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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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1DTEM
一维瞬变电磁数据处理程序,烟圈反演方法,效果不错(a program of tem)
- 2020-09-27 20:17:46下载
- 积分:1
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dui
说明: 队列的新的操作,用个数number和队尾指针rear来判队空队满(Queue new operation, number and team with the number of rear end of pointers to sub-team full of air force)
- 2010-04-27 18:42:35下载
- 积分:1
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20100816234956_UM_2.4.2.35
估计过来看的精神分裂国家结果看来是大方监管机构 股市大幅交给若结果是劳动纠纷(Estimates of schizophrenic country come to see the results of regulatory agencies appear to be generous to the stock market if the result is a significant labor disputes)
- 2013-12-07 19:21:22下载
- 积分:1
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IIR
无限脉冲响应数字滤波器IIR算法c语言.c文件(Infinite impulse response IIR digital filter algorithm c language)
- 2014-12-22 16:59:52下载
- 积分:1
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DOA_esprit
雷达信号到达角估计的MATLAB代码,进行了多参数的对比仿真和结果比较(Radar signal DOA estimation MATLAB code for the comparison of simulation and multi-parameter comparison results)
- 2011-06-19 08:57:14下载
- 积分:1
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HistogramPCalculation
应用MATLAB(或C)语言编写一幅灰度图像直方图统计程序(Application of MATLAB (or C) written in a gray-scale image histogram statistics program)
- 2011-05-28 14:17:26下载
- 积分:1
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Huffman_Node
解决霍夫曼树的编码问题,二进制和十进制数可以相互转换(Huffman coding problem solving tree, binary and decimal numbers can be converted to each other.)
- 2015-01-05 16:53:21下载
- 积分:1
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1
说明: 倒立摆数学模型及分析及建模叙述,主要是过程(Pendulum mathematical model and analysis)
- 2014-11-26 22:29:14下载
- 积分:1
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jianyujiaoben
一个samp的监狱脚本,机不可失失不再来!大家都拿去看看吧(A script samp prison)
- 2014-01-29 20:26:21下载
- 积分:1