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基于容量最大化的多用户MIMO-OFDM子载波分配算法
管张均,周希朗
0
(上海交通大学 电子工程系,上海 200240)
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。
关键词:  MIMO-OFDM  子载波分配  匈牙利算法  容量最大化
DOI:
基金项目:
Subcarrier allocation algorithms for multiuser MIMO-OFDM systems based on maximum of capacity
GUAN Zhang-jun,ZHOU Xi-lang
(Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 2 00240,China)
Abstract:
A subcarrier allocation algorithm is presented for multiuser MIMO-OFDM communication network based on maximum of the system sum capacity. Judging pa rameters 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 syst em sum capacity is globally optimal and easy to implement,and also has low compl exity.
Key words:  MIMO-OFDM  subcarrier allocation  Hungarian method  maximum of capacity
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