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Proceedings Paper

Channel coding for underwater acoustic single-carrier CDMA communication system
Author(s): Lanjun Liu; Yonglei Zhang; Pengcheng Zhang; Lin Zhou; Jiong Niu
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Paper Abstract

CDMA is an effective multiple access protocol for underwater acoustic networks, and channel coding can effectively reduce the bit error rate (BER) of the underwater acoustic communication system. For the requirements of underwater acoustic mobile networks based on CDMA, an underwater acoustic single-carrier CDMA communication system (UWA/SCCDMA) based on the direct-sequence spread spectrum is proposed, and its channel coding scheme is studied based on convolution, RA, Turbo and LDPC coding respectively. The implementation steps of the Viterbi algorithm of convolutional coding, BP and minimum sum algorithms of RA coding, Log-MAP and SOVA algorithms of Turbo coding, and sum-product algorithm of LDPC coding are given. An UWA/SCCDMA simulation system based on Matlab is designed. Simulation results show that the UWA/SCCDMA based on RA, Turbo and LDPC coding have good performance such that the communication BER is all less than 10-6 in the underwater acoustic channel with low signal to noise ratio (SNR) from -12 dB to -10dB, which is about 2 orders of magnitude lower than that of the convolutional coding. The system based on Turbo coding with Log-MAP algorithm has the best performance.

Paper Details

Date Published: 23 January 2017
PDF: 10 pages
Proc. SPIE 10322, Seventh International Conference on Electronics and Information Engineering, 103222S (23 January 2017); doi: 10.1117/12.2265470
Show Author Affiliations
Lanjun Liu, Ocean Univ. of China (China)
Yonglei Zhang, Ocean Univ. of China (China)
Pengcheng Zhang, Ocean Univ. of China (China)
Lin Zhou, Ocean Univ. of China (China)
Jiong Niu, Ocean Univ. of China (China)


Published in SPIE Proceedings Vol. 10322:
Seventh International Conference on Electronics and Information Engineering
Xiyuan Chen, Editor(s)

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