Distributed Channel Coding for Underwater Acoustic Cooperative Networks

Multiuser cooperative schemes usually rely on relay selection or channel selection to avoid deep fading and achieve diversity while maintaining acceptable spectral efficiency. In some applications such as underwater acoustic communications, the low speed of the acoustic wave results in a very long d...

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Vydáno v:	IEEE transactions on communications Ročník 62; číslo 3; s. 848 - 856
Hlavní autoři:	Jalil, Amir Minayi, Ghrayeb, Ali
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	New York, NY IEEE 01.03.2014 Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:	Applied sciences Block codes Channels Codes Coding Coding, codes Convolutional codes Cooperative networks Decoding Detection, estimation, filtering, equalization, prediction distributed channel coding Exact sciences and technology Fading Information, signal and communications theory Low speed Multiplexing Networks Relay Relays Remedies Signal and communications theory Signal to noise ratio Signal, noise Systems, networks and services of telecommunications Telecommunications Telecommunications and information theory Transmission and modulation (techniques and equipments) underwater acoustic channels Underwater acoustics Acoustic communication Performance evaluation Multiplexing Block code Parameter estimation Relay Low speed Acoustic wave Resource allocation Cooperative networks Implementation Linear coding Frequency selection Channel estimation Submarine telecommunication Delay time Reed Solomon code Fading Multiple access Cooperative systems underwater acoustic channels distributed channel coding Channel coding Relay channel Underwater acoustics
ISSN:	0090-6778, 1558-0857
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Popis
Shrnutí:	Multiuser cooperative schemes usually rely on relay selection or channel selection to avoid deep fading and achieve diversity while maintaining acceptable spectral efficiency. In some applications such as underwater acoustic communications, the low speed of the acoustic wave results in a very long delay between the channel state information (CSI) measurement time and the relay assignment time, which leads to a severely outdated CSI. To remedy this, we propose distributed coding schemes that aim at achieving good diversity-multiplexing trade-off (DMT) for multiuser scenarios where CSI is not available for resource allocation. We consider a network with multiple source nodes, multiple relay nodes, and a single destination. We first introduce a distributed linear block coding scheme, including Reed-Solomon codes, where each relay implements a column of the generator matrix of the code, and soft decision decoding is employed to retrieve the information at the destination side. We derive the end-to-end error performance of this scheme and show that the achievable diversity equals the minimum Hamming distance of the underlying code, while its DMT outperforms that of existing schemes. We extend the proposed scheme to distributed convolutional codes, and show that achieving higher diversity orders is also possible.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23
ISSN:	0090-6778 1558-0857
DOI:	10.1109/TCOMM.2014.012314.130425