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http://dx.doi.org/10.5394/KINPR.2012.36.8.631

A Study on Efficient Packet Design for Underwater Acoustic Communication  

Park, Tae-Doo (Dept. of Radio Science Engineering, Korea Maritime University)
Jung, Ji-Won (Dept. of Radio Science Engineering, Korea Maritime University)
Publication Information
Journal of Navigation and Port Research / v.36, no.8, 2012 , pp. 631-635 More about this Journal
Abstract
Underwater acoustic communication has multipath error because of reflection by sea-level and sea-bottom. The multipath of underwater channel causes signal distortion and error floor. In this paper, in order to design an efficient packet structure, we employ channel coding scheme and phase recovery algorithm. For channel coding scheme, half rate LDPC channel coding scheme with N=1944 and K=972 was used. Also, decision directed phase recovery was used for correcting phase offset induced by multipath. Based on these algorithms, we propose length of data for optimal packet structure in the environment of oceanic experimentation.
Keywords
underwater channel; phase tracking algorithm; ldpc code; qef; underwater acoustic communication;
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