Research on high speed OFDM underwater acoustic communication based on TPC

The characteristics of underwater acoustic channel is strong multipath, severe Doppler and limited bandwidth. OFDM modulation has good ability in anti multipath and Turbo Product Codes(TPC) has excellent performance in a high code rate, We make full use of their advantages and designed an OFDM underwater acoustic communication system based on TPC. Using the BELLHOP simulation model to get the approximate actual response of the shallow underwater acoustic channel with strong multipath characteristics and large time delay. Take our system for a large number of data simulation under this kind of channel, we obtained the curve of error bit rate, the result show that the system has excellent performance in multi-path and Doppler channel.