Spectrum Sensing in Multi-user Cognitive Radio Networks
نویسندگان
چکیده
منابع مشابه
Secure Collaborative Spectrum Sensing in the Presence of Primary User Emulation Attack in Cognitive Radio Networks
Collaborative Spectrum Sensing (CSS) is an effective approach to improve the detection performance in Cognitive Radio (CR) networks. Inherent characteristics of the CR have imposed some additional security threats to the networks. One of the common threats is Primary User Emulation Attack (PUEA). In PUEA, some malicious users try to imitate primary signal characteristics and defraud the CR user...
متن کاملSpectrum Sensing in Multi-user Cognitive Radio Networks
Spectrum sensing is studied for multi-user cognitive radio networks in this paper. An improved spectrum sensing method----energy-cooperative detection method is developed, which combines the double threshold energy detecting method with the “OR” fusion decision rule. The simulation is done for both AWGN channel and Rayleigh channel, and the advantages of the improved method are verified.
متن کاملsecure collaborative spectrum sensing in the presence of primary user emulation attack in cognitive radio networks
collaborative spectrum sensing (css) is an effective approach to improve the detection performance in cognitive radio (cr) networks. inherent characteristics of the cr have imposed some additional security threats to the networks. one of the common threats is primary user emulation attack (puea). in puea, some malicious users try to imitate primary signal characteristics and defraud the cr user...
متن کاملUser Selection Based Cooperative Spectrum Sensing for Cognitive Radio Networks
In cooperative spectrum sensing, information from several cognitive users is used for detection of the primary user. To reduce sensing overhead and total energy consumption, it is recommended that users with good performance be selected so as to optimize the probability of detection. One method of selecting the cognitive users with the best detection performance is proposed in this paper. It fo...
متن کاملSensing Orders in Multi-User Cognitive Radio Networks
In multi-channel Cognitive Radio Networks (CRNs), when the cognitive radio receivers cannot simultaneously sense more than one out of the many possible (groups of) channels, an important challenge is to determine a sensing order for each Cognitive User (CU) so as to optimize a given performance metric. The sensing-order problem is compounded in multi-user CRNs where the multiple users in the ne...
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ژورنال
عنوان ژورنال: Communications and Network
سال: 2013
ISSN: 1949-2421,1947-3826
DOI: 10.4236/cn.2013.53b2006