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- W2388809388 abstract "In radio-communications,Multi-user communications can be realized by using Time Division Multiple Access(TDMA),Frequency Division Multiple Access(FDMA) or Code Division Multiple Access(CDMA).In the underwater acoustic channel,the complex spatial structure of the acoustic field resulted from multipath propagation necessitates alternative method to be used for multi-user communications in shallow-water.Time reversal(or phase conjugation) approach has good compressibility in both temporal and spatial domains;besides,its focal property can be taken advantage of to retrofocus on the source location no matter how complicated the environment is.So it provides parallel independent communication channels for the different users and reduces the co-channel interference.In this paper,based on the vertical receiver array,the time reversal technique is used to realize the different users' communication in the same underwater channel.Additionally,an adaptive decision-feedback equalizer with Phase-Lock Loop is used to reduce the inter-symbol interference(ISI).A sea experiment was conducted to verify the related ~eory and the results show that the multi-user simultaneous communication can be realized." @default.
- W2388809388 created "2016-06-24" @default.
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- W2388809388 date "2009-01-01" @default.
- W2388809388 modified "2023-09-25" @default.
- W2388809388 title "Time-reversal multi-user underwater acoustics communication in shallow water" @default.
- W2388809388 hasPublicationYear "2009" @default.
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