modulation-classify

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现代通信系统matlab第五章基带数字传输源代码(Modern communications systems Chapter matlab source code baseband digital transmission)

1. 按照式计算相似性矩阵 2. 排除自身的相似度 3. 按照式计算归一化矩阵 4. 按照式计算归一化拉普拉斯图矩阵L 5. 计算L的特征向量，将前个特征值最大的向量按列放置成一个矩阵，即依次为前个特征值最大的特征向量 6. 归一化X形成矩阵Y 7. 对矩阵Y按每行为一个数据点，进行k-means聚类，第行所属的类就是原来所属的类。(1. similarity matrix based on formula computation 2. rule out your own similarity. 3. normalized matrix based on formula computation 4. normalized formula Laplasse matrix L according to formula. 5. Calculate the eigenvectors of L. Place the vectors with the largest eigenvalues in columns into a matrix, that is, the eigenvectors with the largest eigenvalues in turn. 6. normalized X formation matrix Y 7. K-means clustering is applied to matrix Y according to one data point per behavior. The first row belongs to the original class.)

说明：  美国六级谱转换为时域样本的逆傅立叶变换法MATLAB程序(MATLAB Program of Inverse Fourier Transform Method for Converting Six-Level Spectrum to Time-Domain Sample)

短时傅立叶变换测频，可对复信号处理。界面设计好，用户交互方式编程。(STFT frequency measurement can be complex signal processing. Interface design, the user interactively programming.)

说明：  利用FFT快速运算技术来实现在二维图像领域上的稀疏分解过程。(The use of FFT techniques to achieve fast computing in the field of two-dimensional image of the sparse decomposition process.)

说明：  上传RBF源程序，希望能对大家学习有所帮助，并请提出宝贵的意见和建议！(upload source, in hopes of learning we can help, and requested the valuable advice and suggestions!)

用MATLAB仿真现代谱估计中的周期图算法(Simulation with MATLAB in the periodogram spectral estimation algorithm)

这是我们通信建模与仿真书上的程序，是白噪声＆瑞利信道下对OFDM的仿真实现。(This is our communication on Modeling and Simulation on the procedures, White Noise & Rayleigh Channel on OFDM Simulation.)

一个关于PCA降维的小例子，用matlab编写(PCA matlab)