Feedback threshold with guaranteed QoS in multiuser OFDM systems  

作　　者：YANG Rui-zhe YUAN Chao-wei TENG Ying-lei ZHANG Yan-hua 

机构地区：[1]School of Information and Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China [2]School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2009年第2期24-28,共5页中国邮电高校学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(60872149)

摘　　要：A threshold setting scheme is proposed based on the resource management and limited feedback theory in multiuser orthogonal frequency division multiplexing （OFDM） systems. In adaptive resource allocation, the factors denoting the quality of service （QoS） and fairness are both considered as the user weight. From the aspect of feedback outage probability, the proposed algorithm sets the threshold for each user related to its weight, which brings enough feedback to the user with greater weight. Analysis and simulation results show that, compared with the threshold ignoring weights, the proposed scheme has much lower feedback load while with better QoS.A threshold setting scheme is proposed based on the resource management and limited feedback theory in multiuser orthogonal frequency division multiplexing （OFDM） systems. In adaptive resource allocation, the factors denoting the quality of service （QoS） and fairness are both considered as the user weight. From the aspect of feedback outage probability, the proposed algorithm sets the threshold for each user related to its weight, which brings enough feedback to the user with greater weight. Analysis and simulation results show that, compared with the threshold ignoring weights, the proposed scheme has much lower feedback load while with better QoS.

关 键 词：OFDM MULTIUSER multimedia traffic limited feedback 

分 类 号：TN929.5[电子电信—通信与信息系统] TP316[电子电信—信息与通信工程]