Analysis of Cognitive Radio Spectrum Access for Emergency Communication System

摘要：

We model and study a new system in which cognitive radio technology and traditional emergency communication network are combined together. A new dynamic spectrum access strategy is also proposed which has three priority levels on condition that the emergency users, primary users and secondary users are sharing one spectrum pooling. In this paper, the users’ behavior is modeled by three-dimensional Markov chains. Moreover, the blocking and dropping probabilities of users based on the users connection rate are derived as the performance metrics. In addition, we evaluate the spectrum utilization of the system. Simulation results show that this system can effectively guarantee the emergency users’ quality of service and improve the spectrum utilization.

关键词： emergency communication cognitive network spectrum access three-dimensional Markov model

作者: Peng HAN Hua TIAN Wei XIE

作者单位: Institute of Communications Engineering, PLA University of Science and Technology Nanjing 210007, Ch Institute of Communications Engineering, PLA University of Science and TechnologyNanjing 210007, Chi

会议类型: 国际会议

会议名称: 2011年无线通信与信号处理国际会议(WCSP 2011)

会议地点: 南京

会议语种:英文

页码: 1-6

在线出版日期: 2011-11-09（万方平台首次上网日期，不代表论文的发表时间）