Content for TR 25.863 Word version: 11.0.0
2 References
3 Definitions, symbols and abbreviations
4 Description of Uplink Transmit Diversity Algorithms
5 Link and System Evaluation Methodology
6 Link Evaluation Results
7 System Evaluation Results
8 Impacts on UE Implementation
9 Impacts on UE Core Tx Requirements
10 New UE Core Tx Requirements
11 Analysis of UE Battery Life and Heat Reduction Savings due to ULTD
12 Impacts to NodeB Receiver due to ULTD
13 Summary of RAN WG4 Findings
14 Conclusion
$ Change history
2 References p. 8
3 Definitions, symbols and abbreviations p. 14
4 Description of Uplink Transmit Diversity Algorithms p. 14
4.1 Theoretical Analysis of Uplink Transmit Diversity p. 14
4.1.1 No Transmit Diversity p. 15
4.1.2 Switched Antenna Transmit Diversity p. 15
4.1.3 Beam-forming Transmit Diversity p. 16
4.2 Genie Algorithms p. 17
4.3 Practical Algorithms p. 19
5 Link and System Evaluation Methodology p. 21
5.1 Link Simulation Assumptions p. 21
5.2 Link Performance Evaluation Metrics p. 23
5.3 System Simulation Assumptions p. 23
5.3.1 Modelling of Antenna Imbalance p. 23
5.3.2 System Simulation Parameters p. 36
5.3.3 Modeling of NodeB Receiver Loss in System Simulations p. 37
5.4 System Performance Evaluation Metrics p. 40
6 Link Evaluation Results p. 41
6.1 Switched Antenna Transmit Diversity p. 41
6.1.1 Genie Algorithms p. 41
6.1.2 Practical Algorithms p. 45
6.1.3 Impact of Realistic E-DPCCH Decoding on Switched Antenna Transmit Diversity p. 51
6.1.4 HS-DPCCH Performance in Soft Handover with Switched Antenna Transmit Diversity p. 53
6.1.4.1 Notation p. 53
6.1.4.2 HS-DPCCH Performance p. 54
6.1.5 Sensitivity with respect to the BLER operating point p. 54
6.2 Beamforming Transmit Diversity p. 56
6.2.1 Genie Algorithms p. 56
6.2.2 Practical Algorithms p. 59
6.2.3 HS-DPCCH Performance in Soft Handover with Beamforming Transmit Diversity p. 70
6.2.3.1 Notation p. 70
6.2.3.2 HS-DPCCH Performance p. 72
6.3 Uplink Transmit Diversity Link Level Simulations with Discontinuous Transmission p. 73
6.4 Uplink Transmit Diversity Link Level Simulations with Soft Handover p. 74
6.5 Uplink Transmit Diversity Link Level Simulations with Incorrect TPC command delay p. 74
6.6 Uplink Transmit Diversity Link Level Simulations with Multipath Propagation p. 75
6.7 Conclusion on Link Evaluation Results p. 75
7 System Evaluation Results p. 77
7.1 Switched Antenna Transmit Diversity p. 77
7.1.1 Full Buffer Traffic p. 77
7.1.1.1 Results for inter-site distance 1km p. 77
7.1.1.1.1 Results for 0 dB long-term antenna imbalance and 2D antennas p. 77
7.1.1.1.2 Results for 0 dB long-term antenna imbalance and 3D antenna p. 83
7.1.1.1.3 Results for -4 dB long-term antenna imbalance and 2D antennas p. 86
7.1.1.1.4 Results for -4 dB long-term antenna imbalance and 3D antennas p. 89
7.1.1.1.5 Results for 0 dB long-term antenna imbalance and 2D antennas with 50 % penetration of SATD terminals p. 91
7.1.1.1.6 Results for 0 dB long-term antenna imbalance and 2D antennas with 25 % penetration of SATD terminals and 1 000 m ISD p. 94
7.1.1.1.7 Results for 0 dB long-term antenna imbalance and 2D antennas with 75 % penetration of SATD terminals and 1 000 m ISD p. 98
7.1.1.2 Results for inter-site distance 2.8 km p. 103
7.1.1.2.1 Results for 0 dB long-term antenna imbalance and 2D antennas p. 103
7.1.1.2.2 Results for -4 dB long-term antenna imbalance and 2D antennas p. 106
7.1.1.2.3 Results for ISD 2.8 km with 50 % penetration of SATD terminals p. 107
