project

均匀光栅matlab仿真程序，方便学习光栅特性(Uniform grating simulation program)

modulation channel capacity

matcont is a Matlab continuation package with a GUI for the in- teractive numerical study of parameterized nonlinear ODEs. It allows to compute curves of equilibria, limit points, Hopf points, branch points of equilibria, limit cycles, fold, flip, torus and branch point bifurcation points of limit cycles, and homoclinic orbits. matcont can start these computations from equilibria or periodic orbits computed by time inte- gration and it can monitor user-defined functions and locate their roots along computed curves. matcont can compute all necessary derivatives by finite differences, from file or by using the symbolic toolbox of Mat- lab. In this tutorial we describe a numerical study of a chemical model of Steinmetz and Larter where a user function is monitored, a stable periodic orbit is started from time integration and bifurcations of periodic orbits are detected and continued.

说明：  完整的锁相环matlab代码实现，其中包括高斯噪声干扰，频差，相差，给出最后频率及相位收敛结果图。重要的是代码中有本人详细注释，易于理解(Complete phase-locked loop matlab code, including the Gaussian noise interference, frequency difference, a difference, given the final results of the frequency and phase diagram convergence. Important that the code in detail in my notes, easy to understand)

添加到matlab的toolbox中，用来解决整数线性规划的yalmip工具箱，2014年6月最新版(Add to the toolbox in matlab for solving integer linear programming yalmip toolbox, in June 2014 the latest version)

choudhury教授的关于阀门粘滞模型的Matlab/Simulink 模型，绝对真实，本人亲自运行成功。(A valve stiction model of professor Choudhury. )

預失真是一種用於改善無線電發射機放大器線性度的技術。大多數電信系統中的無線電發射機放大器需要是“線性的”，因為它們必須準確地再現其輸入端存在的信號。 壓縮其輸入或具有非線性輸入/輸出關係的放大器導致輸出信號濺到相鄰的射頻上。 這會對其他無線電信道造成乾擾。(Predistortion is a technique used to improve the linearity of radio transmitter amplifiers. Radio transmitter amplifiers in most telecommunications systems are required to be "linear", in that they must accurately reproduce the signal present at their input. An amplifier that compresses its input or has a non-linear input/output relationship causes the output signal to splatter onto adjacent radio frequencies. This causes interference on other radio channels.)

thresholding technigues on different filters

matlab mo ni tui huo suan fa

因为傅立叶变换对应的是无限信号,信号经过分帧后变成有限信号,分帧的信号再进行傅立叶变换后,高频部分将有 泄露 ,所以要加窗. 窗函数的拼谱都是在某高频部分截止,所以每帧信号加窗后的傅立叶变化,频谱基本 泄露 (Because Fourier transform corresponding is infinite signals, signals after framing become limited, framing signal again after Fourier transform, the high frequency part will have leaked , so to add window. Window function spell spectrum are in a high frequency part of the globe, so each frame and window after Fourier transform, signal spectrum basic leak )