Rs Encoding And Decoding In Software Radio Dsp Implementation

Reed-Solomon (RS) code is an important cyclic code. It is a powerful error correcting code, with simply encoding and mature effective decoding arithmetic. It is widely applied to varied wireless communication systems. RS code decoding needs some processing time, so using High-Speed Digital Signal Processing (DSP) can improve running speed of RS code encoding and decoding program., and realize to real-time processing. The DSP developing tool is Visual DSP++ 2.0 provided by AD Inc. It is an Integrated Development and Debugger Environment (IDDE) , which supports a series of DSP devices of AD Inc. Program in Assembly language is more efficient than program in C language, and more suited to real-time processing system.In this paper, we simply introduce the RS code structure, analyze RS code encoding/decoding arithmetic, realize fast operation in finity field by using look-up tables method, and use Berlekamp-Messey algebiaic decoding algorithm. This paper introduces Visual DSP ++2.0 Integrated Deveolpment and Debugger Environment, points out the notice matter. We accomplish RS code encoding/decoding arithmetic realized in ADSP21161 (SHARC series) in whole Assembly language. In the end, RS encoding needs 7 MIPS, RS decoding needs 26 MIPS. The data speed of RS encoding and RS decoding is 1.5 Mbps and 378 kbps.