Design of Serially-Concatenated LDGM Coded MIMO Systems

Author

Vazquez-Araujo, FJ ; Gonzales-Lopez, M. ; Castedo, L. ; Garcia-Frias, J.

Author_Institution

Dept. de Electron. y Sistemas, Univ. de A Coruna

fYear

2006

fDate

2-5 July 2006

Firstpage

1

Lastpage

5

Abstract

Serially-concatenated low-density generator matrix (SCLDGM) codes are an attractive scheme to approach the capacity of single input single output (SISO) channels due to the low computational cost of the encoding and decoding procedures. In this paper we investigate the design of SCLDGM codes for the spatial multiplexing over multiple input multiple output (MIMO) wireless communication channels. SCLDGM codes are constructed using an optimization procedure based on tracking the decoding behaviour of the sum-product algorithm (SPA) using extrinsic information transfer (EXIT) functions. We present results for different antenna configurations, showing that the optimized SCLDGM codes exhibit better performance than standard low density parity check (LDPC) codes with similar encoding complexity

Keywords

MIMO communication; channel capacity; concatenated codes; decoding; multiplexing; parity check codes; wireless channels; LDPC codes; decoding; extrinsic information transfer functions; low density parity check codes; low-density generator matrix; multiple input multiple output wireless communication channels; serially-concatenated LDGM coded MIMO systems; single input single output channels; spatial multiplexing; sum-product algorithm; Block codes; Collaborative work; Decoding; Diversity methods; MIMO; Parity check codes; Sparse matrices; Sum product algorithm; Transmitting antennas; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Advances in Wireless Communications, 2006. SPAWC '06. IEEE 7th Workshop on

Conference_Location

Cannes

Print_ISBN

0-7803-9710-X

Electronic_ISBN

0-7803-9711-8

Type

conf

DOI

10.1109/SPAWC.2006.346411

Filename

4153928