Simulation shows co-channel interference and maximum multi-path delay spread have significant impact on the BER performance and PDMRC gives the best performance in most common environment.

仿真表明同信道干扰与最大多径延迟扩展对系统性能影响很大，在通常情况下采用PDMRC具有最好的性能。

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This produces a maximum path delay, which is the delay between two DTEs of 400 meters, plus the repeater delay of one repeater instead of four repeaters.

这样就产生了一个最大路径迟延，也就是两个DTE之间的400米迟延，另外一个中继器的迟延取代了四个中继器的迟延。

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