Resource Allocation for OFDM System Based on Evolutionary Algorithm

The conventional resource allocation method is so-called two-step method in OFDM system. The two-step method can reduce the computational complexity. However, it´s solution accuracy is not very good. This paper proposes an improved two-step method. This method combines evolutionary algorithm with simulated annealing thought, and can take into account the sub-carrier distribution and power distribution at the same time. Meanwhile this paper improves the evaluation criteria for fairness, so that the algorithm can better balance between capacity and fairness. Numerical experiments show that the proposed algorithm is effective.