Power Allocation Based-on Multi-user Fairness in Cognitive Wireless Networks
Huan Wang · Computer Technology and Development · 2011
Studies the power allocation for insuring the multi-user fairness.In order to minimize the gap between the user expected rate and achived rate,an optimization model is proposed.A centralized algorithm 1 of equal power allocation is presented,then the centralized algorithm 2 is proposed to reduce the number of iterations.At last,a distributed algorithm 3 is given to solve th optimal problem.The simulation results show that the three algorithms converge to the optimal solution,and the centralized algorithm 2 significantly less than the number of iterations of centralized algorithm 1.Distributed power allocation algorithm can reduce the implementation complexity.