Aggregated Spectrum Assignment Algorithm Based on Chaotic System in Cognitive Radio

To solve the discontinuity of available spectrum in the cognitive radio network, a graph coloring based on aggregation spectrum assignment method is proposed. By aggregate discontinuous spectrum holes in the cognitive network, the proposed method assigns the spectrum according maximizing throughput and fairness. Compared with the traditional continuous spectrum assignment method, it can enhance the performance in the throughput and Fairness. The method is analyzed in theory. Then simulation results verified the feasibility and validity of the method.