提高电力线通信可靠性的码距自适应信道编码

Improvement of PLC reliability by using adaptive code-distance channel coding

在分析窄带接收器信号累加原理基础上,提出了基于软累加器的最大码距FEC信道编码算法,以提高电力线通信的可靠性,并与ARQ重发判决算法进行了纠错性能和资源消耗对比。在满足可靠性的前提下,提出根据接收器的反馈结果间接估计信道质量、并适应性地调整码距的方法,以提高编码后的有效通信速率,文中还给出了实验结果。

By analyzing the signal accumulation theory of narrow-band receptors, the paper puts forward a channel coding algorithm in order to improve the reliability of PLC. The algorithm uses the maximum code distance FEC which is based on soft accumulator, and is compared with the algorithm of ARQ packet retransmission on the performance of their error correction and resource consumption. Under the precondition of network reliability, it proposes a method of adaptively adjusting code distance through the receptor＇s feedback for estimating channel quality so as to improve the communication rate. The experiment results are also given in the paper.