Enhanced PF Scheduling Algorithm for LTE Downlink System

A key feature of Long Term Evolution (LTE) system is the adoption of advanced Radio Resource Management (RRM) procedures in order to increase the system performance. Packet scheduling mechanisms play a fundamental role, because they are responsible for choosing how to distribute radio resources among different stations. In this paper a modified Proportional Fair (PF) scheduling algorithm is proposed for capacity enhancement for LTE system and compared with the PF downlink scheduler, which is characterized by high fairness but with low spectral efficiency. Simulation results show that the proposed algorithm enhances the overall system capacity and also provides fairness in the distribution of the resources. The proposed algorithm improves the average cell throughput by more than 10.3 %, with approximately the same fairness level (2.6 % reduction) as compared with the conventional PF scheduling algorithm.