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http://dx.doi.org/10.7776/ASK.2008.27.6.286

The Analysis about Channel Code Performance of Underwater Channel  

Bae, Jong-Tae (한국해양대학교 전파공학과)
Kim, Min-Hyuk (한국해양대학교 전파공학과)
Choi, Suk-Soon (한국해양대학교 전파공학과)
Jung, Ji-Won (한국해양대학교 전파공학과)
Chun, Seung-Yong (국방과학연구소)
Dho, Kyeong-Cheol (국방과학연구소)
Abstract
Underwater acoustic communication has multi path error because of reflection by sea-level and sea-bottom. The multipath of underwater channel causes signal distortion and error floor. In this paper, we consider the use of various channel coding schemes such as RS code, convolutional code, cross-layer code and LDPC code in order to compensate the multipath effect in underwater channel. As shown in simulation results, characteristic of multipath error is similar to that of random error, so interleaver has little effect for error correcting. For correcting of error floor by multipath error, it is necessary strong channel codes like LDPC code that is similar to Shannon's limit. And the performance of concatenated codes including RS codes has better performance than using singular channel codes.
Keywords
Underwater channel; LDPC code; Turbo code; Concatenated code; DVB-S2M Cross layer;
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