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题(中、英文)目 MIMO无线通信系统分层空时分组码的研究和实现

The Research and Implementation of MIMO Wireless

System Based on Layered Space-Time Block Code

作者姓名王丹学校指导教师姓名职称卢小峰副教授
工程领域电子与通信工程企业指导教师姓名职称陈国涛高工
论文类型应用研究提交论文日期二○一二年十二月
摘要

多输入多输出(MIMO)技术已经成为下一代移动通信领域研究的热点,原因在
于该技术能够在系统带宽不变的情况下,成倍的提升系统的容量和频谱利用率。
但 MIMO 系统带来巨大容量的同时也增加了接收端信号检测的难度。
论文首先介绍了 MIMO 系统传输模型,论述了 MIMO 的系统容量,然后重点研
究了 MIMO 中常用的三种空时编码技术:空时分组码(STBC),分层空时码(V-BLAST),
以及分层空时分组码(LSTBC),分别对其进行了理论分析,并运用 Matlab 仿真工
具进行仿真和对比说明。
最后,利用 DSP+FPGA 的硬件平台,对基于 QR 分解的 MIMO 无线通信系统分层
空时分组码的检测算法进行了实现,主要包括基于 ADSP-TS201 的矩阵分解算法设
计与实现和基于 AlteraEP2AGX260 的译码模块设计与实现,详细描述了算法流程,
硬件配置方案,以及各模块的功能和实现情况。
关键词:多入多出 QR 分解分层空时分组码数字信号处理+现场可编程
门阵列
Abstract

Multiple Input Multiple Output (MIMO) technology has e one of the key
techniques in the study of the next-generation munication system, for this
technology under the situation of the system bandwidth invariable, Its capacity and
spectrum utilization can fold ascension. But MIMO system also brings a huge capacity
but at the same time, it increases the difficulty of signal detection in the receiver.
This paper starts with the model specification of the MIMO system. and then
discusses the MIMO system capacity, mainly focus on the research and simulation of the
MIMO technology of three kinds monly used space coding technology:
Space-time block coding (STBC), Layered space-time coding (V-BLAST), and Layered
space-time block coding (LSTBC). Finally, comparison of the simulation curves of
V-BLAST-OFDM,LSTBC-OFDM and STBC-OFDM system is made in MATLAB.
Finally, with the hardware platforms of DSP+FPGA, based on QR position in
MIMO munication system detection algorithm of layered space-time codes
have finished. It mainly includes two parts: the matrix position algorithm that
based on ADSP - TS201, and the decoding module design and implementation that based
on AlteraEP2AGX260.