Capacity of MIMO channels ………………………….. Chapter 4 Diversity Chapter 3 Channel model Chapter 2 Introduction Chapter 1 INDEX

I

INDEX

Chapter 1

Introduction

1.1 Overview of the thesis ……….. 2

Chapter 2

Channel model

2.1 SISO channel model ………. 4

2.1.1 Frequency-flat Rayleigh fading SISO channel model ………… 7

2.2 MIMO channel model………... 8

2.2.1 Physical scattering model ………... 9

2.2.2 Frequency-flat Rayleigh fading MIMO channel model ………. 12

Chapter 3

Diversity

3.1 Diversity gain ………... 14

3.2 Receive only diversity………... 17

3.3 Transmit only diversity………. 23

3.4 Combined transmit and receive diversity………. 26

Chapter 4

Capacity of MIMO channels………..

4.1 Multiplexing gain ………. 29

4.2 Capacity of a frequency-flat deterministic MIMO channel……….. 32

II

4.4 Capacity of a frequency-selecitve fading MIMO channel..……….. 39

Chapter 5

OFDM

5.1 OFDM modulation ……….. 41

5.1.1 Guard interval and its implementation ………. 46

Chapter 6

Spatial Multiplaxing………...

6.2 Design of detection algorithms………. 54

6.2.1 Maximum likelihood detector………. 55

6.2.2 Decorrelating detector………. 56

6.2.3 Minimum mean square error detector………. 57

6.2.4 Bell labs layered space-time……… 59

6.2.5 Ordered BLAST……….. 60

6.3 Simulation results……….. 62

6.3.1 System parameters………... 62

6.3.2 Performance assessment……….. 62

Chapter 7

Space-time diversity coding………...

7.1 System model ………... 70

III

7.1.2 Receiver structure……… 72

7.1.3 Channel model………. 74

7.2 Space-time block codes………. 76

7.2.1 Design Criteria………. 76

7.2.2 Alamouti code………. 79

7.2.3 Orthogonal space-time block codes... ………. 81

7.2.4 Quasi orthogonal space-time block codes………... 88

7.2.5 Rotated quasi orthogonal space-time block codes ……….. 91

7.3 Cyclic delay diversity……… 92

7.4 Simulation result………... 96

7.4.1 System parameters……….……….. 96

7.4.2 Performance assessment……….. 97