摘要
先分析了RS码的编解码原理,RS(204,188)码可以纠错8位的随机误码,适用于DVB标准数字电视的信道纠错。通过Matlab软件获取了RS(204,188)的编码。解码主要包括求伴随子、求错误位置多项式和关键等式、错误位置、错误值,最后完成纠错。其中最关键的就是求错误位置多项式和关键等式,常有BM算法及欧几里德算法。设计时采用Verilog语言设计、ISE9.2集成工具、FIFO实现解码的连续。重点介绍了欧几里德算法求错误位置多项式和关键等式、各模块的硬件实现结构以及具体的实现,验证时随机设取了8个误码,经过解码后恢复了原码。
The paper begins with an analysis of the RS code principles. RS（204, 188） are capable of eight random error correcting which is applicable in DVB standard digital television channel error correction. The RS （204, 188） encoding is obtained by using MATLAB software, which involves getting error location polynomial and the key equation, error location, error value, and finally the completion of error correction. The most critical procedure is the solution of the wrong location and the key polynomial equation, which involves BM algorithm and Euclidean algorithm. This design is based on Euclidean algorithm using VERILOG language and FIFO continuous implementation of the decoder. The emphasis is laid on the Euclidean algorithm for error location polynomial and the key equation, the hardware implementation of the module structure and their specific implementation. In the verification, the decoder gets the right code from a random set of eight check errors.
出处
《电子科技》
2009年第12期103-106,共4页
Electronic Science and Technology
