电讯技术2016，Vol.56Issue(12)：1310-1315,6.DOI:10.3969/j.issn.1001-893x.2016.12.002
协作多组多播认知无线网络的资源优化配置
Optimal Resource Allocation for Cognitive Radio Networks with Multi-group Multicast
摘要
Abstract
For the increasing shortage of radio spectral resource, a new multi-group multicast ( MGMC ) mechanism based on inter-group and inner-group cooperative transmission is proposed,which relates to multiple multicast groups and uses the same spectrum resource to transmit information in a cooperative way. In cognitive radio( CR) network based on this new transmission mechanism,the optimal resource allo-cation of system is presented. The power allocation scheme is derived from theoretical analysis,and then the optimization of system weighted overall rate is discussed. Moreover,the impact of the signal interference between primary user( PU) and CR users and the power constraint on the transmission rate is considered to optimize user performance. Simulation result indicates that the transmission rate of multi-group multicast ri-ses with the increasing number of users,and optimal user quality of service( QoS) is achieved;when power is constrainted,the PU can be ensured to have good communication performance by setting weighted factors for every multicast group.关键词
认知无线电网络/多播组/干扰限制/功率优化/资源优化配置Key words
cognitive radio network/multi-group multicast/interference constraint/power optimization/op-timal resource allocation分类
信息技术与安全科学引用本文复制引用
石露露,杨守义,张瑞哲,李燕..协作多组多播认知无线网络的资源优化配置[J].电讯技术,2016,56(12):1310-1315,6.基金项目
国家自然科学基金资助项目(61271421) （61271421）
