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http://dx.doi.org/10.7776/ASK.2013.32.5.377

Performance of COFDM in Underwater Acoustic Channel with Frequency Selective Fading  

Seo, Chulwon (부경대학교 정보통신공학과)
Park, Jihyun (부경대학교 정보통신공학과)
Park, Kyu-Chil (부경대학교 정보통신공학과)
Yoon, Jong Rak (부경대학교 정보통신공학과)
Publication Information
The Journal of the Acoustical Society of Korea / v.32, no.5, 2013 , pp. 377-384 More about this Journal
Abstract
In this paper, performance of COFDM (Coded Orthogonal Frequency Division Multiplexing) which is OFDM with a forward error correction code, is studied in frequency selective fading underwater acoustic communication channel. The OFDM is a multiplexing technique resistant to frequency selective multipath channel. In OFDM, a broadband information signal is transformed into several narrow band signals and transmits narrow band signals whose bandwidths are less than the channel coherence bandwidth. However, its performance is degraded in a specific narrow band signal due to its deep fading by multipath. To mitigate this degradation, COFDM which is OFDM with convolution code as a forward error correction code, is evaluated. The performance of COFDM is found to be better than that of OFDM in multipath channel.
Keywords
Underwater acoustic communication; Underwater multipath channel; OFDM; Frequency selective fading; Convolutional code; COFDM;
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Times Cited By KSCI : 2  (Citation Analysis)
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