Abstract
This paper presents a new resource allocation problem in Long Term Evolution (LTE) down-link transmission. It aims at maximizing the total system capacity with fairness consideration. The optimization problem is divided into sub-optimal ones for complexity mitigation. Firstly, a recursive Physical Resource Block (PRB) allocation scheme is introduced. After PRB allocation, the Evolved Node B (eNodeB) aggregates the unused sub-carriers by each User Equipment (UE) to construct a virtual PRB which is allocated to the UE with the highest current throughput to the past average throughput ratio for fairness improvement. Secondly, a power allocation procedure is performed. Finally, a more appropriate Modulation and Coding Scheme (MCS) is selected. Simulation results show that the proposed algorithm provides better performance than other existing ones such as Min-MCS, Max-SINR and PF.
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