| AT TOP | DOWN | ||
|---|---|---|---|
| Decode-and-Forward Cooperative Networks with Multiuser Diversity | |||
| Yi,Zhihang | Queen's University | ||
| Kim,Il-Min | Queen's University | ||
| In this paper, we first present a hard decision decoder (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 K^2/2+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. | |||
| Mr. Yi received his B.Eng degree in the Department of Information Science and Electrical Engineering, Zhejiang University, Hangzhou, China PR, in July 2003. In Jan 2004, he joined the Wireless Information Transmission Lab (WITL) at the Department of Electrical and Computer Engineering, Queen's University, Kingston, Canada, where he received his M.Sc (Eng) degree in Aug 2005. Now he is a Ph.D. candidate and working as a Research Assistant in WITL. Mr. Yi's research interests include cooperative network, sensor network, space-time code, and MIMO communication system. | |||