Decode-and-forward Relaying in Cellular Systems: Performance Analysis and Optimum Power Allocation
This paper considers a downlink cellular system with decode-and-forward (DF) protocol. The multiple-antenna base station uses maximum-ratio transmission to communicate with the single-antenna mobile station (MS) through direct link and a DF relay station, and the MS utilizes maximum-ratio combining to deal with the received signal. Our interest herein lies in performance analysis for this practical cellular system. We derive exact expressions for the outage probability and the symbol error rate (SER) in closed-form. Moreover, a simple asymptotic approximation and a tight lower bound are presented for the outage probability and the SER respectively, based on which we propose two optimum power allocation schemes as well. Simulation results are provided to validate the theoretical analysis.
maximum-ratio transmission decode-and-forward maximum-ratio combining outage probability symbol-error-rate,optimum-power-allocation
Meilu Lin Jianhua Ge Ye Yang Chao Shen Zhengding Qiu
State Key Laboratory of Integrated Service Networks Xidian University, Xi’an, China, 710071 Institute of Information Science Beijing Jiaotong University, Beijing, China, 100044
国际会议
北京
英文
333-337
2011-11-27（万方平台首次上网日期，不代表论文的发表时间）