hash stringlengths 32 32 | doc_id stringlengths 5 12 | section stringlengths 5 1.47k | content stringlengths 0 6.67M |
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1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.4.5.5 Test requirements | In all measurements made according to subclause 8.4.5.4.2, the BER shall not exceed 0,001. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.4.5.6 Explanation difference | Because the chip rate of the wanted signal is 1.28 Mcps, the type of the interfering signal is either equivalent to a continuous narrow band CDMA signal with one code of chip frequency 1.28 Mchip/s. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.4.6 Intermodulation characteristics | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.4.6.1 Definition and applicability | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.4.6.2 Conformance requirements | The static reference performance as specified in clause 8.4.2 of TR 25.945 should be met when the following signals are coupled to the BS antenna input.
A wanted signal at the assigned channel frequency, 6 dB above the static reference level.
Two interfering signals with the parameters specified in following table.
Tab... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.4.6.3 Test purpose | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.4.6.4 Method of test | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.4.6.4.1 Initial conditions | 1) Common with 3.84 Mcps chip rate TDD option.
2) Common with 3.84 Mcps chip rate TDD option.
3) Start transmission from the BS tester to the BS using the UL reference measurement channel (12.2 kbps) defined in Annex 8.A.2 of TR 25.945 The level of the UE simulator signal measured at the BS antenna connector shall be s... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.4.6.4.2 Procedure | 1) The frequency of the first and the second signal generator shall be set to 3,2 MHz and 6,4 MHz, respectively, above the assigned channel frequency of the wanted signal.
2) Measure the BER of the wanted signal at the BS receiver.
3) The frequency of the first and the second signal generator shall be set to 3,2 MHz an... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.4.6.5 Test requirements | The BER measured according subclause 8.4.6.4.2 to shall not exceed 0,001. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.4.6.6 Explanation difference | Because the bandwidth of 1.28 Mcps TDD is 1,6MHz, the frequency offsets of first and second interference signal should be 3,2MHz and 6,4MHz respectively. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.4.7 Spurious emissions | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.4.7.1 Definition and applicability | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.4.7.2 Conformance requirements | The power of any spurious emission shall not exceed the values given in table in section 6.3.7 of TR 25.945 |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.4.7.3 Test requirements | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.4.7.4 Method of test | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.4.7.4.1 Initial conditions | 1) Common with the 3.84 Mcps chip rate
2) Common with the 3.84 Mcps chip rate
3) Common with the 3.84 Mcps chip rate
4) Set the BS to transmit a signal with parameters according to following table.
5) Common with the 3.84 Mcps chip rate
Table 8.16: Parameters of the transmitted signal for Rx spurious emissions test
Par... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.4.7.4.2 Procedure | 1) Measure the power of the spurious emissions by applying the measuring equipment with the settings as specified in following table. The characteristics of the measurement filter with the bandwidth 1.28 MHz shall be RRC with roll-off = 0,22. The characteristics of the measurement filters with bandwidths 100 kHz and ... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.4.7.5 Test requirements | The spurious emissions measured according to subclause 8.4.7.4.2 shall not exceed the limits specified in subclause 8.4.7.2. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.4.7.6 Explanation difference | For the 1.28 Mcps chip rate TDD option, one frame(10ms) consists of two subframes(5ms), and one subframe consists of 7 timeslots, the structure of subframe is shown in section 7.2.1 of TR 25.928. So the number of timeslot i should be 0, 1,…,6. In addition, for the 1.28 Mcps chip rate TDD option, the DL reference measur... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5 Performance requirements | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.1 General | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.2 Demodulation in static propagation conditions | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.2.1 Demodulation of DCH | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.2.1.1 Definition and applicability | Common with 3.84 Mcps TDD. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.2.1.2 Conformance requirements | For the parameters specified in table 8.18, the BLER should not exceed the piece-wise linear BLER curve specified in table 8.19.
Table 8.18: Parameters in static propagation conditions for 1.28 Mcps TDD option
Parameters
Unit
Test 1
Test 2
Test 3
Test 4
Number of DPCHo
4
1
1
0
Spread factor of DPCHo
8
8
8
dB
-7
-7
-7
–... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.2.1.3 Test purpose | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.2.1.4 Method of test | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.2.1.4.1 Initial conditions | Connect the BS tester (UE simulator) generating the wanted signal and a set of interference generators to both BS antenna connectors for diversity reception via a combining network. The set of interference generators comprises a number of CDMA generators, each representing an individual intracell interferer (subsequent... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.2.1.4.2 Procedure | 1) Adjust the power of the band-limited white noise source in such a way that its power spectral density measured at the BS antenna connector takes on the value Ioc as specified in table 8.18.
