Optimal power and subcarrier allocation with partial side information for downlink OFDMA system  

作　　者：ZENG Ling-kang LIU Yuan-an XIE Gang CHANG Ling-jun 

机构地区：[1]Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2010年第5期50-57,共8页中国邮电高校学报（英文版）

基　　金：supported by Sino-Swedish International Mobile Telecommunications-Advanced (IMT-A) Cooperation Project (2008DFA11780);Canada-China Scientific and Technological Cooperation (2010DFA11320);National Natural Science Foundation of China (60802033, 60873190);the Research and Development Program Hi-Tech of China (2008AA01Z211)

摘　　要：In this paper,we investigate the power and subcarrier allocation issue in the case of partial side information for downlink orthogonal frequency division multiple access （OFDMA） system.Relaxation method is utilized to characterize the necessary conditions of the optimal solution and the uniqueness of the optimal solution is proved.The game theoretical concept,surplus function is also introduced to analyze the optimal solution.Based on the theoretical analysis,we propose iterative surplus balancing algorithm （ISBA） that can jointly assign the power and subcarriers in multiple rounds,and then the optimality of ISBA is proved.Simulation results are presented to show the characteristics of the theoretical analysis and ISBA.In this paper,we investigate the power and subcarrier allocation issue in the case of partial side information for downlink orthogonal frequency division multiple access （OFDMA） system.Relaxation method is utilized to characterize the necessary conditions of the optimal solution and the uniqueness of the optimal solution is proved.The game theoretical concept,surplus function is also introduced to analyze the optimal solution.Based on the theoretical analysis,we propose iterative surplus balancing algorithm （ISBA） that can jointly assign the power and subcarriers in multiple rounds,and then the optimality of ISBA is proved.Simulation results are presented to show the characteristics of the theoretical analysis and ISBA.

关 键 词：resource allocation partial side information OFDMA surplus function game theory 

分 类 号：TN929.531[电子电信—通信与信息系统] O224[电子电信—信息与通信工程]