| Underwater Acoustic Communication Based on Pattern Time Delay Shift Coding Scheme |
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| 作者姓名： | 殷敬伟 惠俊英 惠娟 姚直象 王逸林 |
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| 作者单位： | College of Underwater Acoustic Engineering Harbin Engineering University Harbin 150001 China，College of Underwater Acoustic Engineering Harbin Engineering University Harbin 150001 China，College of Underwater Acoustic Engineering Harbin Engineering University Harbin 150001 China，College of Underwater Acoustic Engineering Harbin Engineering University Harbin 150001 China，College of Electric Navy Engineering University Wuhan 430043 China，College of Underwater Acoustic Engineering Harbin Engineering University Harbin 150001 China |
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| 摘 要： | 1 .Introduction Underwater acoustic (UWA) communicationis a fast developingfield,and its applicationis notlimitedto military affairs ,but is also extendinginto commercial fields .Catipovic (1990) ,Stojanovic(1996) and Kilfoyle and Baggeroer (2000) pointed…
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| 关 键 词： | 海洋 水下工程 时延仿真 水下通信 |
| 收稿时间： | 2005-08-15 |
| 修稿时间： | 2006-04-18 |
Underwater Acoustic Communication Based on Pattern Time Delay Shift Coding Scheme |
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| YIN Jing-wei,HUI Jun-ying,HUI Juan,YAO Zhi-xiang,WANG Yi-lin.Underwater Acoustic Communication Based on Pattern Time Delay Shift Coding Scheme[J].China Ocean Engineering,2006,20(3):499-508. |
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| Authors: | YIN Jing-wei HUI Jun-ying HUI Juan YAO Zhi-xiang WANG Yi-lin |
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| Abstract: | Underwater acoustic communication based on Pattern Time Delay Shift Coding (PDS) communication scheme is studied. The time delay shift values of the pattern are used to encode the digital information in the PDS scheme, which belongs to the Pulse Position Modulation (PPM). The duty cycle of the PDS scheme is small, so it can economize the power for communication. By use of different patterns for code division and different frequencies for channel division, the communication system is capable of mitigating the inter-symbol interference (ISI) caused by the multipath channel. The data rate of communication is 1000 bits/s at 8 kHz bandwidth. The receiver separates the channels by means of band-pass filters, and performs decoding by 4 copy-correlators to estimate the time delay shift value. Based on the theoretical analysis and numerical simulations, the PDS scheme is shown to be a robust and effective approach for underwater acoustic communication. |
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| Keywords: | underwater acoustic (UWA) communication pattern time delay shift coding (PDS) estimation of time delay shift multipath channel inter-symbol interference (ISI) |
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