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untitled
数字基带传输基带信号,指未经调制的信号。这些信号的特征是其频谱从零频或很低频率开始,占据较宽的频带。
基带信号在传输前,必须经过一些处理或者某些变换(如码型变换、波形和频谱变换)才能送入信道中传输。处理或变换的目的是使信号的特性与信道的传输特性相匹配。
数字基带信号是消息代码的波形表示。表示形式有多种,有单极性、双极性波形,归零和非归零波形,差分波形、多电平波形之分,各自有不同的特点。
研究数字基带信号通过加性高斯白噪声信道的传输,并且假设信道除了叠加高斯噪声外,不会对信号产生其他失真。(matlabSimulation(pulse amplitude modulation) modulation signal in AWGN (additive white Gaussian noise AWGN (Additive White Gaussian Noise)) under the channel bit error rate and bit error rate performance, and compared with the theoretical value.)
- 2018-05-08 18:47:36下载
- 积分:1
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DWT
音频数字水印技术,采用小波变换,psnr、snr、nc等参数计算(Audio watermarking, DWT translation,parameter caculation)
- 2012-03-23 11:18:13下载
- 积分:1
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FractionalCalculusandWavelettansforms
该文讲解了分数阶微积分和小波变换之间的关系,很不错的论文(The article explained the fractional calculus and the relationship between the wavelet transform, a very good paper)
- 2010-12-19 20:22:35下载
- 积分:1
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Matlab
说明: 对脉搏波进行t波,r波进行检测,提取,再将特征值标注到原波形上(Detect and extract the T wave and R wave of pulse wave)
- 2020-03-24 16:32:06下载
- 积分:1
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wnn
说明: 这是一个用小波神经网络进行非线性函数逼近的例子,拟合效果非常好,保证能运行!有详细注释!我是参考《青岛海洋大学学报》 2001年第1期 一种基于BP算法学习的小波神经网络编写的,大家可以针对原文更好的理解我的程序!(This is a wavelet neural network with nonlinear function approximation example of fitting results is very good, guaranteed to run! Detailed Notes! I refer to Journal of Ocean University of Qingdao,2001 ,“a learning algorithm based on BP wavelet neural network ”, you will understand me better for program!)
- 2010-03-18 22:13:54下载
- 积分:1
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synsq_toolbox_v1
同步压缩小波变换(synchrosqueezing wavelet transform)工具箱,用于信号处理时频分析(synchrosqueezing wavelet transform toolbox for time-frequency analysis in signal processing )
- 2012-04-23 15:51:10下载
- 积分:1
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Bayesian_Wavelet_Network
EEG signal classification using wavelet feature extraction
- 2011-02-02 01:27:18下载
- 积分:1
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20070313195904788
近10种matlab基于小波变换的图像处理程序!
(M文件)(nearly 10 species of Matlab based on wavelet transform image processing procedures. (M))
- 2007-06-02 09:49:33下载
- 积分:1
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wavelet4
小波分析程序,用于小波包分析,小波树的建立,剪切,分解等等(Wavelet analysis procedures for the wavelet packet analysis, wavelet tree establishment, cut, break, etc.)
- 2010-11-15 20:58:57下载
- 积分:1
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Multi_Wavelet
说明: 多小波代码,有CL,GHM,Sa4,Opt-rec四种多小波的变换与反变化,前处理和后处理的代码。(Multiwavelet code, there are CL, GHM, Sa4, Opt-rec four Multiwavelet Transform and anti-change, pre-treatment and post-processing code.)
- 2021-04-28 11:38:44下载
- 积分:1