ljxd

码分多址(CDMA)技术作为第三代移动通信系统的核心技术，具有容量大、抗干扰能力强等优点。然而,传统的CDMA系统属于窄带扩频系统,它的数据速率比较低,不能胜任新一代移动通信系统 （beyond 3G）高速数据通信的需要。而多载波传输技术－正交频分复用（OFDM），作为后三代移动通信的核心技术，则具有高数据速率传输的特点。(Code Division Multiple Access (CDMA) technology as the third generation mobile communication system' s core technology, high capacity, anti-interference ability and so on. However, the traditional narrow-band CDMA system is spread spectrum system, and its relatively low data rate, can not do next-generation mobile communication systems (beyond 3G) high speed data communication needs. The multi-carrier transmission technology- orthogonal frequency division multiplexing (OFDM), after three generations of mobile communications as a core technology, the high data rate transmission characteristics.)

说明：  图象边缘检测及定位,开发环境是MATLAB，可直接编译使用。(Image edge detection and localization, and development environment is MATLAB, can be directly compiled with.)

This is a filter design document in digital and analog domain. There is matlab code

routine to take the Fourier transform of a signal and plot both the time and frequency domain representations

源码程序,用MATLAB.m文件实现QPSK信号的调制与解调(Source program to achieve MATLAB.m document QPSK signal modulation and demodulation)

说明：  列文伯格—马奎特算法的matlab实现程序(The Matlab program of the Levenberg-Marquardt algorithm)

sepia filter on image sepia.m

ica, face recognition

emd源程序。emd源程序。emd源程序。emd源程序。emd源程序。(display the emd functions)

本书系统全面的介绍了现代信号处理的主要理论，具有代表性的方法和一些典型应用(The book is systematic and comprehensive introduction to the modern signal processing theory, representative methods and some typical applications)