基于有限反馈的多用户MIMO调度策略研究与验证.doc

文档介绍：
基于有限反馈的多用户 MIMO 调度策略研
究与验证
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(北京邮电大学电子工程学院,北京 100876)
摘要:多天线系统以其利用空间资源的独特优势,成为无线通信近十多年的研究热点。由于
多天线能够在有限的时频资源下,获得更高的通信速率和可靠性,MIMO(Multiple Input
Multiple Output)技术已经成为新一代移动通信系统标准 IMT-Advanced 中的核心物理层技
术之一。本论针对多用户 MIMO 系统下行链路中,特别是在发射端仅仅拥有各个用户有限的
信道状态信息的条件下,基站如何进行用户调度,如何合理地设计各个用户的预编码等问题
展开研究。本文的主要贡献在于提出灵活的多用户 MIMO 调度策略,在开销略微增大的情况
下基于用户信道状态信息的反馈,实现多用户 MIMO 调度并使系统得到 5%吞吐率的提升。
关键词:多用户 MIMO;灵活调度;有限反馈
中图分类号:
15
Research and Validation of MU-MIMO Scheduling Strategy
based on Limited Feedback
CHEN Dongjian, WEN Zhigang
(School of Electronic Engineering,Beijing University of Posts and munications,Beijing
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25
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100876)
Abstract: With its unique advantages of the use of space resources, multi-antenna system had e
a research hotspot of munication over the past decade. Since multi-antenna can achieve
higher rate and reliability under limited time-frequency resources, MIMO (Multiple Input Multiple
Output) technology has e one of the core physical layer technologies in next generation mobile
communication system IMT-Advanced. For downlink multi-user MIMO system, especially on the
conditions that with only limited channel state information at transmitter, this paper mainly make
research on how to schedule users and how to properly design the precoding matrix of each user. The
main contribution of this paper is to propose a flexible mul