There are no commonly-agreed mathematical models for the input - output relationship of underwater acoustic channels. For each path in a time-varying multipath channel within a short period of time (e.g., one short data block), this paper proposes to use one polynomial to approximate the amplitude variation and another polynomial ...Download Now
Underwater acoustic orthogonal frequency division multiplexing OFDM enables simple frequency domain equalization, but its performance is often limited by InterCarrier Interference ICI that is induced by channel variation, in addition to the ambient noise. As the signal itself, the variance of the ICI is frequency dependent as the transmitter often ...Download Now
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