Resource Allocation in OFDM Based Wireless Relay Networks ...

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Contents Acknowledgment Contents Abstract List of Tables List of Figures List of Acronyms i iii vi viii ix xi Chapter 1. Introduction 1 1.1 Overview of Relay Networks . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Overview of OFDM . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.3 Basics of the Optimization Theory . . . . . . . . . . . . . . . . . . . 6 1.4 Resource Allocation Problem . . . . . . . . . . . . . . . . . . . . . . . 9 1.5 Contribution and Organization of the Thesis . . . . . . . . . . . . . . 11 Chapter 2. Resource Allocation in Multi-User Uplink Systems 15 2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.2 System Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 2.3 Resource Allocation Schemes . . . . . . . . . . . . . . . . . . . . . . . 21 2.3.1 Problem Formulation . . . . . . . . . . . . . . . . . . . . . . . 21 2.3.2 Joint Resource Allocation Scheme . . . . . . . . . . . . . . . . 23 iii
Contents 2.3.3 Proposed Low-Complexity Suboptimal Solution . . . . . . . . 30 2.4 Generalization to Multiple Relay Scenario . . . . . . . . . . . . . . . 31 2.4.1 Joint Optimization . . . . . . . . . . . . . . . . . . . . . . . . 33 2.4.2 Suboptimal Algorithm . . . . . . . . . . . . . . . . . . . . . . 35 2.5 Simulation Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 2.6 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Chapter 3. Resource Optimization in Bidirectional Relay Networks 43 3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 3.2 System Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 3.3 Problem Formulation . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 3.4 Joint Resource Allocation Scheme . . . . . . . . . . . . . . . . . . . . 50 3.4.1 Lagrange Dual Decomposition: Solving the Dual Function . . 51 3.4.2 Solving the Dual Problem with Sub-gradient Method . . . . . 53 3.5 Step-Wise Low-Complexity Resource Allocation Scheme . . . . . . . 54 3.5.1 Sub-carrier Allocation for Given Power Allocation . . . . . . . 54 3.5.2 Tone Matching for Given Power Allocation and Sub-carrier Allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 3.5.3 Power Allocation for Given Sub-carrier Allocation and Tone Matching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 3.6 Simulation Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 3.7 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Chapter 4. OFDM Resource Allocation for Parallel Relay Communication 61 4.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 4.2 System Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 4.3 Cooperative Non-Orthogonal Transmission . . . . . . . . . . . . . . . 64 4.3.1 Joint Optimization Algorithm . . . . . . . . . . . . . . . . . . 66 4.3.2 Suboptimal Algorithm . . . . . . . . . . . . . . . . . . . . . . 70 iv
Page 1 and 2: Resource Allocation in OFDM Based W
Page 3 and 4: Dedications: To my family
Page 5: Acknowledgment I am greatly thankfu
Page 9 and 10: Abstract The combination of relay t
Page 11 and 12: List of Tables 3.1 Complexity compa
Page 13 and 14: List of Figures 4.1 System model fo
Page 15 and 16: List of Acronyms IEEE MU RS AWGN OW
Page 17 and 18: 1.1 Overview of Relay Networks wire
Page 19 and 20: 1.2 Overview of OFDM Figure 1.2: Th
Page 21 and 22: 1.3 Basics of the Optimization Theo
Page 23 and 24: 1.3 Basics of the Optimization Theo
Page 25 and 26: 1.4 Resource Allocation Problem is
Page 27 and 28: 1.5 Contribution and Organization o
Page 29 and 30: 1.5 Contribution and Organization o
Page 31 and 32: 2.1 Introduction allocated to a nod
Page 33 and 34: 2.1 Introduction The main contribut
Page 35 and 36: 2.2 System Model where h m,k denote
Page 37 and 38: 2.3 Resource Allocation Schemes opt
Page 39 and 40: 2.3 Resource Allocation Schemes ( )
Page 41 and 42: 2.3 Resource Allocation Schemes and
Page 43 and 44: 2.3 Resource Allocation Schemes tha
Page 45 and 46: 2.3 Resource Allocation Schemes 2.3
Page 47 and 48: 2.4 Generalization to Multiple Rela
Page 49 and 50: 2.4 Generalization to Multiple Rela
Page 51 and 52: 2.5 Simulation Results • OptSol/J
Page 53 and 54: 2.5 Simulation Results 0.9 0.85 0.8
Page 55 and 56: 2.6 Summary 2.6 2.4 2.2 2 Rate (bit
Page 57 and 58:
2.6 Summary 2.4 2.2 2 1.8 N=4 N=3 N
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3.1 Introduction A new technology c
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3.1 Introduction • Broadcast Phas
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3.2 System Model MU MU 3 8 A 1 2 7
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3.4 Joint Resource Allocation Schem
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3.4 Joint Resource Allocation Schem
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3.5 Step-Wise Low-Complexity Resour
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3.6 Simulation Results and SNR B m,
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3.6 Simulation Results 3 2.5 2 Uppe
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3.7 Summary 1.8 1.6 1.4 JntOpt SubO
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4.1 Introduction • Non-orthogonal
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4.3 Cooperative Non-Orthogonal Tran
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4.4 Optimization under Orthogonal T
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4.4 Optimization under Orthogonal T
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4.5 Simulations Then, the over all
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4.5 Simulations 40 30 20 Sum−ρ S
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4.6 Summary 0.9 0.8 0.7 JPSC Pow EP
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Chapter 5 Lifetime Maximization in
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5.1 Introduction Figure 5.2: Linear
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5.2 System Model antenna that canno
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5.4 Lifetime Maximization Scheme 5.
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5.4 Lifetime Maximization Scheme wh
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5.5 Simulation Results 150 OPT−SO
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5.6 Summary Lifetime (S) 150 100 50
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Chapter 6 Resource Allocation in Co
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7. Conclusions were considered for
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Bibliography [12] A. Peled, and A.
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Bibliography [36] Z. Luo and S. Zha
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Bibliography [61] D. H. N. Nguyen,
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Bibliography [84] A. Goldsmith, S.
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Bibliography [105] Y. Li, W. Wang,
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Appendix A Derivations of Closed-Fo
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B. Derivations of the Optimal Power
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