering coefficients of a large network, which reveals that t... | {
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1010.1746 | Mapping XML Data to Relational Data: A DOM-Based Approach | [
"cs.DB",
"cs.DS"
] | XML has emerged as the standard for representing and exchanging data on the World Wide Web. It is critical to have efficient mechanisms to store and query XML data to exploit the full power of this new technology. Several researchers have proposed to use relational databases to store and query XML data. While several a... | {
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1010.1763 | Algorithms for nonnegative matrix factorization with the beta-divergence | [
"cs.LG"
] | This paper describes algorithms for nonnegative matrix factorization (NMF) with the beta-divergence (beta-NMF). The beta-divergence is a family of cost functions parametrized by a single shape parameter beta that takes the Euclidean distance, the Kullback-Leibler divergence and the Itakura-Saito divergence as special c... | {
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} |
1010.1800 | Proactive Resource Allocation: Turning Predictable Behavior into
Spectral Gain | [
"cs.IT",
"cs.NI",
"cs.SI",
"math.IT"
] | This paper introduces the novel concept of proactive resource allocation in which the predictability of user behavior is exploited to balance the wireless traffic over time, and hence, significantly reduce the bandwidth required to achieve a given blocking/outage probability. We start with a simple model in which the s... | {
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1010.1824 | Implications of Inter-Rater Agreement on a Student Information Retrieval
Evaluation | [
"cs.IR"
] | This paper is about an information retrieval evaluation on three different retrieval-supporting services. All three services were designed to compensate typical problems that arise in metadata-driven Digital Libraries, which are not adequately handled by a simple tf-idf based retrieval. The services are: (1) a co-word ... | {
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1010.1826 | A probabilistic top-down parser for minimalist grammars | [
"cs.CL"
] | This paper describes a probabilistic top-down parser for minimalist grammars. Top-down parsers have the great advantage of having a certain predictive power during the parsing, which takes place in a left-to-right reading of the sentence. Such parsers have already been well-implemented and studied in the case of Contex... | {
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1010.1845 | Navigation in non-uniform density social networks | [
"physics.soc-ph",
"cs.SI"
] | Recent empirical investigations suggest a universal scaling law for the spatial structure of social networks. It is found that the probability density distribution of an individual to have a friend at distance $d$ scales as $P(d)\propto d^{-1}$. Since population density is non-uniform in real social networks, a scale i... | {
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1010.1847 | Restricted Isometries for Partial Random Circulant Matrices | [
"cs.IT",
"math.IT",
"math.PR"
] | In the theory of compressed sensing, restricted isometry analysis has become a standard tool for studying how efficiently a measurement matrix acquires information about sparse and compressible signals. Many recovery algorithms are known to succeed when the restricted isometry constants of the sampling matrix are small... | {
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1010.1862 | Utility Optimal Scheduling in Processing Networks | [
"math.OC",
"cs.SY"
] | We consider the problem of utility optimal scheduling in general \emph{processing networks} with random arrivals and network conditions. These are generalizations of traditional data networks where commodities in one or more queues can be combined to produce new commodities that are delivered to other parts of the netw... | {
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1010.1864 | Transforming complex network to the acyclic one | [
"physics.soc-ph",
"cond-mat.dis-nn",
"cs.SI"
] | Acyclic networks are a class of complex networks in which links are directed and don't have closed loops. Here we present an algorithm for transforming an ordinary undirected complex network into an acyclic one. Further analysis of an acyclic network allows finding structural properties of the network. With our approac... | {
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1010.1865 | Corrections to "Unified Laguerre polynomial-series-based distribution of
small-scale fading envelopes'' | [
"math.PR",
"cs.IT",
"math.IT"
] | In this correspondence, we point out two typographical errors in Chai and Tjhung's paper and we offer the correct formula of the unified Laguerre polynomial-series-based cumulative distribution function (cdf) for small-scale fading distributions. A Laguerre polynomial-series-based cdf formula for non-central chi-square... | {
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1010.1866 | Fast error-tolerant quartet phylogeny algorithms | [
"q-bio.PE",
"cs.CE",
"cs.DS"
] | We present an algorithm for phylogenetic reconstruction using quartets that returns the correct topology for $n$ taxa in $O(n \log n)$ time with high probability, in a probabilistic model where a quartet is not consistent with the true topology of the tree with constant probability, independent of other quartets. Our i... | {
