A Relay Assisted Cooperative Transmission Protocol for Wireless Multiple Access SystemsIEEE Transactions on Communications (2008)
AbstractIn 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.
Publication DateAugust, 2008
Citation InformationDennis Goeckel. "A Relay Assisted Cooperative Transmission Protocol for Wireless Multiple Access Systems" IEEE Transactions on Communications (2008)
Available at: http://works.bepress.com/dennis_goeckel/6/