Abstract
This paper presents a downlink proportional fairness centralized processing resource allocation algorithm to enhance the throughput and guarantee the fairness in wireless networks for the C-RAN (Collaborative Radio Access Network) systems. The proposed sub-carrier allocation algorithm utilizes the baseband resource pool of C-RAN to achieve the centralized allocation of sub-carriers. In order to reduce the interference of edge users that share the same sub-carrier, and enhance the system throughput, the most shared sub-carriers are allocated to the user of central cell. The system throughput can be improved at the sacrifice of fairness decrement. Simulation results show that the proposed algorithm can obtain better performance in throughput than conventional downlink algorithms.