The Joint Relay Selection with Power Allocation for Outage-Optimization in OFDM-based Cooperative Relaying
We are concerned with minimizing outage probability in a typical orthogonal frequency division multiplexing (OFDM)-based two-hop relaying network. With the instantaneous channel state information at the receiver of each relay, we drive the optimal relay selection scheme which is jointly with optimum power allocation policies, and can be implemented in a distributed way. Since the power allocation to each subcarrier affects the final result of relay selection, the optimal power allocation intra subcarrier pair and all-around optimal power allocation are proposed. We demonstrate that the proposed relay selection scheme achieves M orders of diversity, where M is the number of the potential relays. Simulation results verify our analytical results and show that the optimal relay selection scheme jointly with the proposed power allocation policies offer significant performance gain.
orthogonal frequency division multiplexing amplify-and-forward decode-and-forward cooperative relaying
Lijie Wang Haitao Zhao Yi Tang Jibo Wei
College of Electronic Engineering National University of Defense Technology Changsha, Chia
国际会议
太原
英文
557-561
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）