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High-rate phase coherent acoustic communication systems generally require large arrays to obtain spatial diversity. Large arrays may not be suitable for small underwater platforms such as underwater unmanned vehicles (UUVs). In this paper, acoustic communication utilizing a compact array with closely spaced elements was demonstrated using the data collected during the August 2010 lake experiment....
Due to the underwater acoustic channel is more complexity than the wireless communication channel. It has more multipath interference and larger attenuation, so the rate of transmission in the underwater acoustic channel is lower and the probability of error is larger. Aim to those problems, we proposed a bidirectional relaying underwater acoustic communication system and analysis the performance...
Serious mutual channel interference and large time delays in underwater acoustic MIMO-OFDM communication systems usually lead to inferior performance and high data error. Also the time varying characteristic of underwater acoustic channels brings great challenges to precise channel estimation. To solve these problems, this paper proposes an iterative channel estimation and equalization algorithm for...
Underwater acoustic channel is assumed to be one of the most challenging communication channels because of its variable multipath effect. To reduce the receiver complexity, we proposed a second order cone optimized underwater acoustic channel frequency domain equalization (SOC-UAFDE), which adjust the equalization coefficients by minimum the mean square error of the frequency domain equalization algorithm...
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