Optimization of secondary user capacity under efficient bandwidth utilization in CR through ALC-PSO

In cognitive radio network, through efficient spectrum utilization the analysis of secondary user (SU) capacity maximization is an important work. In this paper we analyze the maximization of the secondary user capacity through threshold (λ opt ), probability of detection (Pd) and number of user (N) in the dual threshold scheme of cooperative spectrum sensing by considering two priority scheme PUOP (primary user on priority) and SUOP (secondary user on priority) in different channel fading condition with the new evolutionary optimization technique ALC-PSO.