Improving the performance of SM-MIMO/BICM-ID systems with LLR distribution matching

Author

Jia, Qinghua ; Kim, Yongsang ; Seol, Changkyu ; Cheun, Kyungwhoon

Author_Institution

Div. of Electr. & Comput. Eng., Pohang Univ. of Sci. & Technol. (POSTECH), Pohang, South Korea

Volume

57

Issue

11

fYear

2009

Firstpage

3239

Lastpage

3243

Abstract

In this paper, a distribution matching technique is proposed to process the extrinsic information produced by practical multiple-antenna detectors with iteratively demodulated, bit-interleaved coded modulation (BICM-ID). It is shown that significant gains may be achieved by appropriately processing the extrinsic information generated by practical multiple-antenna detectors before feeding it to the channel decoder. The validity of the proposed matching technique is shown via simulation results applied to Turbo-coded BICM-ID systems using (QRD)-M and list sphere detectors.

Keywords

MIMO communication; antenna arrays; interleaved codes; turbo codes; SM-MIMO systems; bit-interleaved coded modulation; channel decoder; distribution matching technique; list sphere detectors; log-likelihood ratio matching; multiple-antenna detectors; spatially-multiplexed multiple-input multiple-output; turbo codes; Concatenated codes; Detectors; Fading; Gaussian distribution; Information technology; Interleaved codes; Iterative decoding; MIMO; Modulation coding; Turbo codes; Log-likelihood ratio (LLR) matching, bitinterleaved coded modulation (BICM), iterative detection, spatially-multiplexed multiple-input multiple-output (MIMO), Turbo codes, fading channels;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOMM.2009.11.080029

Filename

5336844