MIMO-OFDM Wireless Communications with MATLAB ® Yong Soo Cho | Jaekwon Kim Won Young Yang | Chung G. Kang Chapter 11. Signal Detection for Spatially Multiplexed

MIMO-OFDM WirelessCommunicationswith MATLAB®

Yong Soo Cho | Jaekwon Kim

Won Young Yang | Chung G. Kang

Chapter 11. Signal Detection for Spatially Multiplexed MIMO Systems

Page 2MIMO-OFDM Wireless Communications with MATLAB®

Yong Soo Cho, Jaekwon Kim, Won Young Yang, and Chung G. Kang© 2010 John Wiley & Sons (Asia) Pte Ltd


11.1 LINEAR SIGNAL DETECTION

- 11.1.1 ZF Signal Detection

- 11.1.2 MMSE Signal Detection

11.2 OSIC SIGNAL DETECTION

11.3 ML SIGNAL DETECTION

11.4 SPHERE DECODING METHOD

11.5 QRM-MLD METHOD

11.6 LATTICE REDUCTION-AIDED DETECTION

- 11.6.1 Lenstra-Lenstra-Lovasz (LLL) Algorithm

- 11.6.2 Application of Lattice Reduction



Chapter 11. Signal Detection for Spatially Multiplexed MIMO System

11.7 SOFT DECISION FOR MIMO SYSTEMS

- 11.7.1 Log-likelihood-Ratio (LLR) for SISO Systems

- 11.7.2 LLR for Linear Detector based MIMO System

- 11.7.3 LLR for MIMO System with a Candidate Vector Set

- 11.7.4 LLR for MIMO System using a Limited Candidate Vector Set




11.1 Linear Signal Detection



11.1 Linear Signal Detection



11.1.1 ZF Signal Detection



11.1.1 ZF Signal Detection



11.1.2 MMSE Signal Detection












11.2 OSIC Signal Detection









11.3 ML Signal Detection



11.4 Sphere Decoding Method






















Multiplications Divisions Square roots

16 0 0

in (11.33) 14 0 0

Step 1 0 1 1

Step 2-4 each 1 2 1

update 1 0 0

1ˆ ( )x H y

2SDR

2SDR



11.5 QRM-MLD Method



11.5 QRM-MLD Method



11.5 QRM-MLD Method



11.6 Lattice Reduction-Aided Detection



11.6.1 Lenstra-Lenstra-Lovasz (LLL) Algorithm





















11.6.2 Application of Lattice Reduction



11.6.2 Application of Lattice Reduction



11.7 Soft Decision MIMO Systems11.7.1 Log-Likehood-Ratio (LLR) for SISO Systems



11.7.1 Log-Likehood-Ratio (LLR) for SISO Systems



























11.7.2 LLR for Linear Detector-Based MIMO System









11.7.3 LLR for MIMO System with a Candidate Vector Set












11.7.4 LLR for MIMO System Using a Limited Candidate Vector Set







Multiplication

FFT size 64

CP size 16

Antenna configuration 4 x 4

Packet length 10 OFDM symbols

Symbol mapping 16-QAM

Channel coding

Convolutional coding-Rate: 1/2

-Constraint length: K=7-Generating polynomials: [1001111] and [1101101].









Appendix 11.A Derivation of Equation (11.23)



Appendix 11.A Derivation of Equation (11.23)

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MIMO-OFDM Wireless Communications with MATLAB ® Yong Soo Cho | Jaekwon Kim Won Young Yang | Chung G. Kang Chapter 11. Signal Detection for Spatially Multiplexed