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1010.1886 | Inner Product Spaces for MinSum Coordination Mechanisms | [
"cs.GT",
"cs.DS",
"cs.MA"
] | We study policies aiming to minimize the weighted sum of completion times of jobs in the context of coordination mechanisms for selfish scheduling problems. Our goal is to design local policies that achieve a good price of anarchy in the resulting equilibria for unrelated machine scheduling. To obtain the approximation... | {
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1010.1888 | Multi-Objective Genetic Programming Projection Pursuit for Exploratory
Data Modeling | [
"cs.LG",
"cs.NE"
] | For classification problems, feature extraction is a crucial process which aims to find a suitable data representation that increases the performance of the machine learning algorithm. According to the curse of dimensionality theorem, the number of samples needed for a classification task increases exponentially as the... | {
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1010.1899 | The Failure Probability at Sink Node of Random Linear Network Coding | [
"cs.IT",
"math.IT"
] | In practice, since many communication networks are huge in scale or complicated in structure even dynamic, the predesigned network codes based on the network topology is impossible even if the topological structure is known. Therefore, random linear network coding was proposed as an acceptable coding technique. In this... | {
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1010.1904 | Weighted Indices for Evaluating the Quality of Research with Multiple
Authorship | [
"cs.IR",
"cs.CY",
"cs.DL"
] | Devising an index to measure the quality of research is a challenging task. In this paper, we propose a set of indices to evaluate the quality of research produced by an author. Our indices utilize a policy that assigns the weights to multiple authors of a paper. We have considered two weight assignment policies: posit... | {
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1010.1911 | On a Low-Rate TLDPC Code Ensemble and the Necessary Condition on the
Linear Minimum Distance for Sparse-Graph Codes | [
"cs.IT",
"math.IT"
] | This paper addresses the issue of design of low-rate sparse-graph codes with linear minimum distance in the blocklength. First, we define a necessary condition which needs to be satisfied when the linear minimum distance is to be ensured. The condition is formulated in terms of degree-1 and degree-2 variable nodes and ... | {
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1010.1953 | Passive Supporters of Terrorism and Phase Transitions | [
"physics.soc-ph",
"cs.SI"
] | We discuss some social contagion processes to describe the formation and spread of radical opinions. The dynamics of opinion spread involves local threshold processes as well as mean field effects. We calculate and observe phase transitions in the dynamical variables resulting in a rapidly increasing number of passive ... | {
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1010.1973 | For the Grid and Through the Grid: The Role of Power Line Communications
in the Smart Grid | [
"cs.NI",
"cs.IT",
"cs.SY",
"math.IT"
] | Is Power Line Communications (PLC) a good candidate for Smart Grid applications? The objective of this paper is to address this important question. To do so we provide an overview of what PLC can deliver today by surveying its history and describing the most recent technological advances in the area. We then address Sm... | {
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1010.1985 | Relay Strategies Based on Cross-Determinism for the Broadcast Relay
Channel | [
"cs.IT",
"math.IT"
] | We consider a two-user Gaussian multiple-input multiple-output (MIMO) broadcast channel with a common multiple-antenna relay, and a shared digital (noiseless) link between the relay and the two destinations. For this channel, this paper introduces an asymptotically sum-capacity-achieving quantize-and-forward (QF) relay... | {
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1010.2030 | Weight Distributions of Regular Low-Density Parity-Check Codes over
Finite Fields | [
"cs.IT",
"math.IT"
] | The average weight distribution of a regular low-density parity-check (LDPC) code ensemble over a finite field is thoroughly analyzed. In particular, a precise asymptotic approximation of the average weight distribution is derived for the small-weight case, and a series of fundamental qualitative properties of the asym... | {
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1010.2067 | Algorithmic Thermodynamics | [
"math-ph",
"cs.IT",
"math.IT",
"math.MP",
"quant-ph"
] | Algorithmic entropy can be seen as a special case of entropy as studied in statistical mechanics. This viewpoint allows us to apply many techniques developed for use in thermodynamics to the subject of algorithmic information theory. In particular, suppose we fix a universal prefix-free Turing machine and let X be the ... | {
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1010.2102 | Hierarchical Multiclass Decompositions with Application to Authorship
Determination | [
"cs.AI"
