基于容量最大化的多用户MIMO-OFDM子载波分配算法  

Subcarrier Allocation Algorithms for Multiuser MIMO-OFDM Systems Based on Maximum of Capacity

作　　者：管张均[1] 周希朗[1] 

机构地区：[1]上海交通大学电子工程系,上海200240

出　　处：《电讯技术》2011年第9期127-130,共4页Telecommunication Engineering

摘　　要：针对多用户MIMO-OFDM通信网络,提出了一种基于系统和容量最大化的子载波分配算法。通过对MIMO-OFDM系统和容量公式进行分析,提取出子载波分配的判决参数,再利用匈牙利算法对子载波进行分配,同时分析了分配后系统平均容量的统计特性。为了兼顾公平,又提出了传输速率最小的用户传输速率最大化的子载波分配算法。仿真结果表明,所提容量最大化算法能使系统和容量达到全局最大值,且具有较低的复杂度。A subcarrier allocation algorithm is presented for multiuser MIMO - OFDM communication network based on maximum of the system sum capacity. Judging parameters of subcarrier allocation are extracted from the capacity formulas, and subcarriers are allocated by Hungarian method. The statistical characteristic of the system average capacity is also analysed. For fairness concerning, another subcarrier allocation algorithm is proposed to maximize the minimum user＇s rate. Simulation results show that the proposed algorithm to maximize the system sum capacity is globally optimal and easy to implement, and also has low complexity.

关 键 词：MIMO-OFDM 子载波分配 匈牙利算法 容量最大化 

分 类 号：TN929.5[电子电信—通信与信息系统]