2) For a given test defined by the information data rate and the BLER objective, set the power of each DPCH0 measured at the BS... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.2.1.5 Test requirements | The BLER measured according to subclause 8.5.2.1.4.2 shall not exceed the limits specified in table 8.19. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.2.1.6 Explanation difference | For the 1.28 Mcps chip rate TDD option, one frame(10ms) consists of two subframes(5ms), and one subframe consists of 7 timeslots, (the structure of subframe is shown in TR 25.928). Considering the chip rate, the burst structure of 1.28 Mcps TDD for normal traffic is different from that of 3.84 Mcps TDD option, (the bur... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3 Demodulation of DCH in multipath fading conditions | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.1 Multipath fading Case 1 | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.1.1 Definition and applicability | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.1.2 Conformance requirements | For the parameters specified in table 8.21, the BLER should not exceed the piece-wise linear BLER curve specified in table 8.22.
Table 8.21: Parameters multipath Case 1 channel for 1.28 Mcps TDD option
Parameters
Unit
Test 1
Test 2
Test 3
Test 4
Number of DPCHo
4
1
1
0
Spread factor of DPCHo
8
8
8
dB
-7
-7
-7
–
Ioc
dBm... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.1.3 Test purpose | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.1.4 Method of test | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.1.4.1 Initial conditions | 1) Connect the BS tester (UE simulator) generating the wanted signal and a set of interference generators to both BS antenna connectors for diversity reception via a combining network. The set of interference generators comprises a number of CDMA generators, each representing an individual intracell interferer (subsequ... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.1.4.2 Procedure | 1) Adjust the power of the band-limited white noise source in such a way that its power spectral density measured at the BS antenna connector takes on the value Ioc as specified in table 8.21.
2) For a given test defined by the information data rate and the BLER objective, set the power of each DPCH0 measured at the BS... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.1.5 Test requirements | The BLER measured according to subclause 8.5.3.1.4.2 shall not exceed the limits specified in table 8.22. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.1.6 Explanation difference | For the 1.28 Mcps chip rate TDD option, one frame(10ms) consists of two subframes(5ms), and one subframe consists of 7 timeslots, (the structure of subframe is shown in TR 25.928). Considering the chip rate, the burst structure of 1.28 Mcps TDD for normal traffic is different from that of 3.84 Mcps TDD option, (the bur... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.2 Multipath fading Case 2 | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.2.1 Definition and applicabily | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.2.2 Conformance requirements | For the parameters specified in table 8.24, the BLER should not exceed the piece-wise linear BLER curve specified in table 8.25.
Table 8.24: Parameters multipath Case 2 channel for 1.28 Mcps TDD option
Parameters
Unit
Test 1
Test 2
Test 3
Test 4
Number of DPCHo
4
1
1
0
Spread factor of DPCHo
8
8
8
dB
-7
-7
-7
–
Ioc
dBm... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.2.3 Test purpose | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.2.4 Method of test | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.2.4.1 Initial conditions | 1) Connect the BS tester (UE simulator) generating the wanted signal and a set of interference generators to both BS antenna connectors for diversity reception via a combining network. The set of interference generators comprises a number of CDMA generators, each representing an individual intracell interferer (subsequ... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.2.4.2 Procedure | 1) Adjust the power of the band-limited white noise source in such a way that its power spectral density measured at the BS antenna connector takes on the value Ioc as specified in table 8.24.
2) For a given test defined by the information data rate and the BLER objective, set the power of each DPCH0 measured at the BS... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.2.5 Test requirements | The BLER measured according to subclause 8.5.3.2.4.2 shall not exceed the limits specified in table 8.25. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.2.6 Explanation difference | For the 1.28 Mcps chip rate TDD option, one frame(10ms) consists of two subframes(5ms), and one subframe consists of 7 timeslots, (the structure of subframe is shown in TR 25.928). Considering the chip rate, the burst structure of 1.28 Mcps TDD for normal traffic is different from that of 3.84 Mcps TDD option, (the bur... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.3 Multipath fading Case 3 | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.3.1 Definition and applicability | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.3.2 Conformance requirements | For the parameters specified in table 8.27, the BLER should not exceed the piece-wise linear BLER curve specified in table 8.28.
Table 8.27: Parameters multipath Case 3 channel for 1.28 Mcps TDD option
Parameters
Unit
Test 1
Test 2
Test 3
Test 4
Number of DPCHo
4
1
1
0
Spread factor of DPCHo
8
8
8
dB
-7
-7
-7
–
Ioc
dBm... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.3.3 Test purpose | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.3.4 Method of test | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.3.4.1 Initial conditions | 1) Connect the BS tester (UE simulator) generating the wanted signal and a set of interference generators to both BS antenna connectors for diversity reception via a combining network. The set of interference generators comprises a number of CDMA generators, each representing an individual intracell interferer (subsequ... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.3.4.2 Procedure | 1) Adjust the power of the band-limited white noise source in such a way that its power spectral density measured at the BS antenna connector takes on the value Ioc as specified in table 8.27.