] | This paper is mainly concerned with the question of how to decompose multiclass classification problems into binary subproblems. We extend known Jensen-Shannon bounds on the Bayes risk of binary problems to hierarchical multiclass problems and use these bounds to develop a heuristic procedure for constructing hierarchi... | {
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1010.2128 | Parameter Selection in Periodic Nonuniform Sampling of Multiband Signals | [
"cs.SY"
] | Periodic nonuniform sampling has been considered in literature as an effective approach to reduce the sampling rate far below the Nyquist rate for sparse spectrum multiband signals. In the presence of non-ideality the sampling parameters play an important role on the quality of reconstructed signal. Also the average sa... | {
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1010.2141 | Modeling the evolution of continuously-observed networks: Communication
in a Facebook-like community | [
"physics.soc-ph",
"cs.SI"
] | Building on existing stochastic actor-oriented models for panel data, we employ a conditional logistic framework to explore growth mechanisms for tie creation in continuously-observed networks. This framework models the likelihood of tie formation distinguishing it from hazard models that consider time to tie formation... | {
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1010.2148 | Ontological Matchmaking in Recommender Systems | [
"cs.DB"
] | The electronic marketplace offers great potential for the recommendation of supplies. In the so called recommender systems, it is crucial to apply matchmaking strategies that faithfully satisfy the predicates specified in the demand, and take into account as much as possible the user preferences. We focus on real-life ... | {
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1010.2157 | A Wideband Spectrum Sensing Method for Cognitive Radio using Sub-Nyquist
Sampling | [
"cs.IT",
"math.IT"
] | Spectrum sensing is a fundamental component in cognitive radio. A major challenge in this area is the requirement of a high sampling rate in the sensing of a wideband signal. In this paper a wideband spectrum sensing model is presented that utilizes a sub-Nyquist sampling scheme to bring substantial savings in terms of... | {
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1010.2158 | Non-uniform sampling and reconstruction of multi-band signals and its
application in wideband spectrum sensing of cognitive radio | [
"cs.IT",
"math.IT"
] | Sampling theories lie at the heart of signal processing devices and communication systems. To accommodate high operating rates while retaining low computational cost, efficient analog-to digital (ADC) converters must be developed. Many of limitations encountered in current converters are due to a traditional assumption... | {
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1010.2160 | Robustness of interdependent networks under targeted attack | [
"physics.soc-ph",
"cs.SI",
"physics.data-an"
] | When an initial failure of nodes occurs in interdependent networks, a cascade of failure between the networks occurs. Earlier studies focused on random initial failures. Here we study the robustness of interdependent networks under targeted attack on high or low degree nodes. We introduce a general technique and show t... | {
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1010.2173 | Complex network model of the phase transition on the wealth
distributions - from Pareto to the society without middle class | [
"physics.soc-ph",
"cond-mat.dis-nn",
"cs.SI"
] | A model of distribution of the wealth in a society based on the properties of complex networks has been proposed. The wealth is interpreted as a consequence of communication possibilities and proportional to the number of connections possessed by a person (as a vertex of the social network). Numerical simulation of wea... | {
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1010.2186 | On Opinion Dynamics in Heterogeneous Networks | [
"math-ph",
"cs.SI",
"math.MP",
"physics.soc-ph"
] | This paper studies the opinion dynamics model recently introduced by Hegselmann and Krause: each agent in a group maintains a real number describing its opinion; and each agent updates its opinion by averaging all other opinions that are within some given confidence range. The confidence ranges are distinct for each ag... | {
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1010.2198 | Nearness to Local Subspace Algorithm for Subspace and Motion
Segmentation | [
"cs.IT",
"math.IT"
] | There is a growing interest in computer science, engineering, and mathematics for modeling signals in terms of union of subspaces and manifolds. Subspace segmentation and clustering of high dimensional data drawn from a union of subspaces are especially important with many practical applications in computer vision, ima... | {
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1010.2236 | On the Scaling Law for Compressive Sensing and its Applications | [
"cs.IT",
"math.IT"
] | $\ell_1$ minimization can be used to recover sufficiently sparse unknown signals from compressed linear measurements. In fact, exact thresholds on the sparsity (the size of the support set), under which with high probability a sparse signal can be recovered from i.i.d. Gaussian measurements, have been computed and are ... | {
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1010.2247 | Regions of Attraction for Hybrid Limit Cycles of Walking Robots | [
