文档介绍：双发射天线正交空时分组码系统性能分析
工学院
电子科学与技术(光电方向) 2009届
摘要本文首先介绍了正交空时分组码(STBC)的编码技术的理论,仿真实现2发n收的MIMO系统性能,证实STBC能得到较大分集增益;其次,采用基于训练序列的信道估计方法对未知信道衰落因子进行估计,分别研究了最小二乘法(LS算法)和最小均方误差(MMSE算法)两种算法;最后,采用基于最大容量准则的最优天线选择算法实现发送端的天线选择。对上述内容进行matlab仿真分析,仿真结果表明:多根天线接收效果更好,并且在加上天线选择后性能有进一步提高。
在理论分析和仿真实验的基础上,本文还提出了基于最小平方(LS) 算法的FPGA实现,利用FPGA 实现了一种适用于MIMO系统的信道估计算法,主要研究了如何利用FPGA 实现LS 算法,包括算法的介绍、方案的形成、FPGA 实现的处理流程、FPGA 实现结果及分析;同时,还研究了基于最小误码率准则的天线选择算法的FPGA实现,整个系统采用Verilog HDL语言进行代码设计,软件开发环境为altera公司的Quartus 。
关键词 MIMO 正交空时分组码信道估计 LS算法 MMSE算法 FPGA实现天线选择
A dual antenna orthogonal space-time block code system performance analysis
Liang Peng
0915261019,electronic science and technology ,Major,2013
College of Engineering Huaqiao University
Abstract:At first, this paper introduces the orthogonal space-time block codes (STBC) coding technique theory, the simulation implementation 2 hair n MIMO system performance, and he confirmed that the STBC can get larger diversity gain; Secondly, based on training sequence channel estimation methods to estimate the unknown channel fading factor, respectively studied the method of least square (LS) and minimum mean square error (MMSE) algorithm two kinds of algorithms; Finally, based on the optimal antenna selection algorithm to achieve maximum capacity criteria send the antenna selection. Matlab simulation analysis on the content, the simulation results show that the multiple antenna reception is better, and bined with antenna selection have to further improve performance.
On the basis of theoretical analysis and simulation experiment, this article also puts forward the FPGA realization based on least square (LS) algorithm, using FPGA to realize the a channel estimation algorithm for MIMO system, the main research how to use FPGA to realize the LS algorithm, including algorithm is introduced, the formation of solution, and the FPGA implementation processing, FPGA implementation results and analysis; At the same time, also studied the rule of minimum er