Adaptive PHY-MAC Design for Broadband Wireless Systems ( River Publishers Series in Communications )

Publication series :River Publishers Series in Communications

Author: Prasad> Ramjee  

Publisher: River Publishers‎

Publication year: 2010

E-ISBN: 9788793102316

P-ISBN(Paperback): 9788792329080

Subject: TN92 无线通信

Keyword: 无线电电子学、电信技术

Language: ENG

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Chapter

3 Adaptive Subcarrier Bandwidth

3.1 Adaptive Subcarrier Bandwidth in TDM-OFDM

3.1.1 System Description

3.1.2 Analytical Model

3.1.3 Algorithm for Adaptive Bandwidth for Subcarriers

3.1.4 Results and Discussion

3.1.5 Conclusion

3.2 OFDMA Framework

3.2.1 Analytical Model

3.2.2 Results and Discussion

3.2.3 Conclusion

3.3 Summary

4 Variable Guard Interval

4.1 Introduction

4.2 System Description

4.3 Required GI

4.4 Performance and Discussion

4.5 Conclusion

5 Hybrid Multicarrier Spread Spectrum

5.1 Subcarrier Hopping Multicarrier Spread Spectrum

5.1.1 Introduction

5.1.2 System Description

5.1.3 Analytical Model

5.1.4 Simulation Results and Discussion

5.1.5 Conclusion

5.2 MC-SS with Receiver Impairments

5.2.1 Introduction

5.2.2 System Description

5.2.3 Simulation Environment, Results and Discussion

5.2.4 Conclusion

5.3 Summary

6 Coordinated Subcarrier and Band Hopping in OFDMA Systems

6.1 Introduction

6.2 Multiple Access (or Channelization) Approach

6.3 User Grouping

6.4 Subcarrier and Band Hopping Strategies

6.5 Transceiver Structure

6.6 Hopping Sequence Design

6.6.1 Facts in Downlink

6.6.2 Design Goal

6.6.3 Assumptions

6.6.4 Physical Considerations

6.6.5 Sequence Design Preliminaries

6.6.6 Slow Band Hopping (SBH)

6.6.7 Fast Band Hopping (FBH)

6.6.8 Sub Carrier Hopping (SCH)

6.6.9 Implementation of Hopping Mechanism

6.7 System Level Simulation

6.7.1 Interference Calculation

6.7.2 Outage SINR Analysis

6.7.3 Goodput Simulations

6.8 Conclusion

7 Hybrid Link Adaptation

7.1 Introduction

7.2 Degrees of Freedom in Link Adaptation Process

7.3 Bit and Power Loading Algorithm

7.4 System Model

7.5 Hybrid LA Strategies

7.5.1 Different Link Adaptation Algorithms

7.5.2 LA with Different Subchannel Sizes

7.5.3 Fixed Coding Rate

7.5.4 LA Rate

7.5.5 Different LA and PC Rates

7.5.6 Interaction between Spatial Diversity and Link Adaptation

7.6 Discussion

7.7 Conclusion

8 Link Adaptation under Transceiver Impairments

8.1 Influence of Nonlinear HPA

8.1.1 HPA Models

8.1.2 Effect of HPA on Different Modulation and Coding Rates

8.1.3 Link Adaptation under HPA Impairments

8.1.4 Conclusion

8.2 LA under ICI

8.2.1 Introduction

8.2.2 LA under Undetected ICI

8.2.3 Conclusion

8.3 Summary

9 Bit Loading on Pilot Subcarriers

9.1 Introduction

9.2 System Description

9.3 Analytical Framework and Algorithm

9.4 Simulation and Discussion

9.5 Conclusion

10 Joint Link Adaptation and Resource Allocation in SISO/SIMO Systems

10.1 Fairness

10.2 Round Robin (RR)

10.3 Maximum Carrier to Interference Ratio (MAX C/I)

10.4 Proportional Fair (PF)

10.5 Summary

10.6 System Setup

10.7 Comparison between the Link Level and System Level Simulator

10.8 Simulation Result for Different RA Schemes

10.8.1 Allocated Bit,Coding Rate and Rate

10.8.2 Fairness

10.8.3 UE Alive Time

10.8.4 SINR at UE and NB

10.8.5 UE Throughput and Cell Throughput

10.8.6 Power Utilization

10.8.7 User Throughput versus Averaged SINR and Distance

10.8.8 Allocation Correlation

10.8.9 Rate Allocation at Different Distance Ranges

10.8.10 Number of Served and Dropped UEs per Second

