A historical-information-based algorithm of dynamic spectrum allocation for cognitive radio
Huang Qiu-yan · Journal of Chongqing University of Posts and Telecommunications · 2009
In the process of radio spectrum allocation,the historical allocation information often contains lots of useful information which can be a reference for future spectrum allocation to improve performance of spectrum allocation algorithm.This paper introduces the cognitive radio network model based on conflict graph in graph theory,analyzes the performance of dynamic spectrum allocation algorithm in cognitive radio when considering historical allocation information,and presents the spectrum allocation algorithm according to proportion fairness.Simulation results show that this historical-information-based algorithm has better improvement in performance of system sum bandwidth and fairness,and shows good convergence in distributed environment.