release

this program estimate cumulant order (6,0) for mqam modulation and plot them

是最基本的ldpc matlab程序，简单易学，可以经过改编成为ldpc基础(Is the most basic ldpc matlab program)

正交频分复用(OFDM)技术及其MATLAB模拟(orthogonal frequency division multiplexing (OFDM) technology and its MATLAB simulation)

薛定宇教授 ctrllab工具箱3.0；PID参数仿真用。 使用方法：1）解压，并在matlab下导入路径；2）在命令窗口执行ctrllab即可。 (Professor Xue Dingyu ctrllab Toolbox 3.0 PID parameters in simulation. Usage: 1) extract and import under the matlab path 2) In the command window to execute ctrllab.)

这是一个相对完整的OFDM通信系统的仿真设计，包括编码，调制，IFFT， 上下变频，高斯信道建模，FFT，PAPR抑制，各种同步，解调和解码等模 块，并统括系统性能的仿真验证了系统设计的可靠性 ( This is a relatively complete simulation of OFDM communication system design, including coding, modulation, IFFT, upper and lower frequency, Gaussian channel model, FFT, PAPR suppression, various synchronization, demodulation and decoding module block, and system including the simulation of system performance reliability of system design)

说明：  包含两个灰色预测模型的MATLAB代码实现。1.灰色预测GM（1，1）模型。2.改变初始条件，以1-AGO序列的最后一个数据为初始条件的灰色预测模型。(Contains two gray prediction model matlab code. 1. Grey Prediction GM (1,1) model. 2. Change the initial condition, take the last data of 1-AGO series as the initial condition of grey prediction model.)

Conformal mapping of (x, y) contour to a rectangle.

类星体光变分析，在matlab环境下W-M函数模拟光变，内含大量BL Lac原始观测数据！(light curve of BL Lac object)

用MATLAB来仿真FSK、PSK、DPSK的调制、解调过程，并通过实验来比较它们的误码率和信噪比的关系。内附有matlab源代码(Using MATLAB to simulate FSK, PSK, DPSK modulation, the demodulation process, and to compare their bit error rate and signal to noise ratio by the empirical relationship. Enclosed is the matlab source code)

从入门要精通PID控制,主要针对的初学PI(From entry to master PID control, mainly for the beginner PI)