基于TMS320C55X的级联码在电力线载波通信中的应用  

Application of concatenated codes based on TMS320C55x in power line communication

作　　者：王仲宇[1] 张浩[1] 郭经红[1] 

机构地区：[1]国电自动化研究院,江苏南京210003

出　　处：《电力系统通信》2005年第7期9-11,14,共4页Telecommunications for Electric Power System

摘　　要：如何克服电力线信道的严重干扰一直是困扰电力载波机设计者的难题。文章提出了一种电力载波机的设计方案,其中不仅采用正交频分复用技术来克服多径效应和频率选择性衰减,而且引入级联码来消除随机误码和突发干扰。文中对由RS码+交织+卷积码构成的级联码在电力线载波通信中的应用进行了重点研究,详细讨论了如何在TMS320C55X数字信号处理器上实现该级联码。仿真实验表明,该级联码能够在有相当多误码的情况下实现正确译码。How to overcome the serious interference of the power line channel is a difficult problem, which is beset with troubles by the power line communication developers. In this paper, a power line communication scheme is proposed. Here not only Orthogonal Frequency Division Multiplexing is used to solve the multi-path interference and frequency selective fading, but also concatenated codes are used to reduce the random error and burst interference. This paper is concentrated on the power line communication application of concatenated code comprised of Reed Solomon codes, interleaving and convolutional codes. And how to develop this concatenated code in TMS320C55X digital signal processor is discussed in detail. The simulation experiments show that this code works well while meets a number of errors.

关 键 词：级联码 电力线载波通信 RS码 交织 卷积码 维特比算法 

分 类 号：TN915.853[电子电信—通信与信息系统]