A Full Rate Dual Relay Cooperative Approach for Wireless Systems

作者：Hassan Syed Ali^*; Li Geoffrey Ye; Wang Peter Shu Shaw; Green Marilynn Wylie

来源：Journal of Communications and Networks, 2010, 12(5): 442-448.

DOI：10.1109/JCN.2010.6388489

• Cooperative diversity
• decision-feedback equalizer (DFE)
• dual relay transmission
• minimum mean-squared error (MMSE)
• MMSE linear equalizer (LE)
• power allocation

Cooperative relaying methods have attracted a lot of interest in the past few years. A conventional cooperative relaying scheme has a source, a destination, and a single relay. This cooperative scheme can support one symbol transmission per time slot, and is called full rate transmission. However, existing full rate cooperative relay approaches provide asymmetrical gain for different transmitted symbols. In this paper, we propose a cooperative relaying scheme that is assisted with dual relays and provides full transmission rate with the same macro-diversity to each symbol. We also address equalization for the dual relay transmission system in addition to addressing the issues concerning the improvement of system performance in terms of optimal power allocations.

• 出版日期2010-10