OFDM-Based Broadband Wireless Networks: Design and Optimization

Contents

Preface

1 Introduction

1.1 OFDM-based wireless network overview

1.1.1 Digital broadcasting and DVB-T

1.1.2 Wireless LAN and IEEE 802.11

1.1.3 WiMAX and IEEE 802.16

1.2 The need for “cross-layer” design

1.3 Organization of this text

Bibliography

2 OFDM Fundamentals

2.1 Broadband radio channel characteristics

2.1.1 Envelope fading

2.1.2 Time dispersive channel

2.1.3 Frequency dispersive channel

2.1.4 Statistical characteristics of broadband channels

2.2 Canonical form of broadband transmission

2.3 OFDM realization

2.4 Summary

Bibliography

3 PHY Layer Issues — System Imperfections

3.1 Frequency synchronization

3.1.1 OFDM carrier offset data model

3.1.2 Pilot-based estimation

3.1.3 Non-pilot based estimation

3.2 Channel estimation

3.2.1 Pilots for 2D OFDM channel estimation

3.2.2 2D MMSE channel estimation

3.2.3 Reduced complexity channel estimation

3.3 I/Q imbalance compensation

3.3.1 I/Q imbalance model

3.3.2 Digital compensation receiver

3.3.3 Frequency offset estimation with I/Q imbalance

3.4 Phase noise compensation

3.4.1 Mathematical models for phase noise

3.4.2 CPE estimation with channel state information

3.4.3 Time domain channel estimation in the presence of CPE

3.4.4 CPE estimation without explicit CSI

3.5 Summary

Bibliography

4 PHY Layer Issues – Spatial Processing

4.1 Antenna array fundamentals

4.2 Beamforming

4.2.1 Coherent combining

4.2.2 Zero-forcing

4.2.3 MMSE reception (optimum linear receiver)

4.2.4 SDMA

4.2.5 Broadband beamforming

4.3 MIMO channels and ...