Field programmable gate array implementation of spectrum allocation technique for cognitive radio networks ?
To maximize the network utilization, spectrum allocation technique fairly allocates the channels to secondary users. SA problem is solved by Differential Evolution algorithm and compared the performance with PSO and FA. DE improved the quality of solution and time complexity by 29.9%, 242.32% and 19.04%, 46.3% compared to PSO and FA. We propose FPGA based coprocessor for DE-SA IP and interfaced to PowerPC. The coprocessor accelerates SA task by 76.79105x and 5.196.91x compared to float and fixed DE-SA software.
spectrum allocation cognitive radio differential evolution system on chip hardware accelerator