2) For a given test defined by the information data rate and the BLER objective, set the power of each DPCH0 measured at the BS... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.3.5 Test requirements | The BLER measured according to subclause 8.5.3.3.4.2 shall not exceed the limits specified in table 8.28. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 8.5.3.3.6 Explanation difference | For the 1.28 Mcps chip rate TDD option, one frame(10ms) consists of two subframes(5ms), and one subframe consists of 7 timeslots, (the structure of subframe is shown in TR 25.928). Considering the chip rate, the burst structure of 1.28 Mcps TDD for normal traffic is different from that of 3.84 Mcps TDD option, (the bur... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9 RF System scenarios | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.1 General | To develop the 3GPP standard, all the relevant scenarios need to be considered and the most critical cases need to be identified for the various aspects of operation so that final parameters can be derived to meet both service and implementation requirements.
Parameters possibly influenced by the scenarios are listed i... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.2 Methodology for coexistence studies 1.28 Mcps TDD/FDD | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.2.1 Overview of the simulation | The focus of the simulations in the first step is on coexistence of macro cells considering a vehicular environment (case 3: 120km/h) with speech users only.
The simulation is a Monte-Carlo based snapshot method calculating CDFs for C/I for large numbers of stochastic mobile distributions over cells (including power co... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.2.2 Simulation parameters | Table 9.1: Receiver Parameters
No.
parameter
FDD
1.28 Mcps TDD
MS
BS
MS
BS
RX1
Sensitivity
dBm
-117
-121
-108
-110
RX2
Noise figure
dB
9
5
9
7
RX3
Antenna gain (incl. losses)
dBi
0
11
0
11
RX4
ACS
dB
33
45
33
45
RX5
Min. CIR for
8kbps speech
dB
-15.7
-20.9
-1.5
-6.7
Table 9.2: Transmitter Parameters
No.
Parameter
FDD
1... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.2.3 Scenarios | Figure 9.1
The scenarios considered in this document refer to the frequency range about 1920 MHz where TDD and FDD are allocated in adjacent frequency bands.
Since the TDD band may be used for uplink (UL) or downlink (DL) communication 3 different scenarios are of interest depending on which station (MS or BS) is recei... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.3 Methodology for coexistence studies 1.28 Mcps TDD / 3.84 Mcps TDD | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.3.1 Overview of Simulation | Same as subsection 9.2.1 |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.3.2 Simulation parameters | This section compares the different simulation parameters for 3.84 Mcps TDD and 1.28 Mcps TDD which are used to describe the ‚victim system‘ and the ‚interferer system‘ in the coexistence simulation scenarios.
Table 9.3: General Parameters
No.
Parameter
a. 3.84 Mcps TDD
b. 1.28 Mcps TDD
MS
BS
MS
BS
P1
Chip rate
Mcps
3.... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.3.3 Scenarios | Figure 9.2
The scenarios considered in this section refer to the frequency 1915MHz where 1.28 Mcps TDD and 3.84 Mcps TDD may be allocated in adjacent frequency bands.
In a first step the 1.28 Mcps TDD system is assumed to be a victim for ajacent channel interference of a 3.84 Mcps TDD system.
Since the TDD band may be ... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.4 Methodology for coexistence studies 1.28 Mcps TDD / 1.28 Mcps TDD | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.4.1 Overview of Simulation | Same as subsection 9.2.1 |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.4.2 Simulation parameters | Same as subsection 9.3.2 |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.4.3 Scenarios | Figure 9.3
In this section a scenario of two 1.28 Mcps TDD operators in the same geographic area is investigated. For both systems apart from the frequency bands the same rf parameters and again no synchronisation or coordination is assumed.
Since the TDD band may be used for uplink (UL) or downlink (DL) communication ... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.5 Results, implementation issues and recommendations | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.5.1 1.28 Mcps TDD /FDD | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.5.1.1 Simulation results | The results for the relative capacity loss are summarized in the table below.
Table 9.6
victim (receiver)
interferer (transmitter)
rel. capacity loss
FDD BS
1.28 Mcps TDD MS (cluster=1)
<2%
1.28 Mcps TDD BS
(cluster=1)
FDD MS
<2%
1.28 Mcps TDD MS
(cluster=1)
FDD MS
<2%
1.28 Mcps TDD MS
(cluster=3)
FDD MS
<3% |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.5.1.2 Conclusion | The focus of these investigations is on speech users in macro cells for a vehicular propagation environment.
