用于OFDMA蜂窝系统的多小区自适应资源分配算法

提出了一种用于正交频分多址通信系统下行链路的多小区自适应资源分配算法(MARA)。为了降低系统复杂度，将子信道分配和功率分配分开实现，在小区内部进行动态子信道分配，并以单小区子信道分配结果为基础在相邻小区同频用户中进行功率分配。将非合作博弈论引入到多小区功率分配中，给出了基于代价函数的多小区分布式功率分配算法。通过协调相邻小区间同频子信道的发送功率，抑制小区间干扰，提高无线资源利用率。仿真结果表明，与已有算法相比，本文提出的算法可以提高系统吞吐量。

A Multicell Adaptive Resource Allocation Scheme for OFDMA Cellular System

A multicell adaptive resource allocation (MARA) scheme was proposed for downlink Orthogonal Frequency Division Multiple Access (OFDMA) cellular system. In order to reduce the complexity of the system, the processes of subchannel allocation and power allocation was separated. The subchannel was dynamically allocated in every cell, and then the transmit power was allocated among the co-frequency users of adjacent cells based on the results of subchannel allocation. The non-cooperative game theory was employed in the multicell power allocation, and a multicell distributed power allocation algorithm was presented via pricing function. Transmit power levels of co-subchannels in the adjacent cells were coordinated, in that inter-cell interference was mitigated and radio resource utility was improved. Simulation results show that the MARA could increase throughput of the system.