Performance Analysis of an AMC System with an Iterative V-BLAST Decoding Algorithm

Sangjin RYOO, Kyunghwan LEE, Intae HWANG

Department of Electronics & Computer Engineering, Chonnam National University, Korea.
Department of Electronics Engineering, Chonnam National University, Korea.
T&M Algorithm Research, Innowireless, Inc., Korea.

DOI: 10.4236/ijcns.2008.12015                

Abstract

In this paper, the iterative Vertical-Bell-lab Layered Space-Time (V-BLAST) decoding algorithm of an Adaptive Modulation and Coding (AMC) system is proposed, and the corresponding MIMO scheme is analyzed. The proposed decoding algorithm adopts iteratively extrinsic information from a Maximum A Posteriori (MAP) decoder as an a priori probability in the two decoding procedures of the V-BLAST scheme of ordering and slicing in an AMC system. Furthermore, the performance of the proposed decoding algorithm is compared with that of a conventional V-BLAST decoding algorithm and a Maximum Likelihood (ML) decoding algorithm in the combined system of an AMC scheme and a V-BLAST scheme. In this analysis, each MIMO schemes are assumed to be parts of the system for performance improvement.

Keywords

Iterative V-BLAST Decoding, MAP Decoder, AMC, STD, Turbo Code

Conflicts of Interest

The authors declare no conflicts of interest.

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