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DSPII_USTC_01
传统的宽带信号中抑制正弦干扰的方法是采用陷波器(notch filter),为此需要精确知道干扰正弦的频率.然而当干扰正弦频率是缓慢变化时,且选频率特性要求十分尖锐时,则最好采用自适应噪声抵消的方法.下图是用一个二阶FIR的LMS自适应滤波器消除正弦干扰的一个方案。该代码实现了以下功能:
1) 借助MATLAB画出了滤波器的误差性能曲面和误差性能曲面的等值曲线;
2) 给出了最陡下降法以及LMS算法的计算公式;
3) 用MATLAB产生了方差为0.05, 均值为0白噪音S(n),并画出某次采样得到的波形;
4) 根据 2)中的公式,并利用 3)中产生的S(n),在 1)中的误差性能曲面的等值曲线上叠加画出了采用最陡下降法以及LMS法时H(n)的在叠代过程中的轨迹曲线;
5)用MATLAB计算并画出了LMS法时误差随时间n的变化曲线(对应S(n)的某一次的一次实现)和e(n)波形;
6)在 1)中的误差性能曲面的等值曲线上,叠加画出采用LMS法得到的100次实验中的H(n)的平均值的轨迹曲线;
7)最终对结果进行了分析,具体见压缩包的word文档。
(Wideband signal in the conventional sinusoidal interference suppression method is the use notch filter (notch filter), this requires precise knowledge of the frequency of a sinusoidal interference . However, when the interference frequency sinusoidal changes slowly , and the selected frequency characteristic requirements are very sharp , then best use of adaptive noise cancellation method . following figure is a second-order FIR LMS adaptive filter to eliminate a program sinusoidal interference . The code implements the following functions:
A ) draw with MATLAB error performance of the filter surface and the surface contour error performance curve
2 ) gives the steepest descent method and the LMS algorithm formula
3 ) generated using MATLAB variance of 0.05 with a mean of 0 white noise S (n), and draw a particular sampling waveform
4 ) based on 2 ) of the formula , and use 3 ) generated in S (n), in a ) the error performance curves superimposed on the surface contour pl)
- 2013-11-06 13:12:36下载
- 积分:1
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SingleNeuronPIDController
基于MATLAB的单神经元PID控制参数自调整与仿真(MATLAB-based single neuron self-regulating PID control parameters)
- 2010-06-22 16:48:29下载
- 积分:1
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pso
说明: 带有测试函数的PSO算法源代码,用matlab开发(Test function with the source code of the PSO algorithm, developed using matlab)
- 2008-11-25 17:57:29下载
- 积分:1
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an-Encyclopedia-of-Matlab-algorithms
matlab算法大全(配备各种数学建模常用算法的matlab程序,适合MCM等各项数学建模比赛)(matlab matlab algorithm Daquan (with a variety of mathematical modeling algorithm commonly used procedures for MCM and the Mathematical Contest in Modeling))
- 2013-02-02 18:13:00下载
- 积分:1
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Optical-simulation-of-matlab-source
《高等光学仿真》matlab源程序 是该书的源程序代码,希望对你有用(Optical simulation of matlab source
)
- 2011-12-23 18:58:24下载
- 积分:1
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DeepLearnToolBox
DBN的实现(DeepLeranToolBox)举例(an example for DeepLeranToolBox)
- 2017-11-24 22:53:18下载
- 积分:1
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sawavee
应用matlab语言编写的应用于地震资料数字处理中的地震子波提取方法,基于模拟退火的高阶累积量子波提取方法(Applications written in matlab digital processing of seismic data used in the seismic wavelet extraction method, based on simulated annealing method for high order quantum wavelet extraction)
- 2021-02-22 09:19:41下载
- 积分:1
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matlabdingweisuanfa1
说明: 基于matlab的定位算法!WSN定位算法matlab仿真!(Matlab-based positioning algorithm! WSN location algorithm matlab simulation!)
- 2010-04-19 17:01:07下载
- 积分:1
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spherical_harmonic
球谐函数的matlab程序,用于声场分析(spherical harmonic function)
- 2012-08-06 10:02:58下载
- 积分:1
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AlohaN
aloha.m matlab source code
- 2010-11-11 00:31:32下载
- 积分:1