Full-Duplex Relay Selection for Amplify-and-Forward Cooperative Networks
Full-Duplex Relay Selection for Amplify-and-Forward Cooperative Networks
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DOI：
10.1109/twc.2012.101912.111944
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发表时间：
2012-12-01
影响因子：
10.4
通讯作者：
Yuen, Chau
中科院分区：
文献类型：
--
作者：
Krikidis, Ioannis;Suraweera, Himal A.;Yuen, Chau
研究全双工放大转发协作通信中的中继选择问题。不同的中继选择方案假设不同的瞬时信息的可用性进行了研究。我们考虑最佳中继选择，最大限度地提高瞬时FD信道容量，并需要全球信道状态信息（CSI）以及几个次优的中继选择策略，利用部分CSI知识，如a）源中继和中继目的地链路B）环路干扰c）源中继链路和环路干扰。为了便于比较，精确的中断概率表达式和渐近近似的这些政策，显示零分集阶。此外，一个最佳的中继选择过程，采用了混合中继策略，根据瞬时CSI动态切换FD和半双工中继，也进行了研究。
This paper focuses on the relay selection problem in amplify-and-forward (AF) cooperative communication with full-duplex (FD) operation. Different relay selection schemes assuming the availability of different instantaneous information are studied. We consider optimal relay selection that maximizes the instantaneous FD channel capacity and requires global channel state information (CSI) as well as several sub-optimal relay selection policies that utilize partial CSI knowledge such as a) source-relay and relay-destination links b) loop interference c) source-relay links and loop interference. To facilitate comparison, exact outage probability expressions and asymptotic approximations of these policies that show a zero diversity order are derived. In addition, an optimal relay selection procedure that incorporates a hybrid relaying strategy, which dynamically switches between FD and half-duplex relaying according to the instantaneous CSI, is also investigated.