东南大学学报（英文版）2010，Vol.26Issue(3)：375-378,4.
基于多用户认知网络的中断概率性能研究
Outage performance analysis of multiple users in cognitive networks
摘要
Abstract
A cooperative model of multiple primary and secondary users coexisting cognitive network is presented. In this model, the control center is aware of primary user. The control center is aware of the information of the unused spectral resources in terms of the feedback of the sensing results from the secondary users. It allocates idle frequency bands among the secondary users. The primary user accesses the base station (BS) in orthogonal subchannels, and it cooperatively transmits packets with the secondary user and exploits the free band assigned by the control center to amplify-and-forward what it receives immediately. Under this scenario, the outage probability of the cooperative transmission pair of the primary and secondary transmitters is derived. The numerical simulation of the outage probabilities as a function of primary transmission probability ps, power allocation ratio ξ between the primary and secondary users, and the numbers of the primary and secondary users are given respectively. The results show that the optimal system performance is achieved under the conditions of ξ=0.5 and the numbers of the primary and the secondary users being equal.关键词
协作通信/中断概率/放大前传/认知网络Key words
cooperative transmission/outage probability/amplify-and-forward/cognitive network分类
信息技术与安全科学引用本文复制引用
鲍煦,宋铁成,沈连丰..基于多用户认知网络的中断概率性能研究[J].东南大学学报（英文版）,2010,26(3):375-378,4.基金项目
The National Natural Science Foundation of China (No.60972026), the Natural Science Foundation of Jiangsu Province (No.BK2008289), Specialized Research Fund for the Doctoral Program of Higher Education (No.20090092110009). （No.60972026）
