BPSK_modelation

these are the Mtlab functions to plot the figures in the book Communication system (by Haykin)

一个对几幅图象进行盲信号分离的MATLAB程序。 分离性能还不错。(The pieces of an image for Blind Signal Separation of the MATLAB program. Separation performance is not bad.)

当信噪比较大时，采用广义最小二乘法可能会出现多个局部收敛点，解决这个问题的方法可用多级最小二乘法，一般来说多级最小二乘法包含三级辨识过程。利用输入输出数据，通过多级最小二乘法，可分别求的辅助模型，过程模型和噪声模型的参数估计值。在高噪声的情况下，多级最小二乘法明显优于广义最小二乘法，其收敛点唯一。(When the signal noise ratio (SNR), and by use of the generalized least squares method may appear more local convergence point, the way of solving this problem can be used multistage least squares method, and generally multistage least squares method includes three identification process. Using input/output data, through the multistage least squares, respectively for the auxiliary model, process model and noise model parameter estimation. In the high noise, multistage least squares method is obviously superior to the generalized least squares method, and its convergence point only.)

一个自己用到的用matlab编写的fdtd源程序，感觉还可以。里面的参数没有设置，可以自己根据需要设置。(Used with its own written fdtd matlab source, feeling okay. Inside the parameter is not set up my own according to their needs.)

To calculate the coupling partitial difference equation of heat transition and diffusion.

用于非线性信号处理数学处理常用算法的工具箱，很好的能分解非线性信号，可以用于常用的故障诊断技术中去 很好的能解决实际中的问题(nonlinear signal processing)

直接扩频序列的频谱分析，从DSSS信号的产生到接收，不错的直接扩频序列分析函数，以测试通过，有图产生(Spectrum analysis of direct sequence spread spectrum, from DSSS signal to produce received a good direct sequence spread spectrum analysis function to test, there are plans to produce)

data from x per x matrices that i found, i do not know what is this about.

二维光场分析（球面波）。编程实现单色球面波在给定二维平面上的构建，并用相位表达式直接计算其相位，与通过复光场得到的相位相比较，观察相位包裹（缠绕）现象。与平行光相干涉，观察干涉光强分布。(2 d light field analysis (spherical wave).Programming monochromatic spherical wave in a given the construction of a 2 d plane, and the phase expression directly calculate the phase, compared with the phase is obtained by complex light field, observation phase package (coil).Observe with parallel light interference, the interference light intensity distribution.)

说明：  此文件包含了zoom-fft算法语言，结果与FFT对比图片输出(This file contains ZOOM-FFT algorithm language, the results are compared with FFT image output.)