Hamid Meghdadi
ABSTRACT
The problem of transmitting data from one base station to multiple user mobile stations through some multiple antenna relay stations is studied in this paper. The links between the base station and relays are considered error free and ideal. Therefore, decode and forward strategy is used and we study the downlink between relays and mobile stations. A method to optimize the precoding vector in relays to cancel out multiple access interference and to maximize the signal to noise ratio at the mobile stations is proposed in this paper. We show by Mont-Carlo simulation and a semi-analytic method that maximum diversity advantage can be obtained. We show that the diversity advantage is a simple function of the system parameters: number of relays, number of antennas and the number of users.
- Jian Zhao, M. Kuhn, A. Wittneben, and G. Bauch. Cooperative transmission schemes for decode-and-forward relaying. PIMRC 2007, pages 1--5, September 2007.Google Scholar
Cross Ref
- Hamid Meghdadi, Vahid Meghdadi, and Jean-Pierre Cances. Cooperative multiple access transmission using precoding vectors. EUSIPCO, July 2009.Google Scholar
- Zhengdao Wang and Georgios B. Giannakis. A simple and general parameterization quantifying performance in fading channels. Communications, IEEE Transactions on, 51(8):1389--1398, August 2003.Google ScholarCross Ref
- P. H. Gregson. Using angular dispersion of gradient direction for detecting edge ribbons. Pattern Analysis and Machine Intelligence, IEEE Transactions on, 15:682--692, July. 1992. Google ScholarDigital Library
- Z. Yi and Il-Min Kim. Joint optimization of relay-precoders and decoders with partial channel side information in cooperative networks. IEEE JSAC, 25(2):447--458, February 2007. Google ScholarDigital Library
- Marvin K. Simon and Mohamed-Slim Alouini. Digital Communication over Fading Channels. JOHN WILEY & SONS, 2005.Google Scholar
Index Terms
- Performance analysis of a cooperative multiple access relaying scheme
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