Enhanced spectrum sensing using a combination of energy detector,matched filter and cyclic prefix  

作　　者：Ghassan Alnwaimi Hatem Boujemaa 

机构地区：[1]King Abdulaziz University,Saudi Arabia [2]COSIM Lab,SUPCOM,Tunisia

出　　处：《Digital Communications and Networks》2020年第4期534-541,共8页数字通信与网络（英文版）

摘　　要：In this paper,we propose a sensing scheme based on energy detection,matched filter and cyclic prefix.Both Equal Gain Combining(EGC)and optimal combination of the aforementioned detectors are investigated in cooperative and non-cooperative spectrum sensing scenarios.In packet transmission systems such as OFDM(Orthogonal Frequency Division Multiple access)systems,the proposed scheme takes advantage of utilizing more samples than individual detectors,i.e.,cyclic prefix,training or pilot samples,and data payload samples.The proposed combine-sensing scheme offers higher detection probability and lower false alarm probability,as compared with the performance of individual detectors over the same frame duration.Simulation results are congruent with the theoretical curves and confirm the validity of our derivations.

关 键 词：Cooperative spectrum sensing Energy detector Matched filter Cyclic prefix CFAR CDR Cognitive radio networks False alarm probability Detection probability 

分 类 号：TN91[电子电信—通信与信息系统]