"math.OC",
"cs.RO",
"cs.SY"
] | This paper illustrates the application of recent research in region-of-attraction analysis for nonlinear hybrid limit cycles. Three example systems are analyzed in detail: the van der Pol oscillator, the "rimless wheel", and the "compass gait", the latter two being simplified models of underactuated walking robots. The... | {
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1010.2285 | Information-based complexity, feedback and dynamics in convex
programming | [
"cs.IT",
"cs.SY",
"math.IT",
"math.OC"
] | We study the intrinsic limitations of sequential convex optimization through the lens of feedback information theory. In the oracle model of optimization, an algorithm queries an {\em oracle} for noisy information about the unknown objective function, and the goal is to (approximately) minimize every function in a give... | {
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1010.2286 | Divergence-based characterization of fundamental limitations of adaptive
dynamical systems | [
"cs.IT",
"math.IT",
"math.OC"
] | Adaptive dynamical systems arise in a multitude of contexts, e.g., optimization, control, communications, signal processing, and machine learning. A precise characterization of their fundamental limitations is therefore of paramount importance. In this paper, we consider the general problem of adaptively controlling an... | {
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1010.2345 | Using Context Dependent Semantic Similarity to Browse Information
Resources: an Application for the Industrial Design | [
"cs.DL",
"cs.IR"
] | This paper deals with the semantic interpretation of information resources (e.g., images, videos, 3D models). We present a case study of an approach based on semantic and context dependent similarity applied to the industrial design. Different application contexts are considered and modelled to browse a repository of 3... | {
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1010.2358 | On Finding Frequent Patterns in Event Sequences | [
"cs.DS",
"cs.DB"
] | Given a directed acyclic graph with labeled vertices, we consider the problem of finding the most common label sequences ("traces") among all paths in the graph (of some maximum length m). Since the number of paths can be huge, we propose novel algorithms whose time complexity depends only on the size of the graph, and... | {
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1010.2371 | On Finding Similar Items in a Stream of Transactions | [
"cs.DS",
"cs.DB"
] | While there has been a lot of work on finding frequent itemsets in transaction data streams, none of these solve the problem of finding similar pairs according to standard similarity measures. This paper is a first attempt at dealing with this, arguably more important, problem. We start out with a negative result that ... | {
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1010.2382 | Capacity Achieving Modulation for Fixed Constellations with Average
Power Constraint | [
"cs.IT",
"math.IT"
] | The capacity achieving probability mass function (PMF) of a finite signal constellation with an average power constraint is in most cases non-uniform. A common approach to generate non-uniform input PMFs is Huffman shaping, which consists of first approximating the capacity achieving PMF by a sampled Gaussian density a... | {
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1010.2384 | Learning Taxonomy for Text Segmentation by Formal Concept Analysis | [
"cs.CL"
] | In this paper the problems of deriving a taxonomy from a text and concept-oriented text segmentation are approached. Formal Concept Analysis (FCA) method is applied to solve both of these linguistic problems. The proposed segmentation method offers a conceptual view for text segmentation, using a context-driven cluster... | {
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1010.2433 | Capacity of 1-to-K Broadcast Packet Erasure Channels with Channel Output
Feedback | [
"cs.IT",
"math.IT"
] | This paper focuses on the 1-to-K broadcast packet erasure channel (PEC), which is a generalization of the broadcast binary erasure channel from the binary symbol to that of arbitrary finite fields GF(q) with sufficiently large q. We consider the setting in which the source node has instant feedback of the channel outpu... | {
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1010.2436 | Capacity of 1-to-K Broadcast Packet Erasure Channels with Channel Output
Feedback (Full Version) | [
"cs.IT",
"math.IT"
] | This paper focuses on the 1-to-K broadcast packet erasure channel (PEC), which is a generalization of the broadcast binary erasure channel from the binary symbol to that of arbitrary finite fields GF(q) with sufficiently large q. We consider the setting in which the source node has instant feedback of the channel outpu... | {
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1010.2437 | On Achievable Rates of the Two-user Symmetric Gaussian Interference
Channel | [
"cs.IT",
"math.IT"
] | We study the Han-Kobayashi (HK) achievable sum rate for the two-user symmetric Gaussian interference channel. We find the optimal power split ratio between the common and private messages (assuming no time-sharing), and derive a closed form expression for the corresponding sum rate. This provides a finer understanding ... | {
