Digital-Modulation-Techniques2

奇异值分解用于英文文本检索，画出频率矩阵第一奇异值向量和第二奇异值向量的分布图( a fast retrieval algorithm for English texts is proposed. First of all, the English texts are mapped into frequency matrixes of order 26 and the dimensions of texts representation space are reduced through Singular Value Decomposition. Second, it fuses the features of the first singular value component and the second one, and then gets the complex feature vectors which reflect not only the statistic frequency but also the sequential structure of letters. )

说明：  采用MATLAB编写的最新三维数据图形界面，运用GUI编程，输入函数名：volumization (data, n )即可。其中DATA的格式为：[n x m x p]；n表示显示方式： 1 - all, 2 - every second, 3 - every third。 (MATLAB prepared using the latest three-dimensional data graphical interface, the use of GUI programming, enter the function name: volumization (data, n) can be. DATA format in which: [nxmxp] n that display: 1- all, 2- every second, 3- every third.)

orthogonal frequency division multiplexing simulation using software matlab

模态参数的时域识别方法，即在时间域内识别试验结构模态参数。(Time-domain modal parameter identification method, that is, the structure in time domain modal parameter identification experiments.)

说明：  龙格库塔算法的两个MATLAB程序，供大家借鉴。(Runge-Kutta algorithm two MATLAB programs for everybody' s reference.)

小波包去噪小波包去噪小波包去噪小波包去噪(Wavelet packet denoising wavelet packet denoising wavelet packet denoising wavelet packet denoising)

计算一个句柄函数周期开拓后的Fourier级数展开系数（涉及到如何处理振荡函数积分的问题），并给出一个应用它的例子——光栅自成像movie演示。(Fourier integral (dealing with oscillatory integrand))

次程式碼主要是藉由Copula模型為CDO商品訂價.(This program use for CDO pricing.)

给出一个关于怎样实现滤波的matlab算法实例，让读者很容易的掌握滤波算法的书写。(It offres us a programmer that tells us how to write .)

普通PID控制及其扩展算法控制的MATALB仿真程序，内容包含面广．(ordinary PID control algorithm and its expansion of enriching control simulation program, which includes many sectors.)