Spectrum sensing in cognitive radio:use of cyclo-stationary detector
作者： Manish B Dave
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摘要: Cognitive radio allows unlicensed users to access licensed frequency bands through dynamic spectrum so as reduce scarcity. This requires intelligent sensing techniques like co-operative which makes use of information from number users. thesis investigates the cyclo-stationary detector and its simulation in MATLAB for user detection. Cyclo-stationary enables operation under low SNR conditions thus saves need consulting more Simulation results show that implementing help better performance terms The is used evaluation Digital Video Broadcast-Terrestrial (DVB-T) signals. Generally, DVB-T specified IEEE 802.22 standard (first based on cognitive radio) VHF UHF TV broadcasting spectrum. further extended find optimal a scenario optimize detection probability overhead leading utilization resources. gradient descent algorithm particle swarm optimization (PSO) technique are put an optimum value threshold. both these schemes evaluated out fares better.
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