NDLI: Two-way relay underwater acoustic communications with multiuser decision-feedback detection and relay preprocessing

Content Provider	IEEE Xplore Digital Library
Author	Fang Xu Lie-Liang Yang
Copyright Year	2012
Description	Author affiliation: The Key Laboratory of Underwater Acoustic, Communication and Marine Information Technology, Xiamen University, Xiamen, Fujian, 361009, China (Fang Xu) \|\| School of Electronics and Computer Science, University of Southampton, SO17 1BJ, United Kingdom (Lie-Liang Yang)
Abstract	A two-way relay underwater acoustic communication (TWR-UAC) scheme is proposed and investigated, where communication between a pair of terminals is assumed. In our studies, underwater acoustic (UA) channels are modeled as the sparse multipath channels experiencing Rayleigh fading. A novel relaying protocol is proposed to exploit the long transmission delay of sound in water. It can be shown that this protocol is capable of increasing the throughput of UAC systems, when half-duplex mode is assumed. At the relay, minimum mean-square error decision feedback detection (MMSE-DFD) and MMSE-assisted preprocessing are invoked, in order to mitigate multiuser interference (MUI) and inter-symbol interference (ISI), as well as to reduce the complexity of communication terminals. Our studies and performance results show that the proposed TWR-UAC system is capable of achieving promising error performance, by making use of both the multipath diversity and the spatial diversity provided by the transducer array of the relay.
Starting Page	602
Ending Page	607
File Size	208826
Page Count	6
File Format	PDF
ISBN	9781467328142
e-ISBN	9781467328159
e-ISBN	9781467328135
DOI	10.1109/ICCChina.2012.6356955
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-08-15
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Bit error rate Interference Rayleigh channels Arrays Relays Underwater acoustics
Content Type	Text
Resource Type	Article

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