The optimal power distribution in cooperative communication relay system  

作　　者：张超一 Wu Muqing Miao Jiansong Luan Linlin 

机构地区：[1]Laboratory of Network System Architecture and Convergence,Beijing University of Post and Telecommunications [2]College of Technology,Beijing Forestry University

出　　处：《High Technology Letters》2013年第4期371-377,共7页高技术通讯（英文版）

基　　金：Supported by the National High Technology Research and Development Programme of China(No.2008AA01A322);National Science andTechnology Major Projects(No.2011ZX03001-007-03)

摘　　要：In order to optimize power utilization of relay nodes in cooperative communication,a power allocation algorithm with objective function to maximize system capacity is proposed.Based on the convex optimization theory,an ellipsoid algorithm is used to solve this problem,which could simplify the subgradient choosing steps and improve convergence stability,so that an optimized power allocation algorithm is presented.Theoretical analysis and simulation results show that the algorithm can effectively distribute the power of each node with lower complexity,and ensure the transmission capability of relay nodes in cooperative communication.In order to optimize power utilization of relay nodes in cooperative communication,a power allocation algorithm with objective function to maximize system capacity is proposed.Based on the convex optimization theory,an ellipsoid algorithm is used to solve this problem,which could simplify the subgradient choosing steps and improve convergence stability,so that an optimized power allocation algorithm is presented.Theoretical analysis and simulation results show that the algorithm can effectively distribute the power of each node with lower complexity,and ensure the transmission capability of relay nodes in cooperative communication.

关 键 词：relay network power distribution convex optimization ellipsoid algorithm 

分 类 号：TN925[电子电信—通信与信息系统]