Transmission Techniques for Emergent Multicast and Broadcast Systems

by da Silva; Mßrio Marques

• ISBN13: 9781439815939
• ISBN10: 1439815933
• Edition: 1st
• Format: Hardcover
• Copyright: 2010-05-25
• Publisher: Auerbach Public

Summary

Describing efficient transmission schemes for broadband wireless systems, Transmission Techniques for Emergent Multicast and Broadcast Systems examines advances in transmission techniques and receiver designs capable of supporting the emergent wireless needs for multimedia broadcast and multicast service (MBMS) requirements. It summarizes the research and development taking place in wireless communications for multimedia MBMS and addresses the means to improved spectral efficiency to allow for increased user bit rate, as well as increased capacity of the digital cellular radio network.The text highlights essential requirements for new services, providing a clear understanding of the corresponding fundamentals and theory needed to fulfill such requirements. Although the schemes and transmission and detection techniques presented are applicable to a wide range of digital communication systems, including wireless, cellular, and satellite, the text maintains a focus on multimedia services using multicast and broadcast techniques. It also:Reports on important enhancements, including transmission techniques, receiver designs, and multi-resolution schemes for modern broadband wireless systemsCovers key aspects in the development of emergent services to support the requirements of new servicesDiscusses the transition from Wideband Code Division Multiple Access (WCDMA) to block transmission techniquesConsiders advanced receivers such as iterative (turbo) equalization schemes for these techniquesThis complete resource includes coverage of Multiple Input'Multiple Output (MIMO), hierarchical constellations, multi-resolution transmission, macro-diversity principles, and different frequency reuse schemes. It also proposes advances for different propagation and multi-user environments, using both WCDMA and Orthogonal Frequency Division Multiple Access (OFDMA). The text concludes by explaining how to effectively combine these techniques and enhancements for the purpose of implementing the evolved MBMS (E-MBMS).

Table of Contents

Preface	p. ix
Authors	p. xi
Introduction	p. 1
Requirements for MBMSs	p. 2
Transmission Techniques to Support Wireless Advances for MBMS Requirements	p. 4
Wideband Code Division Multiple Access	p. 5
Orthogonal Frequency Division Multiplexing	p. 8
Multiple Input-Multiple Output	p. 10
Hierarchical QAM Constellations	p. 13
Multiresolution Transmission Schemes	p. 15
Macrodiversity	p. 16
Multihop Relays	p. 19
Current and Emergent Wireless Systems	p. 20
HSPA Improvements	p. 20
LTE Specifications	p. 22
Expectations for 4G	p. 23
Wi-Fi Overview	p. 25
WiMAX Overview	p. 26
Transmission Techniques for Broadband Systems	p. 31
Spread Spectrum Communications	p. 31
General Model	p. 33
Narrowband CDMA	p. 36
Wideband CDMA	p. 38
OFDM Schemes	p. 42
Signal Characterization	p. 42
Transmitter Structure	p. 46
Receiver Structure	p. 51
Envelope Fluctuations	p. 58
SC with FDE	p. 60
Linear FDE	p. 60
IB-DFE Receivers	p. 65
Performance Comparisons between OFDM and SC-FDE	p. 69
Channel Estimation	p. 73
Channel Estimation Requirements	p. 74
Performance in Flat Rayleigh Fading Channels without Diversity	p. 74
Performance in Flat Rayleigh Fading Channels with Diversity	p. 80
Conventional Channel Estimation	p. 83
Channel Estimation with Implicit Pilots	p. 88
Concept	p. 88
Transmitted Signals	p. 90
Receiver Design	p. 94
OFDM Schemes	p. 94
SC-FDE Schemes	p. 97
Performance Results for OFDM Schemes	p. 98
Performance Results for SC-FDE Schemes	p. 103
Channel Estimation for CDMA Transmissions	p. 109
Hierarchical Constellations	p. 117
Constellation Design	p. 117
BER Analysis of Hierarchical M-QAM Constellations	p. 123
AWGN Channel	p. 123
16-HQAM	p. 123
M-HQAM	p. 125
Flat Fading Channel with Perfect Channel Estimation	p. 127
MFB in Multipath Rayleigh Fading Channels	p. 132
Slow Fading Channel	p. 133
Fast Fading Channel	p. 137
Channel Estimation Issues	p. 141
Flat Rayleigh Fading with Imperfect Channel Estimation	p. 142
No Diversity	p. 142
With Diversity	p. 147
Enhanced Channel Estimation for CDMA Transmissions	p. 150
Enhanced Channel Estimation for OFDM	p. 161
Conventional Pilots	p. 162
Superimposed Pilots	p. 164
Multiantenna Systems	p. 169
Channel Capacity for Multiantennas Systems	p. 170
Transmit and Receive Diversity Gains	p. 174
Open/Closed Loop Techniques for Flat Fading	p. 174
Open Loop Techniques	p. 174
Closed Loop Techniques	p. 176
WCDMA	p. 177
SC-FDE/OFDM	p. 180
STBC for Two Antennas	p. 181
STBC for Four Antennas	p. 182
Receiver Design	p. 183
Performance Results	p. 186
Spartial Multiplexing	p. 188
Spatial Multiplexing: WCDMA	p. 188
MPIC for HSDPA	p. 188
MMSE Receiver for WCDMA	p. 191
Spatial Multiplexing: SC-FDE	p. 201
Iterative Frequency-Domain Detection for MIMO-SC Systems	p. 204
Spatial Multiplexing: OFDM	p. 210
Frame Structure	p. 211
Results	p. 213
Antenna Correlation	p. 213
Channel Estimation	p. 217
Data Multiplexed Pilots	p. 218
Frame Structure	p. 218
Receiver Structure	p. 218
Channel Estimation	p. 219
Implicit Pilots	p. 220
Frame Structure	p. 220
Receiver Structure	p. 220
Channel Estimation	p. 223
Simulation and Numerical Results	p. 223
Results	p. 224
Multiresolution Techniques for MBMS	p. 229
Introduction to Multiresolution Using WCDMA and OFDMA	p. 229
Objectives and Requirements	p. 232
Evaluation Methodology and Simulation Assumptions	p. 233
LLS Design	p. 233
Radio Access Network (RAN) SLS	p. 234
System-Level Performance Results	p. 239
WCDMA Broadcast Multiresolution Results	p. 239
Multicode Results	p. 239
Hierarchical Modulation Results	p. 240
MIMO Results	p. 242
Conclusions	p. 245
OFDMA Broadcast Multiresolution Results	p. 246
Frequency Reuse 1/3 Results	p. 246
Frequency Reuse 1 Results	p. 254
Summary and Conclusions	p. 257
WCDMA Channel Model	p. 261
Channel Characterization	p. 261
Channel Model Construction	p. 264
References	p. 269
Index	p. 283
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