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16QAM
采用16QAM调制方式对一串二进制信息进行基带调制,并分析其功率谱,在AWGN信道上进行传输,并解调,最后对其误比特(BER)性能加以分析。(Using 16QAM modulation methods on a string of binary information in the baseband modulation, and analyze the power spectrum, in the AWGN channel for transmission, and demodulation, the last of its bit error (BER) performance analysis.)
- 2009-12-29 17:55:54下载
- 积分:1
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Cepstrumimprove
关于基音周期的提取,倒谱法的改进,利用预测余量(On the pitch period extraction, improved cepstrum method, the use of margin forecast)
- 2011-09-22 10:11:47下载
- 积分:1
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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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2Tx-2Rx-STBC-MIMO
MIMO信道估计,包括高斯噪声下的分析,对于初学者(ls,lmmse of mimo ofdm channel)
- 2013-11-13 22:40:43下载
- 积分:1
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小程序
说明: 留一法交叉验证程序以及神经网络拟合函数的对比(Leave one method for cross-validation)
- 2019-07-09 14:42:21下载
- 积分:1
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kalman-wiener
现代信号处理中常用的处理信号的滤波器,卡尔曼和维纳滤波器(Modern signal processing that are commonly used in signal processing, Kalman filters and Wiener filter )
- 2010-05-20 22:03:07下载
- 积分:1
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0272008001
Ultra-Wideband Antennas
Guest Editors: James Becker, Dejan Filipovic, Hans Schantz, and Seong-Youp Suh
- 2011-02-15 12:56:59下载
- 积分:1
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Anisotropic-diffusion
Anisotropic diffusion in image processing.
- 2013-11-16 10:05:40下载
- 积分:1
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PCD
PCD 压缩传感使用并行坐标下降算法(冗余字典由各种小波变换和离散余弦变换被用于图像修复(PCD compressed sensing using parallel coordinates down algorithm (redundant dictionary by all sorts of wavelet transform and discrete cosine transform is used for image restoration
)
- 2014-03-24 16:59:41下载
- 积分:1
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dmc_sim
说明: 使用动态矩阵预测控制模型对蒸发换热器进行控制(DMC heatexchanger)
- 2011-03-14 10:16:08下载
- 积分:1