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A scheme of bidirectional relaying underwater acoustic communication is presented in this paper, which adopted two-way (on-frequency) amplify and forward relaying, is an emerging technology that allows doubling of system spectral efficiency. However, underwater acoustic channel is of serious multipath interference, which leads to great challenges to avoid the interference from mutual channel user...
Partial FFT demodulation is a newly-emerging technique to mitigate the inter-carrier interference (ICI) of orthogonal frequency division multiplexing (OFDM) systems over time-varying underwater acoustic channels. In this letter, we extend the partial FFT demodulation method for a single-input single-output (SISO) configuration to the multiple-input multiple-output (MIMO) case. By assuming no channel...
High speed forms of transportation as airplane, maglev, and low-earth-orbit satellite, arising great demand of high dynamic communication, which reveals the insufficiency of channel estimation without reliable doppler compensation. This paper proposes to use energy sorting to eliminate small component in time domain channel estimation, and adopt doppler shift to further revised the channel parameter...
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