High Capacity Spectrum Sensing Framework Based on Relay Cooperation  

作　　者：Wu Xuanli Han Xingling Fabrice Labeau 

机构地区：[1]School of Electronic and Information Engineering, Harbin Institute of Technology, Harbin 150001, China [2]Department of Electrical and Computer Engineering, McGill University, Quebec, Canada

出　　处：《China Communications》2016年第8期117-126,共10页中国通信（英文版）

基　　金：supported in part by the National Basic Research Program of China(973 Program),under grant No.2013CB329003;National Nature Science Foundation of China under grant No.61301100;Hydro-Quebec,the Natural Sciences and Engineering Research Council of Canada,and Mc Gill University in the framework of the NSERC/Hydro-Quebec Industrial Research Chair in Interactive Information Infrastructure for the Power Grid under grant No.IRCPJ406021-14

摘　　要：In order to reduce interference to primary users and provide better performance of detection probability and channel capacity in multi-user cooperative spectrum sensing networks, a high capacity spectrum sensing framework is proposed based on the analysis of amplification factors on the performance of detection probability and channel capacity. Thanks to the energy concentration property of chirp signals in the Fractional Fourier Transform(Fr FT) domain, sinusoidal signal and different chirp signals are utilized for primary user and cognitive users, respectively. Hence, spectrum sensing and signal transmission can be performed simultaneously in our proposed framework. Simulation results show that compared with the previous relay-based framework, the modified cooperative spectrum sensing framework can improve the detection probability significantly, and the channel capacity can also be improved. Moreover, the amplification factor can be used to realize the tradeoff between detection probability and channel capacity in our proposed framework.In order to reduce interference to pri- mary users and provide better performance of detection probability and channel capacity in multi-user cooperative spectrum sensing net- works, a high capacity spectrum sensing frame- work is proposed based on the analysis of ampli- fication factors on the performance of detection probability and channel capacity. Thanks to the energy concentration property of chirp signals in the Fractional Fourier Transform （FrFT） domain, sinusoidal signal and different chirp signals are utilized for primary user and cognitive users, re- spectively. Hence, spectrum sensing and signal transmission can be performed simultaneously in our proposed framework. Simulation results show that compared with the previous relay-based framework, the modified cooperative spectrum sensing framework can improve the detection probability significantly, and the channel capacity can also be improved. Moreover, the amplification factor can be used to realize the tradeoff between detection probability and channel capacity in our proposed framework.

关 键 词：cognitive radio cooperative spectrum sensing energy detection detection probability channel capacity 

分 类 号：TN[电子电信]