Title :
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
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;
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
DOI :
10.1109/SPAWC.2006.346411
