上行多用户MIMO-OFDMA系统调度与预编码设计  

Uplink Scheduling and Precoding Design in Multiuser MIMO-OFDMA Systems

作　　者：王晓婷[1,2] 王文博[1] 颜智[1] 郑侃[1] 李俊文[3] 

机构地区：[1]北京邮电大学泛网无线通信教育部重点实验室,北京100876 [2]北京跟踪与通信技术研究所,北京100094 [3]西安通信学院,西安710106

出　　处：《系统仿真学报》2010年第12期2904-2908,共5页Journal of System Simulation

基　　金：国家自然科学基金(60802082)

摘　　要：提出了一种基于码书的最大化吞吐量预编码与Round-Robin行列式多用户调度相结合的方案。利用行列式调度算法效用函数以及预编码酉阵码书的特点,两者能够独立设计,同时相互结合提高系统的整体性能。将方案在一个多小区MIMO-OFDMA系统中进行仿真评估,并设计改进的MMSE-SIC接收机。仿真结果表明联合设计方案能够大大增加系统吞吐量,同时改善小区边缘用户的传输性能,有利于公平性的满足。An uplink multiuser scheduling and precoding scheme was proposed which combined throughput maximization precoding based on the codebook and determinant multiuser scheduling.Through utilizing of the determinant utility function and the unitary codebook,the degisn of the multiuser scheduling and the precoding design could be independent while the combination of which could improve the system performance.The scheme was evaluated in a multi-cell MIMO OFDMA system simulation platform in which a modified MMSE-SIC receiver was implemented.The simulation results show that the design can improve the system throughput greatly and enhance the transmission performance of cell edge users which benefits for the fairness requirement.

关 键 词：多用户调度 预编码 多输入多输出 正交频分多址 串行干扰消除 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]