宽带电力线载波系统中的信道编码技术研究

摘要

电力线载波通信具有网络覆盖范围广、接入方便的特点,但电力线不是一种理想的传输信道,其信道传输环境恶劣,不但具有阻抗匹配和频率选择性衰减的问题,而且还存在着严重的噪声和干扰.长期的实践证明:对抗恶劣电力线信道的最有效手段是信道编码技术,HomepulgAV标准中给出了双二元Turbo编码构造以及码内交织方案,但这种编码已经被国外通信设备商申请了专利,如果照搬恐会引起知识产权纠纷,因而给出了一种新的Turbo码交织方案,其性能比HomeplugAV标准略有提升,复杂程度完全相同,并给出仿真结果.%With its coverage widely and access easily characteristic,PLC technology has been popularized in meters reading and home automation domains,but the channel of PLC is not perfect,there are critical power noise and all kinds interference existed.Long time practice proved that the best way to overcome the problem of PLC channel is channel coding.In HomeplugAV standard give out a double binary Turbo coding structures,but for commercial reason,this Turbo interleave structure has become the patent product of oversea telecommunication equipment manufacturer,if use this Turbo direcdy,maybe cause intellectual property disputes in future.In this paper,we give out a different Turbo interleave patterns,which performance is better than HomeplugAV with the same complexity level,then give out the simulation results.