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Compressed sensing is a topic that has recently gained much attention in high-speed underwater acoustic (UWA) communications. Combined the MIMO communication system with OFDM technology, they can realize high-speed data communication over UWA channels and overcome the fading problem efficiently. In this paper performance analysis of compressed sensing (CS) channel estimation algorithms for underwater...
In this paper, a new design criterion for quasi-orthogonal space time block codes is proposed for four transmit anntenas and four receivers MIMO communication system when it experiences the Rayleigh fading channel. Based on the design criterion, an improved design of QOSTBC(Quasi Orthogonal Space Time Block Code) for coherent channal interference is proposed that avoids repeated transmission of symbols...
Underwater acoustic (UWA) channels exhibit time-varying fading statistics, thus a coded modulation scheme optimally designed for a specific model (e.g., Rayleigh fading) will perform poorly when the channel statistics change. Exploiting diversity via coded modulation is a robust approach to improve the reliability of the acoustic link in a variety of channel conditions. Herein, protocols coupled with...
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