循环冗余校验算法分析和实现

Research of CRC Arithmetic in Software and Hardware

在网络中传输报文时,噪声干扰或传输中断等因素往往使接收端收到的报文出现错码。为了及时可靠地把报文传输给对方并有效地检测错误,需要采用差错控制。循环冗余校验CRC(Cyclic Redun-dancy Check)是由分组线性码分支而来,其主要应用是二元码组。循环冗余校验CRC编码简单且误判概率很低,在通信系统中得到了广泛的应用。文中详细介绍了循环冗余校验CRC的差错控制原理及其实现方法。

Noise and disturb ofen made the message mistaking when transferring it in network.. In order to transfer the message in time and reliably and check the inaccurate message, the control of the mistake is must need. The control principle of CRC （Cyclic Redundancy Check）was introduce particularly in the paper, the hardware circuit and the software realization of CRC （Cyclic Redundancy Check）was more research.