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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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ImgCom
用MATLAB编写的基于多尺度小波分析的图像压缩程序。(Prepared using MATLAB image compression based on multi-scale wavelet analysis.)
- 2013-04-27 20:56:35下载
- 积分：1
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pmsm
matlab搭建的永磁同步发电机模型，能够运行，matlab数据模型，永磁直驱同步发电机模型(permanent magnet synchronous generator model matlab built, able to run, matlab data models, direct drive permanent magnet synchronous generator model)
- 2021-03-31 15:59:09下载
- 积分：1
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t_y
Test TOR Boundary Condition Test
- 2012-04-24 20:31:32下载
- 积分：1
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duiou
对偶单纯形法matlab编程，有逐句的说明(simplex write)
- 2012-05-15 16:01:16下载
- 积分：1
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NR_Pmethod
极坐标系下电力系统潮流计算Matlab版源程序(Matlab version of the source of power flow calculation in polar coordinates)
- 2012-06-07 22:04:54下载
- 积分：1
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Locally_weighted
斯坦福大学公开课第三课中涉及的局部加权线性回归，用matlab实现了在不同带宽下的对比(Stanford open class third lesson involved locally weighted linear regression, using matlab to achieve a comparison of different bandwidths)
- 2013-09-03 09:03:57下载
- 积分：1
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conv
covolution is a technique used to sample two signals producing the third signal.there are two types of convolution namely linear and circular convolution.
- 2015-01-08 13:48:01下载
- 积分：1
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poisson
poisson generator matlab
- 2009-10-23 00:13:45下载
- 积分：1
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Cooperative_MIMO_AFDF
Cooperative MIMO matlab file to simulate Cooperative MIMO relaying system
- 2010-10-11 13:55:00下载
- 积分：1
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