Spatial Correlation Analysis between the Secondary users in Distributed Cognitive Radio Networks
In cognitive radio (CR) networks, spectrum sensing is a key technology to detect the presence of the Primary user (PR). Cooperative spectrum sensing has been largely investigated because of its success in resolving hiding terminal problem. In cooperative spectrum sensing the distributed CR network has a better adaptability than centralized CR network. In the distributed networks, secondary user need exchange information with his neighbors, so the correlation between neighbors is deserved to be investigated. In the existing scheme, the correlation analysis is mostly based on the distance, and secondary users know the prior location information of PR and other users. In the practical environment the location information maybe not achieved, here we will give a computing method for spatial correlation coefficient based on location-estimating. Simulation results suggest that the proposed method is also effective without location information.
Cognitive Radio Spatial Correlation Location Estimation
Yang An Zhan Gao
Institute of Communications Engineering, PLA University of Sci. & Tech Nanjing, China
国际会议
哈尔滨
英文
2574-2577
2011-12-24（万方平台首次上网日期，不代表论文的发表时间）