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The Experimental Verification of Adaptive Equalizers with Phase Estimator in the East Sea  

Kim, Hyeon-Su (인하대학교 전자공학부)
Choi, Dong-Hyun (인하대학교 전자공학부)
Seo, Jong-Pil (인하대학교 전자공학부)
Chung, Jae-Hak (인하대학교 전자공학부)
Kim, Seong-Il (국방과학연구소)
Publication Information
The Journal of the Acoustical Society of Korea / v.29, no.4, 2010 , pp. 229-236 More about this Journal
Abstract
Phase coherent modulation techniques in underwater acoustic channel can improve bandwidth efficiency and data reliability, but they are made difficult by time-varying intersymbol interference. This paper proposes an adaptive equalizer combined with phase estimator which compensates distortions caused by time-varying multipath and phase variation. The experiment in the East sea demonstrates phase coherent signals are distorted by time-varying multipath propagation and the proposed scheme equalizes them. Bit error rate of BPSK and QPSK are 0.0078 and 0.0376 at 300 meter horizontal distance and 0.0146 and 0.0293 at 1000 meter respectively.
Keywords
Underwater Acoustic Communications; Adaptive Equalizer; Phase Coherent; Phase-Lock Loop; Intersymbol Interference;
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Times Cited By KSCI : 1  (Citation Analysis)
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