数据传输系统中CRC校验的DSP算法实现

循环冗余校验码是一种重要的循环码,编码和解码方法简单,容易实现,检错能力强,误判概率几乎为零,是一种效率极高的差错控制方法,可以满足通信系统可靠传送信息的要求,在测控及数据通信中得到了非常广泛的应用。详细介绍了循环冗余校验的编解码原理,分析了用DSP实现CRC的合理性,最后给出了根据校验原理实现的设计思想及流程图,具有一定的实用价值。

DSP Implementation of CRC Algorithm in Data Communication System

Cyclic redundancy check code is a very important cyclic code,the coding and decoding methods are simple,easy to realize.It is strong to detect error,the probability of misjudging is nearly zero.It is a method with extremely high efficiency in controlling errors,which can fulfill the requirement of reliable information transmission in communication systems.It has got very extensive application in observing and controlling and data communication.This paper introduces the encoding and decoding principle of CRC in detail,analyzes the feasibility of CRC by DSP,and gives out the design proposal and flow chart according to the principle,which is very useful in applications.