关键词: OFDM, 资源分配, 半分布式, 系统容量

Abstract: In the downlink channel of LTE system, OFDM technology is adopted. In order to solve the problem of LTE inter-cell interference, the authors present a multi-cell half-distributed resource allocation algorithm by investigating and comparing many resource allocation strategies, which is simple and practical. At the cost of spectrum efficiency, this algorithm uses the mutual information between base stations and binary power control strategy to coordinate the resource allocation which alleviates inter-cell interference and improves system capacity. Through the algorithm in the LTE system level simulation platform implementation, simulation results show that the new algorithm can improve overall throughput by thirteen percent. Thus, it prove that this algorithm has its advantages.

Key words: OFDM, resource allocation, half-distributed, system capacity