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http://dx.doi.org/10.7776/ASK.2014.33.1.048

Mitigation of Inter-Symbol Interference in Underwater Acoustic Communication Using Spatial Filter  

Eom, Min-Jeong (한국해양대학교 해양공학과)
Park, Ji-Sung (한국해양대학교 해양공학과)
Ji, Yoon-Hee (한국해양대학교 해양공학과)
Kim, J.S. (한국해양대학교 해양공학과)
Publication Information
The Journal of the Acoustical Society of Korea / v.33, no.1, 2014 , pp. 48-53 More about this Journal
Abstract
The underwater acoustic communication (UAC) is characterized by doubly spread channel. It is included in the time-variant doppler shift and delay-time spreads due to multiple paths. To compensate such distorted signals, various techniques including time-reversal processing, spatial diversity, phase estimator, and equalizer are being applied. In this paper, a spatial filter based on the beamforming is proposed as a method to mitigate such inter-symbol interferences that are generated in time-varying multipath channels. The proposed technique realizes coherent communications by steering the direction of the desired signals and improves the performance of UAC by increasing the signal-to-interference plus noise ratio using the array gain.
Keywords
Underwater acoustic communication; Spatial filter; Beamforming; Coherent communication; ISI mitigation; Bit error rate;
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Times Cited By KSCI : 2  (Citation Analysis)
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