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首页MIMO基础,包括包括MIMO的信号模型和各种经典的算法
MIMO基础,包括包括MIMO的信号模型和各种经典的算法

MIMO的入门级资料,包括MIMO的信号模型和各种经典的算法。内容比较全面而且详细。基本的STTC,STBC编码等都有,还有相应的译码技术。
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The Provision of an Initial Study
of Multiple In Multiple Out
Technology
Section 1: Executive Summary
Professor Sana Salous
Contract: AY 4252 (510010100)

1
ABSTRACT
This report contains an executive summary of the literature search carried out under
contract number AY 4252 (510010100) to provide an initial study of multiple in
multiple out technology. The summary presented here gives an overview of MIMO
and the potential capacity gains it provides, the factors that limit this capacity, and
reported MIMO measurements and models. Also a number of topics have been
identified for further study.
The detailed summary of all the reviewed papers, book chapters, presentations and
lecture notes are included separately in the document entitled ‘Literature Search’.

2
List of Symbols
C Channel capacity
H Channel matrix
I identity matrix
N, n, n
t
Number of receive antennas
M, m, n
r
Number of transmit antennas
R correlation matrix
r correlation coefficient
l wavelength
l
i
Eigenvalue
s
i
Singular value
r Signal to noise ratio
e
i
Optimum value for waterfilling

3
GLOSSARY OF TERMS
AOA Angle Of Arrival
ASIC Application Specific Integrated Circuit
AWGN Additive White Gaussian Noise
BLAST Bell Laboratories Layered Space Time
CDMA Code Division Multiple Access
CLR Correlated Low Rank
DOA Direction of Arrival
DOD Direction of Departure
DOF Degrees of Freedom
DSP Digital Signal Processing
ED Effective Dimensionality
EDGE Enhanced Data rate for Global Evolution
EDOF Effective Degrees Of Freedom
FDD Frequency Division Duplex
GSM Groupe Speciale Mobile or Global System for Mobile
Communication
HDTV High Definition Television
HF High Frequency
H-S Hybrid Selection
iid independent identically distributed
LOS Line of Sight
MEA Multi-Element Array
MIMO Multiple Input Multiple Output
MISO Multiple Input Single Output
MMSE Minimum Mean Square Error
NLOS Non Line Of Sight
OFDM Orthogonal Frequency Division Multiplexing
OSIC Ordered Successive Interference Cancellation
pdf probability density function
QAM Quadrature Amplitude Modulation
Rx Receiver
SIMO Single Input Multiple Output
SNR Signal to Noise Ratio
SISO Single Input Single Output
Tx Transmitter
UHR Uncorrelated High Rank
ULA Uniform Linear Array
ULR Uncorrelated Low Rank
UMTS Universal Mobile Telecommunication System
WLAN Wireless Local Area Network
WPMC Wireless Personal Multimedia Communication
3G Third Generation
4G Fourth Generation

4
Contents Page
1. Introduction 5
2. Basic concept and background 5
3. Capacity equations 7
3.1 Basic capacity expressions 7
3.2 Capacity limitations 12
3.2.1 Effect of correlation 12
I Correlation effects without channel model 13
II Correlation effects with channel model 15
(a) Double ring model 18
(b) Single ring model 19
(c) COST 259 models 20
3.2.2 Number of scatterers 20
3.2.3 Keyholes 20
3.2.4 Free space propagation 21
3.2.5 Rician channels 22
4. MIMO Measurements and application to system design 23
5. Conclusion 25
6. Topics for further study 26
List of tables
Table 1. Categorisation of reviewed papers on MIMO technology 27
Table 2. Summary of MIMO techniques and measurements 28
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