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 Yuehai Zhou,Xiuling Cao,Feng Tong.Acoustic MIMO Communications in a Very Shallow Water Channel[J].Journal of Marine Science and Application,2015,(4):434-439.[doi:10.1007/s11804-015-1323-9]
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Acoustic MIMO Communications in a Very Shallow Water Channel


Acoustic MIMO Communications in a Very Shallow Water Channel
Yuehai Zhou Xiuling Cao Feng Tong
Yuehai Zhou Xiuling Cao Feng Tong
Key Laboratory of Underwater Acoustic Communication and Marine Information Technology of the Minister of Education, Xiamen University, Xiamen 361005, China
underwater acousticunderwater acoustic communicationmultiple-input multiple-output (MIMO)decision feedback equalizer (DFE)very shallow watermulti-channeltime reversal
Underwater acoustic channels pose a great difficulty for the development of high speed communication due to highly limited band-width as well as hostile multipath interference. Enlightened by rapid progress of multiple-input multiple-output (MIMO) technologies in wireless communication scenarios, MIMO systems offer a potential solution by enabling multiple spatially parallel communication channels to improve communication performance as well as capacity. For MIMO acoustic communications, deep sea channels offer substantial spatial diversity among multiple channels that can be exploited to address simultaneous multipath and co-channel interference. At the same time, there are increasing requirements for high speed underwater communication in very shallow water area (for example, a depth less than 10 m). In this paper, a space-time multichannel adaptive receiver consisting of multiple decision feedback equalizers (DFE) is adopted as the receiver for a very shallow water MIMO acoustic communication system. The performance of multichannel DFE receivers with relatively small number of receiving elements are analyzed and compared with that of the multichannel time reversal receiver to evaluate the impact of limited spatial diversity on multi-channel equalization and time reversal processing. The results of sea trials in a very shallow water channel are presented to demonstrate the feasibility of very shallow water MIMO acoustic communication.


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基金项目:Supported by the National Natural Science Foundation of China (Nos. 11274259, 11574258) and the Open Project Program of the Key Laboratory of Underwater Acoustic Signal Processing, the Minister of Education (Southeast University) (No. UASP1305).
通讯作者:Feng Tong, E-mail:ftong@xmu.edu.cn
Last Update: 2015-11-07