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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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meanshift1
meanshift在matlab中的源代码(meanshift the source code in matlab)
- 2011-05-10 11:59:38下载
- 积分:1
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rbpfSlam
Giving a Compass to a Robot
Probabilistic Techniques for Simultaneous Localisation
and Map Building(SLAM) in Mobile Robotics
- 2020-09-18 16:47:57下载
- 积分:1
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alphatrimmed1
image processing program filter
- 2014-01-20 00:31:22下载
- 积分:1
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FOC
这是一个运用矢量控制方法实现异步电机调速的matlab模型,可以输出理想波形,绝对正确。(This is an asynchronous motor speed regulation using vector control method of matlab model, can output the ideal waveform, absolutely right.
)
- 2020-10-28 12:49:58下载
- 积分:1
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cp_als
利用张量cp分解修复数据,对数据进行插补或预测(Use tensor cp decomposition to repair data, interpolate or predict data)
- 2021-03-15 10:09:22下载
- 积分:1
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robertpreittsobel
this is the programs for robert prewwitt sobel operators for images from gonazalvez book digital image processing
- 2010-10-30 12:55:29下载
- 积分:1
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secant
MATLAB正割法求非线性方程,为一个函数的通用形式(Secant method for solving nonlinear equations MATLAB)
- 2010-12-06 16:29:52下载
- 积分:1
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gantry2
Gantry detector tilt correction
- 2013-01-03 02:55:56下载
- 积分:1
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chapter23
ELMAN算法,完整的,适合学习ELMAN的初级matlab用户参考(ELMAN algorithm)
- 2015-01-13 15:20:12下载
- 积分:1