Power Allocation Based on Duality in a Cognitive Radio System

摘要：

　　In a cognitive radio network based on underlay, the secondary users need to ensure that the interference to the primary users does not exceed the maximum interference tolerance.In this paper, a new algorithm of power allocation is proposed by solving optimal problem according to the theory of duality.The proposed algorithm can satisfy both the limitation of interference tolerance and the requirement of maximum utility, while the requirement of rate can also be considered.Numerical results indicate that the proposed algorithm can limit the secondary users” interference under a predefined threshold while maintaining a maximum utility of the system.

关键词： cognitive radio dual sub-gradient power allocation

作者: FAN Chun TAN Xue-zhi MA Lin WANG Yao

作者单位: Communication Research Center Harbin Institute of Technology, Harbin Heilongjiang 150808, China

会议类型: 国内会议

会议名称: 第二十八届全国通信与信息技术学术年会

会议地点: 南宁

会议语种:英文

页码: 172-178

在线出版日期: 2013-10-01（万方平台首次上网日期，不代表论文的发表时间）