At the present time, in the many acoustic communication systems, spectrum communication of is catholic concern.
目前采用的多种水声通信体制中, 扩频通信也因其独有的特性备受关注.
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The main reasons of bit - error - rate in underwater acoustic communication are serious multipath fading and Doppler shift.
严重的多途衰落、多普勒频偏是水声通信中引起误码的主要原因.
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The characteristics of underwater acoustic communication are different from wireless communication because of different propagation media.
由于传输介质的不同,使得水声通信具有一些有别于电磁波通信的特点.
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