Beam-Analysis-Matlab-Codes

matlab 7.x书上光盘所带的原代码,以及图象处理滤波的程序，非常有用，可以直接引用(matlab 7.x Book on CD-ROM brought the original code, as well as image processing, filtering procedures, is very useful, can be directly invoked)

CDMA系统的研究与MATLAB仿真 本科论文(CDMA System Simulation with MATLAB undergraduate thesis)

simulink matlab DTC msap dtc.mdl secteur.m table.m

周期图法计算在白噪声环境下的正弦信号功率谱密度(Periodogram method under the white noise power spectral density of the sinusoidal signal)

快速计算一维信号的塔式谱峭度图，选择谱峭度最大值区间，方便确定所需滤波器中心频率及带宽。(Computes the fast kurtogram of signal x.This fast algorithm uses a pyramidal decomposition of the signal into a user-specified number of levels (a good choice is nlevel = 8). The first level is the classical kurtosis of the signal, the second level is the spectral kurtosis in 2 octaves, the third level the spectral kurtosis in 4 half-octaves, etc. Non-integer levels refer to divisions into third octaves. Here below is an illustration on how the frequency band is successively split when increasing the level)

用于2维、3维的血管图像增强，根据的理论为Frangi提出的Vessel enhancement diffusion。(2D and 3D vessel enhancement filter acording to Vessel enhancement diffusion proposed by Frangi 2001)

寻找测试样本的最近邻，可以有效的用于用于模式识别，信号处理(This is a small but efficient tool to perform K-nearest neighbor search, which has wide Science and Engineering applications, such as pattern recognition, data mining and signal processing. The code was initially implemented through vectorization. After discussions with John D Errico, I realized that my algorithm will suffer numerical accurancy problem for data with large values. Then, after trying several approaches, I found simple loops with JIT acceleration is the most efficient solution. Now, the performance of the code is comparable with kd-tree even the latter is coded in a mex file. The code is very simple, hence is also suitable for beginner to learn knn search.)

This program is used for face recognition

调用函数来计算正，逆哈尔1-D DWT的主程序(Main program for calling functions to compute forward and inverse Haar 1-D DWT)

里面是小波分析的实现方法，还有数学介绍。数字信号处理上机实验答案(第三版).docx的电子版(There is a wavelet analysis method, as well as mathematical description. Digital signal processing on the experimental answer (third edition). Electronic version of docx)