Introduction-to-digital-signal-processing-and-fil

本程序用于仿真QPSK的解调(procedures for the simulation of the QPSK demodulator)

MATLAB中提供了汉明码的编解码、4FSK调制解调函数和不同通信信道模型函数，本程序直接调用进行编程。借助于MATLAB可大大地拓宽研究分析的视野提高研究设计的效率,具有重要的推广和应用价值。 (MATLAB provides the hamming codec 4FSK modem function and different communication channel model function, the program calls directly programming. Help of MATLAB can greatly broaden the horizons of research and analysis to improve the efficiency of the study design, with promotion and application value.)

适用于雷达方面学习的初学者熟悉相关参数设置了解相关线性调频信号离散化，匹配滤波的产生方法等一系列基本问题。比较时域和频域不通滤波方法的区别(Beginners apply to radar aspects of learning to understand familiar with the parameters related to the chirp signal discrete, matched filtering to produce a series of basic questions like. Comparison of time domain and frequency domain filtering method fails difference)

This is implemented by Matlab and includes all mathematical functions of Quaternion.

In telecommunications, direct-sequence spread spectrum (DSSS) is a modulation technique. As with other spread spectrum technologies, the transmitted signal takes up more bandwidth than the information signal that modulates the carrier or broadcast frequency. The name spread spectrum comes from the fact that the carrier signals occur over the full bandwidth (spectrum) of a device s transmitting frequency.

zernike 7乘7模板的检测算法，模板可以自己添加，附加了一部分说明文字(zernike 7 x 7 template detection algorithm, the template can add their own, additional part of the description text)

MATLAB Code for Speed Control of three phase Induction motor using Variable Rotor Resistance

基于Weber公式的齿轮啮合刚度计算公式（MATLAB版）(calculation of gear mesh stiffness based on Weber)

Exponential distribution function by uniform distribution function

说明：  contourlet算法作为二阶小波算法的延续，有很强大的应用空间，上传的文件是contourlet算法的工具箱(Contourlet algorithm as a second-order wavelet algorithm for the continuation of a very powerful application space and upload the document is Contourlet algorithm toolbox)