Optimization of Multiband Spectrum Sensing for Cognitive Radio Networks under Sensing Capability Constrains  

作　　者：Zhao Chenglin Yao Haipeng Zhou Zheng 

机构地区：[1]Key Lab of Universal Wireless Communications, Ministry of Education, Wireless Network Lab, Beijing University of Posts and Telecommunications, Beijing 100876, P. R. China

出　　处：《China Communications》2010年第5期129-136,共8页中国通信（英文版）

摘　　要：This paper addresses the problem of joint optimization of subchannel selection and spectrum sensing time for multiband cognitive radio networks under the sensing capability constrains. In particular, we construct a multiband spectrum sensing framework, and derive the probabilities of detection and false alarm taking the different subchannel gain into account. Furthermore, we formulate the multi- band sensing as a two-parameter optimization prob- lem under the sensing capability constrains and guaranteeing the QoS of the secondary user. Moreover, we develop a semi-analytical optimization scheme to achieve the optimal solution.

关 键 词：multlbiand sensing cognitive radio detection probability false alarm probability 

分 类 号：TN92[电子电信—通信与信息系统] TN929.5[电子电信—信息与通信工程]