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1010.2438 | On Designing Multicore-aware Simulators for Biological Systems | [
"cs.DC",
"cs.CE",
"q-bio.QM"
] | The stochastic simulation of biological systems is an increasingly popular technique in bioinformatics. It often is an enlightening technique, which may however result in being computational expensive. We discuss the main opportunities to speed it up on multi-core platforms, which pose new challenges for parallelisatio... | {
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1010.2439 | Conservation Law of Utility and Equilibria in Non-Zero Sum Games | [
"cs.GT",
"cs.AI",
"math.OC"
] | This short note demonstrates how one can define a transformation of a non-zero sum game into a zero sum, so that the optimal mixed strategy achieving equilibrium always exists. The transformation is equivalent to introduction of a passive player into a game (a player with a singleton set of pure strategies), whose payo... | {
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1010.2440 | Enabling Data Discovery through Virtual Internet Repositories | [
"cs.DL",
"cs.IR"
] | Mercury is a federated metadata harvesting, search and retrieval tool based on both open source and software developed at Oak Ridge National Laboratory. It was originally developed for NASA, and the Mercury development consortium now includes funding from NASA, USGS, and DOE. A major new version of Mercury was develope... | {
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1010.2441 | Note on Noisy Group Testing: Asymptotic Bounds and Belief Propagation
Reconstruction | [
"cs.IT",
"math.IT"
] | An information theoretic perspective on group testing problems has recently been proposed by Atia and Saligrama, in order to characterise the optimal number of tests. Their results hold in the noiseless case, where only false positives occur, and where only false negatives occur. We extend their results to a model cont... | {
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1010.2457 | Optimal designs for Lasso and Dantzig selector using Expander Codes | [
"math.ST",
"cs.IT",
"math.IT",
"math.PR",
"stat.ME",
"stat.ML",
"stat.TH"
] | We investigate the high-dimensional regression problem using adjacency matrices of unbalanced expander graphs. In this frame, we prove that the $\ell_{2}$-prediction error and the $\ell_{1}$-risk of the lasso and the Dantzig selector are optimal up to an explicit multiplicative constant. Thus we can estimate a high-dim... | {
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1010.2460 | Line graphs as social networks | [
"physics.soc-ph",
"cs.SI",
"physics.data-an"
] | The line graphs are clustered and assortative. They share these topological features with some social networks. We argue that this similarity reveals the cliquey character of the social networks. In the model proposed here, a social network is the line graph of an initial network of families, communities, interest grou... | {
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1010.2521 | Cooperation, Norms, and Revolutions: A Unified Game-Theoretical Approach | [
"physics.soc-ph",
"cs.SI"
] | Cooperation is of utmost importance to society as a whole, but is often challenged by individual self-interests. While game theory has studied this problem extensively, there is little work on interactions within and across groups with different preferences or beliefs. Yet, people from different social or cultural back... | {
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1010.2551 | Fractional Repetition Codes for Repair in Distributed Storage Systems | [
"cs.IT",
"math.IT"
] | We introduce a new class of exact Minimum-Bandwidth Regenerating (MBR) codes for distributed storage systems, characterized by a low-complexity uncoded repair process that can tolerate multiple node failures. These codes consist of the concatenation of two components: an outer MDS code followed by an inner repetition c... | {
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1010.2571 | Cooperative Precoding with Limited Feedback for MIMO Interference
Channels | [
"cs.IT",
"math.IT"
] | Multi-antenna precoding effectively mitigates the interference in wireless networks. However, the resultant performance gains can be significantly compromised in practice if the precoder design fails to account for the inaccuracy in the channel state information (CSI) feedback. This paper addresses this issue by consid... | {
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1010.2572 | Empirical study on some interconnecting bilayer networks | [
"physics.soc-ph",
"cs.SI"
] | This manuscript serves as an online supplement of a preprint, which presents a study on a kind of bilayer networks where some nodes (called interconnecting nodes) in two layers merge. A model showing an important general property of the bilayer networks is proposed. Then the analytic discussion of the model is compared... | {
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} |
1010.2595 | Kolmogorov Complexity in perspective. Part II: Classification,
Information Processing and Duality | [
"cs.LO",
"cs.CC",
"cs.IT",
"math.IT",
"physics.data-an"
] | We survey diverse approaches to the notion of information: from Shannon entropy to Kolmogorov complexity. Two of the main applications of Kolmogorov complexity are presented: randomness and classification. The survey is divided in two parts published in a same volume. Part II is dedicated to the relation between logic ... | {
