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A relay assisted cooperative transmission protocol for wireless multiple access systems

Lookup NU author(s): Dr Zhiguo Ding

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Abstract

In this paper, we propose a spectrally efficient cooperative transmission protocol for multiple access scenarios. The key feature is to utilize multi-user diversity and fully exploit the dynamic nature of radio propagation. In particular, by carefully scheduling the multiple sources and relays' transmissions, a source with a poor connection to the destination can have higher priority to obtain help from a relay with better channel condition. As a result, the full diversity gain is achievable even though only a fraction of relays is scheduled to help each user. We developed an achievable diversity-multiplexing tradeoff for the proposed transmission protocol to assist performance evaluation. When the number of relays is large, the diversity-multiplexing tradeoff achieved by the proposed scheme can approximate the optimal multiple-input single-output upper bound. Both analytical and numerical results show that the proposed protocol outperform other comparable schemes in most conditions. © 2010 IEEE.

Publication metadata

Author(s): Ding Z, Leung K, Goeckel D, Towsley D

Publication type: Article

Publication status: Published

Journal: IEEE Transactions on Communications

Year: 2010

Volume: 58

Issue: 8

Pages: 2425-2435

Print publication date: 23/08/2010

ISSN (print): 0090-6778

ISSN (electronic): 1558-0857

Publisher: IEEE

URL: http://dx.doi.org/10.1109/TCOMM.2010.062310.080466

DOI: 10.1109/TCOMM.2010.062310.080466

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