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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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(chp5)
4PAM和8PAM在AWGN信道下载波调制的性能分析(4PAM and 8PAM in AWGN channel wave modulation performance analysis download)
- 2014-02-20 19:56:21下载
- 积分:1
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conjgrad123
To solve Ax=b - input A, b, x0 (initial guess), ni (number of iteration) - output
- 2010-11-05 23:23:06下载
- 积分:1
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Blood-pressure-cuff-_BOM
电子血压计设计BOM
Blood pressure cuff specification_BOM.zip(Electronic sphygmomanometer design BOM Blood pressure cuff specification_BOM.zip)
- 2013-11-26 13:24:32下载
- 积分:1
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非负矩阵分解 nmfdb
本程序为非负矩阵分解,matlab程序。输入为要分解的矩阵和端元数,输出为分解的结果(this program is suitable for NMF .the input data is the matrix to be decomposed and the number of endmember.output is the result)
- 2014-04-02 10:56:00下载
- 积分:1
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kalman
目标跟踪是卡尔曼滤波的主要应用领域,通过本作业,进一步加深对卡尔曼滤波算法的理解,了解卡尔曼滤波器算法的基本特点,掌握卡尔曼滤波算法应用研究的基本步骤和方法。 (Kalman filter target tracking is the main application areas, through the operation, and further deepen the understanding of the Kalman filter algorithm to understand the basic characteristics of the Kalman filter algorithm, Kalman filter algorithm applied research to master the basic steps and methods.)
- 2010-05-11 20:46:40下载
- 积分:1
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chaper8
机器人控制系统的设计及其matlab仿真第8章“机器人自适应鲁棒控制”源代码(Robot control system design and its matlab simulation Chapter 8, " Robot Adaptive robust control" source code)
- 2013-04-25 14:25:30下载
- 积分:1
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PMSM_MRAS
基于无速度传感器建立的PMSM的模型自参考模型,效果还不错(The model of PMSM based on speed sensor is not bad)
- 2018-05-22 20:55:11下载
- 积分:1
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速度调节器
开关磁阻电动机仿真用的功能控制模块啊啊啊啊啊(shzaibuzhidaoshuodianshaa)
- 2019-04-24 12:58:01下载
- 积分:1
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temp_match_fn
the m-file is a function used for template matching in image processing. It is my first upload here. Hope useful
- 2011-07-28 07:09:11下载
- 积分:1