【摘要】 研究了LDPC编码中继协作通信系统及其编码协作系统目的点译码器基于双层Tanner图的LDPC联合迭代译码算法,通过在目的点接收机引入算术/几何平均信噪比的概念,将中继编码协作系统转换成等效的易于分析的点对点传输模型,利用点对点传输中的原理研究较复杂编码中继协作系统的性能。理论分析和模拟结果表明,在相同的条件下LDPC中继编码协作系统及其等效点对点编码传输系统的性能非常接近,从而证实了本文所提出的等效点对点传输模型的合理性,以及基于双层Tanner图的LDPC联合迭代译码算法的有效性。更多还原

【Abstract】 LDPC-coded relay cooperation and its joint iterative decoding based on the bi-layer Tanner graph were investigated.The coded relay cooperation becomed an equivalent and relatively simple point-to-point transmission model by introducing the notation of average arithmetic/geometric SNR for the receiver in the destination,which could be employed to perform the further study on more complex coded relay cooperations.Both LDPC-coded relay cooperation and its equivalent point-to-point model have almost the same performance by theoretical analysis and numerical simulation,which proves the validity of the introduced equivalent model and the joint iterative decoding based on bi-layer Tanner graph.更多还原