Microsoft-Office-Worddhdhhhdhhhhdhd

Digital communication QAM64 modulation type

Starting and speep control of DC machins with dc to dc rectifire (PWM)

matlab 入门基础知识，数字图像处理系列入门教材系列之一(Basic knowledge of introduction to matlab, digital image processing one of series of introductory textbook series)

用于求个多个信号源波达方向的旋转不变子空间算法(rotation invariant subspace for seeking the direction of arrival of multiple sources )

说明：  粒子滤波、无迹粒子滤波算法程序，高斯混合模型参数设置等详细代码(Particle filter, unscented particle filter program, Gaussian mixture model parameter settings, and more code)

经典的移动渐进优化算法matlat源代码，非常实用。(The classic mobile gradual optimization algorithm matlat source code, very useful.)

this file give another type of generation of quadrature amplitude modulation

描述了异步通信和同步通信的的概念还有对两者的区别做出了详细的讲解(Describe the concept of asynchronous communication and synchronous communication and make the detailed explanation to the difference between the two)

介绍了数字通信中的QPSK调制解调的原理，通过用Matlab编写脚本程序对QPSK通信系统的发射和接收过程的具体实现进行模拟仿真，绘出信号在理想信道和加噪信道中模拟传输时的时域图，并对各模块进行了频谱分析，所得到的结果与 理论基本相符，对于理解QPSK系统的性能并在系统的实际应用上作进一步的设计，提供了有效的参考依据。 (The introduction was done with the principle of the QPSK modulation and demodulation in digital communications，a script was written by using Matlab program to CalTy out a simulation of the QPSK communication system．which contains the concrete realization of transmit and receive process．The time-domain diagram is drew separately when the signal transmits in the ideal channel and in the channel with noise，spectral analysis of each module is also done，the results obtained with theoretical results in the main，which provides an effective frame of reference for understanding the performance of QPSK systems，and the practical application in the system to make further designed．)

一个包含常用特征提取方法的matlab工具包。内含 PCA, CCA, mnf, pls 、 KPCA, KCCA, kmnf, kpls 等算法的实现源码(a matlab toolkit Containing some common feature extraction methods . Containing PCA, CCA, mnf, pls, KPCA, KCCA, kmnf, kpls algorithm implementation source)