计算机工程与应用2011，Vol.47Issue(8)：21-24,4.DOI:10.3778/j.issn.1002-8331.2011.08.007
中继OFDMA系统容量公平资源分配算法研究
Resource allocation for relay OFDMA system with proportional fairness.
摘要
Abstract
A resource allocation algorithm is proposed for decoding and forward Orthogonal Frequency Division Multiple Access (OFDMA) relay system. The objective is to maximize the system capacity with the total power constraint,while guaranteeing proportional fairness of multiple users.The resource allocation problem is a nonlinear optimal problem and the complexity is very high. In order to lower the complexity of problem, the proposed suboptimal algorithm includes two steps: Subcarrier allocation and power allocation. The subcarriers of source-relay channel and relay-destination channel are paired according to the channel state information of two hops, and with equal power allocation. The subcarrier pairs are allocated to users under the proportional fairness constraint. The power allocation is implemented with Lagrange method for every user. Simulation results show that the proposed algorithm can satisfy every user data rate requirements and have a better performance than other algorithms.关键词
中继/正交频分多址接入/资源分配/子载波配对/比例公平Key words
relay/Orthogonal Frequency Division Multiple Access(OFDMA)/resource allocation/subcarrier pairing/proportional fairness分类
信息技术与安全科学引用本文复制引用
万庆涛,马冠一..中继OFDMA系统容量公平资源分配算法研究[J].计算机工程与应用,2011,47(8):21-24,4.基金项目
国家重点基础研究发展计划(the National Basic Research Program of China under Grant No.2007CB815500). （the National Basic Research Program of China under Grant No.2007CB815500）
