Order Statistics in Wireless Communications: Diversity, Adaptation, and Scheduling in MIMO and OFDM Systems

Cover......Page 1
Order Statistics in Wireless Communications......Page 3
Title......Page 5
Copyright......Page 6
To Our Families......Page 7
Contents......Page 9
Preface......Page 13
References......Page 15
General notation......Page 16
Abbreviations......Page 17
1 Introduction......Page 19
1.1 Order statistics in wireless system analysis......Page 20
1.2 Diversity, adaptation, and scheduling......Page 21
1.3 Outline of the book......Page 22
References......Page 23
2.2 Statistical fading channel models......Page 25
2.2.1 Path loss and shadowing......Page 26
2.2.2 Multipath fading......Page 28
2.2.3 Frequency-flat fading......Page 31
2.2.4 Channel correlation......Page 33
2.3.1 Linear bandpass modulation......Page 34
2.3.2 Performance analysis over fading channels......Page 38
2.3.3 Adaptive transmission......Page 41
2.4.1 Antenna reception diversity......Page 44
2.4.2 Threshold combining and its variants......Page 48
2.4.3 Transmit diversity......Page 53
2.5 Summary......Page 55
References......Page 56
3.2.1 Marginal and joint distributions......Page 58
3.2.2 Conditional distributions......Page 59
3.3 Distribution of the partial sum of largest order statistics......Page 60
3.3.1 Exponential special case......Page 61
3.3.2 General case......Page 62
3.4.1 Cases involving all random variables......Page 64
3.4.2 Cases only involving the largest random variables......Page 67
3.5 MGF-based unified analytical framework for joint distributions......Page 71
3.5.1 General steps......Page 72
3.5.2 Illustrative examples......Page 73
3.6 Limiting distributions of extreme order statistics......Page 79
3.8 Bibliography notes......Page 81
Appendix to chapter 3. Order statistics......Page 82
References......Page 88
4.2 Generalized selection combining (GSC)......Page 90
4.2.1 Statistics of output SNR......Page 91
4.3 GSC with threshold test per branch (T-GSC)......Page 93
4.3.1 Statistics of output SNR......Page 94
4.4 Generalized switch and examine combining (GSEC)......Page 96
4.4.1 Statistics of output SNR......Page 98
4.4.2 Average number of path estimations......Page 99
4.4.3 Numerical examples......Page 100
4.5 GSEC with post-examining selection (GSECps)......Page 102
4.5.1 Statistics of output SNR......Page 103
4.5.2 Complexity analysis......Page 107
4.5.3 Numerical examples......Page 108
4.7 Bibliography notes......Page 111
References......Page 112
5.1 Introduction......Page 115
5.2 Output-threshold MRC......Page 116
5.2.1 Statistics of output SNR......Page 118
5.2.2 Power saving analysis......Page 121
5.3 Minimum selection GSC......Page 122
5.3.1 Mode of operation......Page 123
5.3.2 Statistics of output SNR......Page 124
5.3.3 Complexity savings......Page 131
5.4 Output-threshold GSC......Page 133
5.4.1 Complexity analysis......Page 136
5.4.2 Statistics of output SNR......Page 140
5.5 Adaptive transmit diversity......Page 145
5.5.1 Mode of operation......Page 146
5.5.2 Statistics of received SNR......Page 148
5.6 RAKE finger management over the soft handoff region......Page 153
5.6.1 Finger management schemes......Page 154
5.6.2 Statistics of output SNR......Page 155
5.6.3 Complexity analysis......Page 158
5.7 Joint adaptive modulation and diversity combining......Page 162
5.7.1 Power-efficient AMDC scheme......Page 164
5.7.2 Bandwidth-efficient AMDC scheme......Page 166
5.7.3 Bandwidth-efficient and power-greedy AMDC scheme......Page 168
5.7.4 Numerical examples......Page 172
References......Page 176
6.1 Introduction......Page 180
6.2 Multiuser diversity......Page 181
6.2.1 Addressing fairness......Page 182
6.2.2 Feedback load reduction......Page 184
6.3.1 Absolute SNR-based scheduling......Page 186
6.3.2 Normalized SNR-based scheduling......Page 188
6.4 Multiuser parallel scheduling......Page 189
6.4.1 Generalized selection multiuser scheduling (GSMuS)......Page 190
6.4.2 On–off based scheduling (OOBS)......Page 192
6.4.3 Switched-based scheduling (SBS)......Page 194
6.4.4 Numerical examples......Page 198
6.5 Power allocation for SBS......Page 200
6.5.1 Power reallocation algorithms......Page 201
6.5.2 Performance analysis......Page 202
6.5.3 Numerical examples......Page 204
6.7 Bibliography notes......Page 207
References......Page 208
7.1 Introduction......Page 211
7.2.1 MIMO channel capacity......Page 212
7.2.2 Multiuser MIMO systems......Page 214
7.3.1 Zeroforcing beamforming transmission......Page 216
7.3.2 User selection strategies......Page 218
7.3.3 Sum-rate analysis......Page 219
7.3.4 Numerical examples......Page 223
7.4 RUB-based system with user selection......Page 224
Best-beam SINR and index strategy......Page 226
7.4.2 Asymptotic analysis for BBSI strategy......Page 227
7.4.3 Statistics of ordered-beam SINRs......Page 228
BBSI strategy......Page 230
BBI strategy......Page 234
7.5 RUB with conditional best-beam index feedback......Page 240
7.5.1 Mode of operation and feedback load analysis......Page 241
Distribution of the number of active beams......Page 242
7.5.2 Sum-rate analysis......Page 243
7.6 RUB performance enhancement with linear combining......Page 247
7.6.1 System and channel model......Page 249
7.6.2 M beam feedback strategy......Page 250
Optimal combining......Page 251
7.6.3 Best-beam feedback strategy......Page 252
Selection combining......Page 253
References......Page 259
References......Page 263
Index......Page 273