解码转发协同中继网络多用户分集

Multiuser Diversity in Decode-and-Forward Cooperative Relay Networks

理论分析了协同中继网络中多用户分集的性能,推导出在解码转发方式下,基于多用户分集增益的系统中断概率和符号错误概率的闭式表达式.理论和仿真研究表明,在多用户协作中继网络中,运用多用户调度策略可获得较高的分集度增益.多用户协作中继网络中的中继和接入用户均为有效的多用户分集增益源.

The performance of multiuser diversity in cooperative relay networks is analyzed. Closed- form expressions of outage probability and symbol error probability for decode-and-forward （DF） based cooperative relay networks are derived. The deduction is validated by simulations which Show that a （M ＋ 1 ） K-fold diversity gain can be achieved when adopting multiuser diversity based scheduling （where M is the number of available relay users and K is the number of accessing users）. These re- sults demonstrate that, in cooperative relay networks, both relay users and accessing users are sources of the multiuser diversity gain.