...信号带宽小于信道的相关带宽， 因此每个子信道上的频率选择性衰落是平坦的，大大消除了符号间干扰（Inter- Signal Interference， ISI）。 2．2．1多载波调制技术 针对信号在无线信道的传播特点，人们提出了MCM技术。
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The received signal is often corrupted badly by inter-symbol interference in the multipath fa- ding wireless channel circumstance.
数字通信系统中多径衰落的无线信道环境通常会使接收信号受到严重的码间干扰。
The problems mainly exhibit to be multi-path propagation in the wireless fading channel, signal fading caused by the scattering and Inter-Symbol Interference caused by the long multi-path time delay.
其中主要为无线衰落信道中的多径传播和散射引起的信号衰落，以及大的多径时延而引起的符号间干扰。
In wireless communication system, Inter-symbol Interference is serious and signal is distorted extremely because of fading channel resulted in by the effect of multipath.
在无线通信系统中，由于多径效应常常引起信道衰落，直接结果是码间干扰非常严重。
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