MATLAB code for OFDM based system using QPSK

自相关程序，本程序用来求序列的自相关运算，效果不错(since the associated procedures, the procedures used for the sequence-related operations since good results)

一种由运放构成的恒流源电路，文章中详细介绍了运放的构成及计算(analysis of voltage controlled constant dc current source on OP)

为了满足数字通信及其它商业应用的需求，语音压缩编码技术得到了迅速发展。介绍了目前语音压缩编码技术 的研究进展，主要包括连续可变斜率增量调制(CVSD)、小波分析、多脉冲激励线性预测编码、散布脉冲码激励线性预 测(DP-CELP)、多重脉冲散布非均匀代数码本激励线性预测(MPD-USACELP)、波形内插(Ⅷ)、线谱对(频率)(LSP)的量化(In order to satisfy deman凼of the digital communication and other commercial applicatiOils， the speech compression technology has been developed rapidly．The present research progress in speech compression technology is introduced in this paper including CVSD， wavelet analysis and its application to speech coding，MPLPC，DP-CELP，MPD-USACELP，Ⅷand quantification of LSF．These algorithins)

人脸识别2DPCA代码，MATLAB写的。(code written in MATLAB.)

数字信号处理，现行卷积的matlab代码，和函数文件。(Digital signal processing, the current convolution matlab code, and function files.)

Matlab code for PCA and MDA - Pattern Recognition

apple diseas identification apple leaf

说明：  zc序列根序列生成 循环移位和相关检测(zc sequence generate)

产生随机共振现象的输入输出信噪比曲线,运用龙格库塔算法求解朗之万方程，进而实现随机共振系统(the realization of stochastic resonance systems)

作者:邓华 人民邮电出版社 本书着重介绍了MATLAB在通信仿真，尤其是移动通信仿真中的应用，通过丰富具体的实例来加深读者对通信系统仿真的理解和掌握。 全书共分10章，前3章介绍MATLAB通信仿真的基础，包括Simulink和S-函数；第4~8章分别介绍了信源和信宿、信道传输、信源编码、信道编码、信号交织以及信号调制的仿真模块及其仿真实现过程；第9章介绍了在通信系统的仿真和调试过程中经常遇到的问题及其解决办法；最后，第10章以cdma 2000为例介绍了移动通信系统的设计和仿真。(Author: Deng Posts & Telecom Press This book highlights the MATLAB simulation in communication, especially mobile communications simulation, through a rich and specific examples to deepen the reader' s understanding of communication system simulation and control. The book is divided into 10 chapters, the first 3 chapter describes the MATLAB simulation-based communications, including Simulink, and S-functions No. 4 Chapter 8 introduced the letter of the source and places the letter, channel transmission, source coding, channel coding, signal interleaving, and signal Modulation of the Simulation Module and Simulation of the implementation process Chapter 9 describes the communications system simulation and debugging process frequently encountered problems and their solutions Finally, Chapter 10, for example, introduced in order to cdma 2000 mobile communication system design and simulation.)