"Other": 1,
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"cs.SD": 0,
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"cs.SY": 0
} |
1010.2619 | Graph-theoretical Constructions for Graph Entropy and Network Coding
Based Communications | [
"cs.IT",
"cs.NI",
"math.CO",
"math.IT"
] | The guessing number of a directed graph (digraph), equivalent to the entropy of that digraph, was introduced as a direct criterion on the solvability of a network coding instance. This paper makes two contributions on the guessing number. First, we introduce an undirected graph on all possible configurations of the dig... | {
"Other": 1,
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} |
1010.2656 | Indexing Finite Language Representation of Population Genotypes | [
"cs.DS",
"cs.CE",
"q-bio.QM"
] | With the recent advances in DNA sequencing, it is now possible to have complete genomes of individuals sequenced and assembled. This rich and focused genotype information can be used to do different population-wide studies, now first time directly on whole genome level. We propose a way to index population genotype inf... | {
"Other": 1,
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} |
1010.2667 | Virtual Full-Duplex Wireless Communication via Rapid On-Off-Division
Duplex | [
"cs.IT",
"cs.NI",
"math.IT"
] | This paper introduces a novel paradigm for design- ing the physical and medium access control (MAC) layers of mobile ad hoc or peer-to-peer networks formed by half-duplex radios. A node equipped with such a radio cannot simultaneously transmit and receive useful signals at the same frequency. Unlike in conventional des... | {
"Other": 1,
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"cs.SY": 0
} |
1010.2686 | How to Achieve the Optimal DMT of Selective Fading MIMO Channels? | [
"cs.IT",
"math.IT"
] | In this paper, we consider a particular class of selective fading channel corresponding to a channel that is selective either in time or in frequency. For this class of channel, we propose a systematic way to achieve the optimal DMT derived in Coronel and B\"olcskei, IEEE ISIT, 2007 by extending the non-vanishing deter... | {
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"cs.SD": 0,
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"cs.SY": 0
} |
1010.2692 | Resource Allocation via Sum-Rate Maximization in the Uplink of
Multi-Cell OFDMA Networks | [
"math.OC",
"cs.IT",
"math.IT"
] | In this paper, we consider maximizing the sum-rate in the uplink of a multi-cell OFDMA network. The problem has a non-convex combinatorial structure and is known to be NP hard. Due to the inherent complexity of implementing the optimal solution, firstly, we derive an upper and lower bound to the optimal average network... | {
"Other": 0,
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"cs.SD": 0,
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"cs.SY": 0
} |
1010.2731 | A Unified Framework for High-Dimensional Analysis of M-Estimators with
Decomposable Regularizers | [
"math.ST",
"cs.IT",
"math.IT",
"stat.ME",
"stat.TH"
] | High-dimensional statistical inference deals with models in which the the number of parameters p is comparable to or larger than the sample size n. Since it is usually impossible to obtain consistent procedures unless $p/n\rightarrow0$, a line of recent work has studied models with various types of low-dimensional stru... | {
"Other": 0,
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"cs.NE": 0,
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"cs.SD": 0,
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"cs.SY": 0
} |
1010.2733 | Combinatorial Continuous Maximal Flows | [
"cs.CV",
"math.OC"
] | Maximum flow (and minimum cut) algorithms have had a strong impact on computer vision. In particular, graph cuts algorithms provide a mechanism for the discrete optimization of an energy functional which has been used in a variety of applications such as image segmentation, stereo, image stitching and texture synthesis... | {
"Other": 0,
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"cs.SY": 0
} |
1010.2741 | MIMO Interference Alignment Over Correlated Channels with Imperfect CSI | [
"cs.IT",
"math.IT"
] | Interference alignment (IA), given uncorrelated channel components and perfect channel state information, obtains the maximum degrees of freedom in an interference channel. Little is known, however, about how the sum rate of IA behaves at finite transmit power, with imperfect channel state information, or antenna corre... | {
"Other": 0,
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} |
1010.2787 | Interference Alignment with Analog Channel State Feedback | [
"cs.IT",
"math.IT"
] | Interference alignment (IA) is a multiplexing gain optimal transmission strategy for the interference channel. While the achieved sum rate with IA is much higher than previously thought possible, the improvement often comes at the cost of requiring network channel state information at the transmitters. This can be achi... | {
"Other": 0,
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"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
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