Optimization Analysis of Improved Energy Detection based Cooperative Spectrum Sensing Network in Nakagami-m and Weibull Fading Channels
M. Ranjeeth, Srinivas Nallagonda, S. Anuradha · Journal of Engineering Science and Technology Review · 2017
In this paper, performance analysis for optimization of cooperative spectrum sensing (CSS) network in Nakagami-m and Weibull fading environments and comparison between them are presented.First, we derive the novel analytic expressions for probabilities of missed detection and false alarm for CSS network in both fading channels, assuming improved energy detector (IED) and selection combining (SC) diversity at each cognitive radios (CRs).Next, we optimize the network parameters such as number of CRs, energy detector arbitrary parameter, and normalized detection threshold at CR to obtain the optimal performance of CSS network.The impacts of several network parameters like: multiple antennas at each CR, number of CRs in CSS network, Nakagami and Weibull fading parameters, and sensing channel SNR on the performance of CSS network are investigated.The performance comparison between conventional and improved energy detectors has also been highlighted in this paper.