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http://dx.doi.org/10.5916/jkosme.2009.33.5.738

The Study about Channel code to Overcome Multipath of Underwater Channel  

Kim, Nam-Soo (한국해양대학교 전파공학과)
Kim, Min-Hyuk (한국해양대학교 전파공학과)
Park, Tae-Doo (한국해양대학교 전파공학과)
Kim, Chul-Seung (한국해양대학교 전파공학과)
Jung, Ji-Won (한국해양대학교 전파공학과)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.33, no.5, 2009 , pp. 738-745 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 receive signal to make error floor. In this paper, we propose the underwater communication system using various channel coding schemes such as RS coding, convolutional code, turbo code and concatenated code for overcoming 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 not effect on error correcting. For correcting of error floor by multipath, it is necessary to use strong channel codes like turbo code. Turbo code is one of the iterative codes. And the performance of concatenated codes including RS code has better performance than using singular channel codes.
Keywords
Underwater acoustic channel; Multipath; RS coding; Turbo code; Concatenated code;
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