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Decode-and-Forward Cooperative Networks with Multiuser Diversity

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2 Author(s)
Zhihang Yi ; Dept. of Electr. & Comput. Eng., Queen''s Univ., Kingston, Ont. ; Il-Min Kim

In this paper, we first present a hard decision detector (HDD) for the cooperative networks with the decode-and-forward protocol. Compared to the optimum maximum likelihood (ML) estimator, the proposed HDD achieves the same diversity order while having much lower complexity. Based on the HDD, we propose a new scheme to combine the decode-and-forward protocol with the multiuser diversity. It is shown that the new scheme substantially increases the diversity order from approximately K/2+1 to K2/2+1, where K is number of relay terminals. Furthermore, an approximate expression of the average symbol error rate (SER) of the new scheme is derived

Published in:

Military Communications Conference, 2006. MILCOM 2006. IEEE

Date of Conference:

23-25 Oct. 2006