The results show reasonable capacity loss values, even without coordination or time alignment between the victim and the interferer system. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.5.2 1.28 Mcps TDD / 3.84 Mcps TDD | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.5.2.1 Simulation results | The results for the relative capacity loss are summarized in the tables below.
1) For the case that the 1.28 Mcps TDD system suffers from adjacent channel, and interference from a 3.84 Mcps TDD system:
Table 9.7
Victim (receiver)
interferer (transmitter)
Relative capacity loss
1.28 Mcps TDD BS (cluster=1)
3.84 Mcps TDD... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.5.2.2 Conclusion | The focus of these investigations is on speech users in macro cells for a vehicular propagation environment.
The results show reasonable capacity loss values, even without coordination or time alignment between the victim and the interferer system. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.5.3 1.28 Mcps TDD / 1.28 Mcps TDD | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.5.3.1 Simulation results | The results for the relative capacity loss are summarized in the table below.
Table 9.9
Victim (receiver)
interferer (transmitter)
relative capacity loss
1.28 Mcps TDD BS of operator A
(cluster=1)
1.28 Mcps TDD MS of operator B
(cluster=1)
< 2%
1.28 Mcps TDD MS of operator A
(cluster=1)
1.28 Mcps TDD MS of operator B
(... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.5.3.2 Conclusion | The focus of these investigations is on speech users in macro cells for a vehicular propagation environment.
The results show reasonable capacity loss values, even without coordination or time alignment between the victim and the interferer system. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.6 Information and General purpose materials | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.6.1 CDMA Definitions and Equations | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.6.1.1 CDMA-related definitions | The following CDMA-related abbreviations and definitions are used in various 3GPP WG4 documents.
Table 9.10
1.28M chips per second.
Average energy per PN chip for DwPTS.
The ratio of the received energy per PN chip for DwPTS to the total received power spectral density at the UE antenna connector.
The ratio of the aver... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.6.1.1.1 Explanation difference | For 1.28 Mcps chip rate TDD option, the frame length is 10ms and the 10ms is divided into 2 sub-frames of 5 ms. Each subframe is composed of 7 normal traffic time slots and two special pilot slots, i.e., DwPTS for downlink and UpPTS for uplink.
For 1.28 Mcps chip rate TDD option, the other CDMA related definitions have... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.6.1.2 CDMA equations | The equations listed below describe the relationship between various parameters under different conditions. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.6.1.2.1 BS Transmission Power | Transmit power of the Base Station is normalized to 1 and can be presented as
(Normal downlink timeslots)
=1 (Timeslot 0)
=1 (DwPTS) |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.6.1.2.1.1 Explanations | 1.28 Mcps TDD option has special frame structure; its TS0 is only used for downlink so the position of P-CCPCH is fixed. DwPTS and UpPTS are unique slots so separate equations are need for them. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.7 Link Level performances | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.7.1 Simulation results for 1.28 Mcps TDD performace | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.7.1.1 Simulation assumptions | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.7.1.1.1 Simulation chain | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.7.1.1.1.1 Downlink | Because joint detection is considered for the low chip rate TDD option, the simulation has to differ from the wideband TDD simulation. An orthogonal channel noise simulator (OCNS) can not be used, instead all intracell interferer have to be modelled individually. The simulation chain is shown in the figure below.
Figur... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.7.1.1.1.2 Uplink | In the uplink the same simulation chain as for wide-band TDD is used. The uplink simulation chain is shown in figure9.5.
Figure 9.5: Uplink simulation chain
DPCH1 and DPCH2 are the DPCH for the service under investigation. DPCHoi for i=1 to n is one code with the spreading factor 8. The ratio of Îor to Ioc is varied u... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.7.1.1.2 Simulation Assumptions | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.7.1.1.2.1 General | Table 9.11
Parameter
Explanation/Assumption
Chip Rate
1.28 Mcps
Duration of TDMA sub-frame
5 ms
Number of time slots per sub-frame
7
Closed loop power control
OFF
AGC
OFF
Number of samples per chip
1 sample per chip
Propagation Conditions
See Tdoc R400TDD051
Numerical precision
Floating point simulations
BLER target
10... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 9.7.1.1.2.2 Additional downlink parameters | Table 9.12
Parameter
Value
Îor/Ioc
Ratio to meet the required BLER target
# of DPCHoi
Bit rate
Static
Case 1
Case 2
Case 3
12.2 kbps
8
8
8
8
64 kbps
2
2
2
2
144 kbps
2
2
2
2
384 kbps
0
0
0
0
Number of timeslots per sub-frame per user
12.2 kbps: TS=1
64 kbps: TS=1
144 kbps: TS=2
384 kbps: TS=4
Transmit diversity, “TxAA”... |
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