7.1.1.2.4 Results for 0 dB long-term antenna imbalance and 2D antennas with 25 % penetration of SATD terminals and 2 800 m ISD p. 110
7.1.1.2.5 Results for 0 dB long-term antenna imbalance and 2D antennas with 75 % penetration of SATD terminals and 2 800 m ISD p. 114
7.1.1.3 Sensitivity to BLER target p. 118
7.1.1.4 System performance evaluation for suboptimal SATD algorithms p. 119
7.1.2 Bursty Traffic p. 121
7.2 Beam-forming Transmit Diversity p. 130
7.2.1 Full Buffer Traffic p. 130
7.2.1.1 Results for inter-site distance 1km p. 130
7.2.1.1.1 Results for 0 dB long-term antenna imbalance and 2D antennas p. 130
7.2.1.1.2 Results for 0 dB long-term antenna imbalance and 3D antennas p. 139
7.2.1.1.3 Results for -4 dB long-term antenna imbalance and 2D antennas p. 142
7.2.1.1.4 Results for -4 dB long-term antenna imbalance and 3D antennas p. 144
7.2.1.1.5 Results for 0 dB long-term antenna imbalance and 2D antennas with 50 % beamforming UE penetration p. 146
7.2.1.1.6 Results for 0 dB long-term antenna imbalance and 2D antennas with 25 % penetration of BFTD terminals and 1 000 m ISD p. 150
7.2.1.1.7 Results for 0 dB long-term antenna imbalance and 2D antennas with 75 % penetration of BFTD terminals and 1 000 m ISD p. 153
7.2.1.2 Results for inter-site distance 2.8 km p. 156
7.2.1.2.1 Results for 0 dB long-term antenna imbalance and 2D antennas p. 156
7.2.1.2.2 Results for -4 dB long-term antenna imbalance and 2D antennas p. 160
7.2.1.2.3 Results for 0 dB long-term antenna imbalance and 2D antennas with 50 % beamforming UE penetration p. 161
7.2.1.2.4 Results for 0 dB long-term antenna imbalance and 2D antennas with 25 % penetration of BFTD terminals and 2 800 m ISD p. 164
7.2.1.2.5 Results for 0 dB long-term antenna imbalance and 2D antennas with 75 % penetration of BFTD terminals and 2 800 m ISD p. 166
7.2.2 Bursty Traffic p. 169
7.3 Conclusion on System Evaluation Results p. 176
8 Impacts on UE Implementation p. 178
8.1 Switched Antenna Transmit Diversity p. 178
8.2 Beamforming Transmit Diversity p. 179
8.3 Summary of UE Implementation Impact due to ULTD p. 181
9 Impacts on UE Core Tx Requirements p. 182
10 New UE Core Tx Requirements p. 183
10.1 Test Feasibility p. 183
10.2 Switched Antenna Transmit Diversity p. 184
10.3 Beamforming Transmit Diversity p. 184
11 Analysis of UE Battery Life and Heat Reduction Savings due to ULTD p. 185
11.1 Method 1 p. 185
11.1.1 PA Efficiency Curves p. 185
11.1.2 UE Transmit Power Profiles p. 186
11.1.3 UE Transmit Architecture Assumption for BFTD p. 188
11.2 Method 2 p. 188
11.3 Switched Antenna Transmit Diversity p. 189
11.3.1 UE Battery Life Analysis based on Method 1 for SATD [73] p. 189
11.3.2 UE Battery Life Analysis based on Method 2 for SATD [74] p. 190
11.4 Beamforming Transmit Diversity p. 192
12 Impacts to NodeB Receiver due to ULTD p. 194
12.1 Results for practical Node B #1 p. 194
12.1.1 Practical NodeB Receiver Description p. 194
12.1.1.1 DCH Searcher and Finger Management p. 194
12.1.1.2 Practical Channel Estimation and Time Tracking Loop p. 195
12.1.2 Switched Antenna Transmit Diversity p. 195
12.1.2.1 DCH Finger and Finger Management p. 195
12.1.2.2 Practical Channel Estimation and Time Tracking Loop p. 196
12.1.2.2.1 Link Simulation Results p. 196
12.1.2.2.2 Observations p. 197
12.1.3 Beamforming Transmit Diversity p. 204
12.2 Results for practical Node-B #2 p. 208
13 Summary of RAN WG4 Findings p. 209
14 Conclusion p. 212
14.1 Conclusions specific to open loop transmit diversity p. 212
14.2 Conclusions specific to closed loop transmit diversity p. 213
$ Change history p. 222
