计算机工程与应用2012，Vol.48Issue(9)：54-56,62,4.DOI:10.3778/j.issn.1002-8331.2012.09.016
一种公平的认知无线电系统下行频谱分配策略
Downlink spectrum allocation strategy for cognitive radio system with fairness consideration
摘要
Abstract
Present researches on the spectrum allocation for cognitive radio system mostly focus on maximizing the network throughput, while the secondary users QoS demand is rarely considered, which makes the spectrum allocation scheme lack fairness. With consideration of primary users interference temperature constraint and secondary users QoS demand, downlink spectrum allocation algorithm for OFDM-based cognitive radio system is studied. The proposed algorithm constructs objective function subject to inequality constraint to maximize the network throughput. The approximate optimal solution is obtained by Lagrange dual method. Simulation result shows that the QoS demand of secondary users can be guaranteed at the cost of network throughput loss, which improves the system fairness.关键词
认知无线电/正交频分复用(OFDM)/服务质量(QoS)需求/频谱分配/公平Key words
cognitive radio/ Orthogonal Frequency Division Multiplexing (OFDM)/ Quality of Service (QoS) demand/ spectrum allocation/ fairness分类
信息技术与安全科学引用本文复制引用
胡首都,仵国锋,何雪松,胡捍英..一种公平的认知无线电系统下行频谱分配策略[J].计算机工程与应用,2012,48(9):54-56,62,4.基金项目
国家科技重大专项资助项目(No.2009ZX03003-007). （No.2009ZX03003-007）
