误码率与归一化信噪化的函数曲线、可以表征在介质传输系统中，线路噪声所引起的误码增值。
Error multiplication caused by channel noise in eletric transmission system can be demmonstrated by signal to noise ratio between error rate function curve.
合理选择线路码型有利于提高信号传输速率，减少误码率。
It is good to raise transmissibility of signal to select reasonable line code, and to reduce error code.
在计算机网络通信中，为了降低数据通信线路传输的误码率，可以采用一种差错检测控制———循环冗余码校验(CRC)。
In this paper, it studies one of the error-check controls of the communications of computers network-Cyclic Redundancy check (CRC).
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