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什么是码间串扰 ISI? 码间串扰的主要原因是什么?OFDM为何可以减小码 ...
什么是码间串扰? 为了更高效地使用现有的有限带宽资源,复合调制信号在时域中扩展,连续符号可能会重叠,造成码间串扰 (Inter-symbol Interference, ISI)。ISI 码间串扰会导致接收机对信号的解读出错。码间串扰就是前后码元由于信道中噪声的影响造成前一码元的拖 ...
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