Analysis and Performance Evaluation of PSO for Spectrum Allocation in CRN

Design of an optimal spectrum allocation mechanism is a key issue for realizing dynamic spectrum access in cognitive radio network. In this paper, the optimal solution to spectrum allocation problem is achieved with the objective to determine a finest spectrum sharing of the accessible subcarriers to the different secondary users (unlicensed users) using Particle Swarm Optimization (PSO) algorithm. The results show considerable improvement in the overall transfer rate of the system.