10.8.11Summary

10.9 Simulation Result for PF with Different Configurations

10.9.1 Fairness

10.9.2 SINR at UE and NB

10.9.3 UE Throughput and Cell Throughput

10.9.4 Power Utilization

10.9.5 User Throughput versus Averaged SINR & Distance

10.9.6 Number of Served and Dropped UEs per Second

11 MIMO Precoding in Multi-User Scenarios

11.1 Precoding Techniques

11.1.1 Linear Precoding Techniques

11.1.2 Nonlinear Precoding Techniques

11.2 Problem Formulation

11.2.1 SDMA & CI with Single Antenna at UE

11.2.2 OFDMA & SDMA & CI with Single Antenna at UE

11.2.3 SDMA & CI/BD with Multiple Antennas at UE

11.2.4 OFDMA & SDMA & CI/BD with Multiple Antennas at UE

11.3 Summary

12 Simulation Results for Linear MIMO Precoding Techniques

12.1 System Setup

12.2 Comparison between SNR and SINR with Precoding

12.3 Simulation Result for Precoding

12.3.1 SDMA with Single-Antenna UEs

12.3.2 OFDMA & SDMA with Single-Antenna UEs

12.3.3 SDMA with Correlated Antennas at UE

12.3.4 OFDMA & SDMA with Multiple-Antenna UEs

12.4 Summary

13 Impact of MIMO CCI: SINR Analysis and System Performance

13.1 Introduction

13.2 Assumptions and Definitions

13.2.1 Assumptions

13.2.2 Link Definitions

13.2.3 Scenario Definition

13.3 Symbol-by-Symbol Linear Receivers

13.3.1 MRC Receiver

13.3.2 MMSE Receiver

13.4 SINR Expressions

13.4.1 SIMO in Desired Link

13.4.2 AS in the Desired Link

13.4.3 TxBF in the Desired Link

13.4.4 STBC in the Desired Link

13.5 SINR Analysis

13.5.1 Cellular Scenario

13.5.2 Equal Power Scenario

13.6 Probability of Error

13.6.1 When Interferer is not STBC

13.6.2 When an Interferer Is STBC

13.7 BER Evaluations via Numerical Simulations

13.7.1 Simulation Parameters

13.7.2 Equal Power Scenario

13.7.3 Cellular Scenario

13.8 Summary

14 MIMO Systems at Cell Edge: Robust Receiver Design

14.1 Introduction

14.2 Multiple Symbol Processing

14.2.1 Scenario and Assumptions

14.2.2 Linear MMSE receiver: Multiple symbol processing

14.2.3 Impact on System Level and Implementation Related Issues

14.3 Numerical Evaluations

14.3.1 Simulations Parameters

14.3.2 Mean SINR

14.3.3 Initial Investigations in Time-Invariant Channel

14.3.4 Simulation with Different Type of MIMO Interferers

14.3.5 Time-Variant Case

14.3.6 STBC Detection Module

14.4 Fractional Frequency Re-Use at Cell Edge

14.4.1 Motivation and Problem Definition

14.4.2 Prior Arts

14.4.3 The FFR Method

14.4.4 Evaluation of Proposed FFR Method

14.5 Summary

15 Conclusions and Future perspectives

15.1 Conclusions

15.2 Future Perspective

15.2.1 Green Radio

15.2.2 Soft Combining Using Network MIMO

15.2.3 Interference Management

15.2.4 Dynamic Fractional Frequency Re-Use

15.2.5 Dynamic Sectoring

15.2.6 Home Base Stations and Self Organizing Networks

15.2.7 Spectrum Sharing and Cognitive Radio

A The System-Level Simulator

A.1 Cell

A.2 Path Loss Model

A.3 Minimum Coupling Loss (MCL)

A.4 Shadowing Model

A.5 User Mobility

A.6 Wrap Around

A.7 SINR

A.8 Feedback Delay

A.9 CSI Estimation Error and Quantization

A.10 Error Model

A.11 Interference Model

A.12 Flowchart of the System-Level Simulator

A.13 Brief Description of the Simulator

A.14 Folder Structure

A.15 To Begin the Simulator

A.16 Function Flow

A.16.1 Link Level Simulation

A.16.2 System Level Simulation

A.17 Primary Parameter Description

B LA in OFDM Systems under HPA

B.1 PAPR in OFDM

B.1.1 CDF of PAPR

B.1.2 SDNR Plots

B.2 Performance of Different Modulation and Coding

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