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Code Design for Multihop Wireless Relay Networks

Oggier, Frédérique and Hassibi, Babak (2008) Code Design for Multihop Wireless Relay Networks. EURASIP Journal on Advances in Signal Processing, 2008 (Specia). Art. ID 457307. ISSN 1110-8657. http://resolver.caltech.edu/CaltechAUTHORS:OGGeurasipjasp08

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Abstract

We consider a wireless relay network, where a transmitter node communicates with a receiver node with the help of relay nodes. Most coding strategies considered so far assume that the relay nodes are used for one hop. We address the problem of code design when relay nodes may be used for more than one hop. We consider as a protocol a more elaborated version of amplify-and-forward, called distributed space-time coding, where the relay nodes multiply their received signal with a unitary matrix, in such a way that the receiver senses a space-time code. We first show that in this scenario, as expected, the so-called full-diversity condition holds, namely, the codebook of distributed space-time codewords has to be designed such that the difference of any two distinct codewords is full rank. We then compute the diversity of the channel, and show that it is given by the minimum number of relay nodes among the hops. We finally give a systematic way of building fully diverse codebooks and provide simulation results for their performance.


Item Type:Article
ORCID:
AuthorORCID
Oggier, Frédérique0000-0003-3141-3118
Additional Information:© 2008 F. Oggier and B. Hassibi. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Received 2 June 2007; Revised 21 October 2007; Accepted 25 November 2007. Recommended by Keith Q. T. Zhang. The first author would like to thank Dr. Chaitanya Rao for his help in discussing and understanding the diversity result. This work was supported in part by NSF Grant CCR-0133818, by The Lee Center for Advanced Networking at Caltech, and by a grant from the David and Lucille Packard Foundation. Special Issue: Distributed Space-Time Systems. Guest Editors: Ranjan K. Mallik, Arogyaswami J. Paulraj, Mrityunjoy Chakraborty, Keith Q. T. Zhang, and George K. Karagiannidis. EURASIP Journal on Advances in Signal Processing, Special Issue No. 5, 2008. http://www.hindawi.com/journals/asp/volume-2008/si.5.html
Funders:
Funding AgencyGrant Number
NSFCCR-0133818
Caltech Lee Center for Advanced NetworkingUNSPECIFIED
David and Lucile Packard FoundationUNSPECIFIED
Record Number:CaltechAUTHORS:OGGeurasipjasp08
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:OGGeurasipjasp08
Alternative URL:http://dx.doi.org/10.1155/2008/457307
Official Citation:Frédérique Oggier and Babak Hassibi, “Code Design for Multihop Wireless Relay Networks,” EURASIP Journal on Advances in Signal Processing, vol. 2008, Article ID 457307, 12 pages, 2008. doi:10.1155/2008/457307
Usage Policy:This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
ID Code:10670
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:03 Jun 2008
Last Modified:08 Aug 2017 03:20

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