Optimizing the Performance of OFDM-Based Cooperative Networks by Relay Selection, Power Allocation and Relay Localization

摘要：

We investigate the outage probability for amplify-and-forward (AF) and decode-and-forward (DF) relaying in OFDM-based cooperative networks. To minimize the outage probability, the relay which has the maximum received SNR is selected as the cooperative relay. Based on the relay selection, the problems of optimal power allocation and placing relays in the optimal position are discussed. And the expressions of optimal power allocation and optimal position are finally achieved. The analysis and simulation results show that through the proposed relay selection scheme, M orders of diversity is achieved, where M is the number of potential relays. It also shows that optimal power allocation and optimal position to placing relays achieve much better performance.

作者: Wang Lijie Zhao Haitao Xiyong Wei Jibo

作者单位: College of electronic engineering National University of Defense Technology Changsha, China

会议类型: 国际会议

会议名称: 2010国际超宽带会议(ICUWB 2010)

会议地点: 南京

会议语种:英文

页码: 1-4

在线出版日期: 2010-09-20（万方平台首次上网日期，不代表论文的发表时间）