串行级联LDGM编码MIMO系统设计

2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications Pub Date : 2006-07-02 DOI:10.1109/SPAWC.2006.346411

F. J. Vázquez-Araújo, M. Gonzales-Lopez, L. Castedo, J. Garcia-Frías

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引用次数: 10

摘要

串行串联低密度发生器矩阵(SCLDGM)编码由于编码和解码过程的计算成本低，是一种接近单输入单输出(SISO)信道容量的有吸引力的方案。本文研究了用于多输入多输出(MIMO)无线通信信道空间复用的SCLDGM码的设计。采用基于外部信息传递(EXIT)函数跟踪和积算法(SPA)解码行为的优化程序构建了SCLDGM码。在不同天线配置下的结果表明，优化后的SCLDGM编码比编码复杂度相似的标准低密度奇偶校验(LDPC)编码表现出更好的性能

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Design of Serially-Concatenated LDGM Coded MIMO Systems

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

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来源期刊

2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications

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