Iterative Multiuser Detection and Decoding with Spatially Coupled Interleaving

Author

Takeuchi, Ken ; Horio, Shuhei

Author_Institution

Dept. of Commun. Eng. & Inf., Univ. of Electro-Commun., Chofu, Japan

Volume

2

Issue

6

fYear

2013

fDate

41609

Firstpage

619

Lastpage

622

Abstract

Spatially coupled (SC) interleaving is proposed to improve the performance of iterative multiuser detection and decoding (MUDD) for quasi-static fading multiple-input multiple-output systems. The linear minimum mean-squared error (LMMSE) demodulator is used to reduce the complexity and to avoid error propagation. Furthermore, sliding window MUDD is proposed to circumvent an increase of the decoding latency due to SC interleaving. Theoretical and numerical analyses show that SC interleaving can improve the performance of the iterative LMMSE MUDD for regular low-density parity-check codes.

Keywords

MIMO communication; demodulators; fading channels; iterative decoding; least mean squares methods; multiuser channels; multiuser detection; parity check codes; LMMSE demodulator; SC interleaving; complexity reduction; decoding latency; error propagation; iterative LMMSE MUDD; iterative multiuser detection-decoding; linear minimum mean-squared error demodulator; low-density parity check codes; quasistatic fading multiple-input multiple-output systems; sliding window MUDD; spatially-coupled interleaving; Couplings; Decoding; Demodulation; Iterative decoding; MIMO; Multiuser detection; Spatial coupling; density evolution; iterative multiuser detection and decoding; multiple-input multiple-output (MIMO) systems; sliding window decoding;

fLanguage

English

Journal_Title

Wireless Communications Letters, IEEE

Publisher

ieee

ISSN

2162-2337

Type

jour

DOI

10.1109/WCL.2013.082713.130465

Filename

6587461