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M-ary CDMA multiuser underwater acoustic communication and its experimental results

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Abstract

A novel M-ary code division multiple access (M-ary CDMA) underwater acoustic communication (UAC) that utilizes quasi-orthogonal sequences has been proposed for the multiple mobile unmanned underwater vehicle (UUV). Its performance has been verified in both four-user synchronous and three-user asynchronous scenarios through a lake experiment over a very shallow-water channel. At a chip rate of 2 kilochips per second, good bandwidth efficiency and robust links have been achieved both at 5 and 15 km distances. The performance of M-ary CDMA in mobile condition (3 m/s) is demonstrated by using the recorded lake experimental data. Experimental results show that the proposed scheme is suitable for multi-user communication platform in long-range shallow-water channel with simple receiver algorithms.

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Authors and Affiliations

  1. College of Marine Engineering, Northwestern Polytechnical University, Xi’an, 710072, China

    ChengBing He, JianGuo Huang & QunFei Zhang

  2. China Ship Research and Development Academy, Beijing, 100085, China

    ZhengHua Yan

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  1. ChengBing He
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  2. JianGuo Huang
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  3. ZhengHua Yan
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  4. QunFei Zhang
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Correspondence to ChengBing He.

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He, C., Huang, J., Yan, Z. et al. M-ary CDMA multiuser underwater acoustic communication and its experimental results. Sci. China Inf. Sci. 54, 1747–1755 (2011). https://doi.org/10.1007/s11432-011-4202-2

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  • DOI: https://doi.org/10.1007/s11432-011-4202-2

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