Resource Allocation in Uplink OFDMA Wireless Systems
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ACKNOWLEDGMENTS xv
ACRONYMS xvii
CHAPTER 1 INTRODUCTION 1
1.1 Evolution of Wireless Communication Systems 1
1.2 Orthogonal Frequency Division Multiple Access 2
1.3 Organization of this Book 5
CHAPTER 2 BACKGROUND ON DOWNLINK RESOURCE ALLOCATION IN OFDMA WIRELESS NETWORKS 9
2.1 Centralized Single Cell Scheduling 9
2.2 Distributed Scheduling 13
2.3 Scheduling in Multicell Scenarios 14
2.3.1 Multicell Scheduling in LTE 16
2.4 Summary 18
CHAPTER 3 ERGODIC SUM-RATE MAXIMIZATION WITH CONTINUOUS RATES 19
3.1 Background 19
3.2 Problem Formulation 21
3.3 Problem Solution 23
3.4 Achievable Rate Region 28
3.5 Results and Discussion 35
3.6 Summary 41
CHAPTER 4 ERGODIC SUM-RATE MAXIMIZATION WITH DISCRETE RATES 43
4.1 Background 43
4.2 Problem Formulation 44
4.3 Problem Solution 46
4.4 Results and Discussion 52
4.5 Summary 57
CHAPTER 5 GENERALIZATION TO UTILITY MAXIMIZATION 59
5.1 Background 59
5.2 Ergodic Utility Maximization with Continuous Rates 60
5.3 Ergodic Utility Maximization with Discrete Rates 64
5.4 Summary 68
CHAPTER 6 SUBOPTIMAL IMPLEMENTATION OF ERGODIC SUM-RATE MAXIMIZATION 69
6.1 Background 69
6.2 Suboptimal Approximation of the Continuous Rates Solution 71
6.3 Suboptimal Approximation of the Discrete Rates Solution 73
6.4 Complexity Analysis of the Suboptimal Algorithms 76
6.5 Results and Discussion 78
6.6 Summary 88
CHAPTER 7 SUBOPTIMAL IMPLEMENTATION WITH PROPORTIONAL FAIRNESS 89
7.1 Background 89
7.2 Proportional Fair Scheduling 91
7.3 Low Complexity Utility Maximization Algorithms 94
7.4 Proportional Fair Utilities 100
7.5 Results and Discussion 101
7.6 Summary 112
CHAPTER 8 SCHEDULING WITH DISTRIBUTED BASE STATIONS 113
8.1 Background 113
8.2 System Model 115
8.3 Scheduling with Distributed Base Stations 118
8.4 Results and Discussion 120
8.5 Distributed Base Stations Versus Relays 128
8.6 Distributed Base Stations Versus Femtocells 131
8.7 Summary 133
CHAPTER 9 DISTRIBUTED SCHEDULING WITH USER COOPERATION 135
9.1 Background 135
9.2 Cooperative Distributed Scheduling Scheme 136
9.3 Distributed Scheduling Algorithm 140
9.4 Results and Discussion 142
9.5 Summary 149
CHAPTER 10 DISTRIBUTED SCHEDULING WITHOUT USER COOPERATION 151
10.1 Background 151
10.2 Noncooperative Distributed Scheduling Scheme 153
10.3 Comparison to Existing Schemes 155
10.4 Analysis of Measurement Inaccuracies 156
10.5 Results and Discussion 160
10.6 Optimization of Transmission Probabilities 165
10.7 Practical Considerations 169
10.8 Summary 171
CHAPTER 11 CENTRALIZED MULTICELL SCHEDULING WITH INTERFERENCE MITIGATION 173
11.1 Background 173
11.2 Problem Formulation 175
11.3 Iterative Pricing-Based Power Control Solution 178
11.4 Pricing Game with Centralized Control 184
11.5 Suboptimal Scheduling Scheme Using Pricing-Based Power Control 186
11.6 Suboptimal Scheduling Scheme Using Probabilistic Transmission 190
11.7 Results and Discussion 191
11.8 Summary 201
CHAPTER 12 DISTRIBUTED MULTICELL SCHEDULING WITH INTERFERENCE MITIGATION 203
12.1 Background 203
12.2 System Model 204
12.3 Intracell Cooperation: Distributed Scheduling 205
12.4 Intercell Interference Mitigation/Avoidance 206
12.5 Results and Discussion 209
12.6 Practical Aspects 217
12.6.3 Application in a CR Network 219
12.6.4 Application in a Network with Femtocell Deployment 219
12.6.5 Distributed Multicell Scheduling without User Cooperation 220
12.7 Summary 221
CHAPTER 13 SCHEDULING IN STATE-OF-THE-ART OFDMA-BASED WIRELESS SYSTEMS 223
13.1 WiMAX Scheduling Overview 223
13.2 LTE Scheduling Overview 228
13.3 SCFDMA Versus OFDMA Scheduling 235
13.4 Comparison to the LTE Power Control Scheme 240
13.5 Summary 245
CHAPTER 14 FUTURE RESEARCH DIRECTIONS 247
14.1 Resource Allocation with Multiple Service Classes 247
14.2 Network MIMO 247
14.3 Coalitional Game Theory 248
14.4 Resource Allocation with Femtocells 249
14.5 Green Networks and Self-Organizing Networks 249
14.6 Joint Uplink/Downlink Resource Allocation 250
14.7 Joint Resource Allocation in Heterogeneous Networks 251
14.8 Resource Allocation in Cognitive Radio Networks 252
BIBLIOGRAPHY 255
INDEX 269
