NDLI: A novel low complexity space-time coding schemes for underwater acoustic communications

Content Provider	IEEE Xplore Digital Library
Author	Han Chong Zhang Xiaomin Yu Yang Li Tongxu
Copyright Year	2013
Description	Author affiliation: Coll. of Marine, Northwestern Polytech. Univ., Xi'an, China (Han Chong; Zhang Xiaomin; Yu Yang; Li Tongxu)
Abstract	Underwater acoustic (UWA) channels exhibit time-varying fading statistics, thus a coded modulation scheme optimally designed for a specific model (e.g., Rayleigh fading) will perform poorly when the channel statistics change. Exploiting diversity via coded modulation is a robust approach to improve the reliability of the acoustic link in a variety of channel conditions. Herein, protocols coupled with space-time block code(STBC) strategies are proposed and analyzed for underwater communication. In this paper, we consider a time-reversal space-time block code (STBC) with rotated factors(RFTR-STBC) which extend a tranditional STBC scheme to a underwater communication scenario. We formulate its algebraic structure and propose a systematic method for its construction. Based on time-reversal scheme,we presented a new stratgy of STBC known as the block orthogonal STBCs (BOSTBCs), which exploited the time-reversal matrix with the rotated factor to restructure the new coded matrix.Analyzing both simulated and experimental data, the following results are confirmed: the proposed coding scheme yield a lower error rate when spatial diversity is very limited. On the other hand, the decoding complexity of the scheme show a better reduction performance than tranditional OSTBC schemes.
Starting Page	6383
Ending Page	6386
File Size	137824
Page Count	4
File Format	PDF
ISBN	9789881563835
ISSN	19341768
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-07-26
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	TCCT, CAA
Subject Keyword	STBC Communiaction Rayleigh channels Peak to average power ratio underwater Encoding MIMO Complexity theory time reversal (TR) Underwater acoustics Maximum likelihood decoding
Content Type	Text
Resource Type	Article

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