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TheResearchofSpatialSpectrumEstimationAlgorithminS
智能天线技术是第三代移动通信系统的关键技术之一,也是国内外热门的研究课题。由于无线移动通信的信道传输环境具有复杂性和不确定性,存在多径衰落和时延扩展,因此造成了符号间串扰、同信道干扰、多址干扰等,这些干扰降低了链路性能和系统容量,智能天线技术是解决以上问题的方法之一。 本文首先阐述了智能天线和白适应波束形成的基本理论,然后对自适应算法进行了研究。对一些基本的自适应算法最小均方算法、恒模算法及递推最小均方算法进行了分析讨论,用计算机仿真的结果论证了算法的性能。针对相干干扰介绍了空间平滑技术,对传统的相干干扰抑制方法-空间平滑法进行了分析,采用改进算法有效降低了空间平滑算法的运算量。对信号波达方向(DOA)的估计是智能天线研究的另一关键问题。第四章在介绍了阵列信号处理方法的基础上,先简单介绍了Bartlett、Capon、MUSIC等空间谱估计算法,分析了信源数目过估计与欠估计情况下的MUSIC算法性能,提出一种改进算法,在信源数目有误差的情况下该算法的性能良好。第五章针对多径干扰环境,在分析MMUSIC算法的基础上,本文提出了基于低秩矩阵逼近法的改进MUSIC算法(In this paper, firstly, the author illustrates the principles of smart antenna and adaptive beam forming, and then introduces some typical adaptive algorithms, the LMS ,CMA and RLS algorithms are analyzed and discussed and simulate them in the computer to prove their capability. but they have the disadvantage of high complexity, so they are not fit for practice. The paper analyses the conventional method rejecting spatial smoothing coherent interfering signals, which is spatial smoothing technique)
- 2009-07-02 22:43:06下载
- 积分:1
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OFDMMATLAB111111
说明: OFDM仿真程序,在matlab环境下运行,此为记事本文件,复制到matlab的M文件即可运行。(OFDM simulation program, run in the matlab environment, this is Notepad file, copy it to matlab to run M-files.)
- 2008-11-20 09:51:03下载
- 积分:1
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srh2sms123
Convert SRH-2D model outputs into an SMS friendly format
- 2010-11-27 02:55:29下载
- 积分:1
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chapter123
SIMPLE MORPHOLOGY OPERATIONS
- 2013-02-26 16:32:24下载
- 积分:1
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J6_2012--Kalman-interpolation
卡尔曼滤波器进行信道估计的一篇文章,适用于OFDM-MIMO系统。(Kalman filter for channel estimation in an article for OFDM-MIMO systems.)
- 2013-12-22 20:53:26下载
- 积分:1
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KNN
一个很好的KNN算法的matlab程序,供参考(it is a good program writting with matlab under windows)
- 2013-12-03 15:58:25下载
- 积分:1
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music
自己编写的music算法程序,注释很详细,很容易理解。(I have written music algorithm program, notes in great detail, it is easy to understand.)
- 2015-03-17 13:00:07下载
- 积分:1
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pca
基于matlab的主成分分析源程序进行贡献度分析(The principal component analysis based on matlab source contribution analysis conducted)
- 2013-06-12 08:44:12下载
- 积分:1
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pcf1
说明: 光子晶体光纤的数值模拟,用matlab计算光子晶体光纤的模场分布、色散等参数(Numerical simulation of photonic crystal fiber, using Matlab to calculate the mode field distribution, dispersion and other parameters of photonic crystal fiber)
- 2019-06-20 15:36:44下载
- 积分:1
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pnet_getvar
Gets any matlab variable (number-, cell-, struct- or object -array) from pnet. This file(s) is part of the tcp_udp_ip toolbox
- 2011-08-08 17:50:23下载
- 积分:1