Performance of LDPC Coded MC-MFSK in Shallow Water Acoustic Channel

Ben Xue Su, Kun De Yang, Fei Yun Wu

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

In shallow water channels, incoherent MFSK demonstrates significant performance advantages over coherent modulation due to its anti-multipath properties. However, there is limited research on MFSK coding in shallow water multipath environments, with few studies conducted in real-world scenarios. Therefore, this paper proposes a communication system scheme that integrates low code rate LDPC coding with multicarrier MFSK (MC-MFSK). Addressing the mismatch of the existing LDPC standard code rate with the hydroacoustic harsh environment, a rapid method for generating low code rate LDPC codes through base matrix expansion is proposed. Additionally, the article derives an expression for the initialization logarithmic likelihood ratio for MFSK over AWGN channels. Simulation results demonstrate that the performance of the low-bitrate LDPC code surpasses that of convolutional codes and Hadamard-Convolution joint codes. The reliability of the proposed communication scheme is further verified through a shallow sea experiment conducted in Wuyuan Bay, Xiamen, China.

源语言英语
主期刊名Sixteenth International Conference on Signal Processing Systems, ICSPS 2024
编辑Robert Minasian, Li Chai
出版商SPIE
ISBN(电子版)9781510689251
DOI
出版状态已出版 - 2025
活动16th International Conference on Signal Processing Systems, ICSPS 2024 - Kunming, 中国
期限: 15 11月 202417 11月 2024

出版系列

姓名Proceedings of SPIE - The International Society for Optical Engineering
13559
ISSN(印刷版)0277-786X
ISSN(电子版)1996-756X

会议

会议16th International Conference on Signal Processing Systems, ICSPS 2024
国家/地区中国
Kunming
时期15/11/2417/11/24

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