Decentralised binary detection with non-constant SNR profile at the sensors
International Journal of Sensor Networks
Channel aware decision fusion in wireless sensor networks
IEEE Transactions on Signal Processing
Some integrals involving the function (Corresp.)
IEEE Transactions on Information Theory
Cooperative spectrum sensing in cognitive radio networks: A survey
Physical Communication
Cognitive radio: brain-empowered wireless communications
IEEE Journal on Selected Areas in Communications
Energy-efficient detection in sensor networks
IEEE Journal on Selected Areas in Communications
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In this paper, the performance of a weighted cooperative spectrum sensing WCSS scheme with censoring of cognitive radios CRs in Rayleigh fading is analysed. CRs which employ energy detectors EDs are censored depending on the quality of reporting channels. Each CR makes a hard decision about primary user PU using EDs and transmits the information to FC using BPSK signalling if that CR is selected to transmit. The weight factors of selected CRs are chosen based on the average SNR profile of the CR and integrated with decisions sent by the corresponding CRs at FC. Combined effects of censoring and SNR-based WCSS have been evaluated and compared with conventional CSS scheme. We develop a simulation framework for evaluating the performance of WCSS and CCSS with censoring in terms of missed detection and total error probabilities for various values of network parameters under perfect and imperfect channel estimation.