ofdm_psd_spectrum

收发传真，浏览传真的程序(A program which receive、send and scan fax)

This document describes about the digital modulation techniques especially about spread spectrum.

wcdma 编码扩频调制过程。。。。。。。。。。。。。。。。。。(wcdma coded spread-spectrum modulation process )

本程序实现了用位图作为全平的主窗口,是全平显示的又一种实现方法,(This program realizes using bitmap as the main window of full flat, which is another realization method of full flat display.)

通过两个例子，将Optisystem和matlab这两个软件结合进行光学仿真，两个例子分别为光波频率右移和光波幅度调制。通过这两个例子，能很好的理解这两个软件的协同仿真。上传的文件包括文献和源码，还有optisystem的osd文件，文件很全。(Two examples are used to combine the two software Optisystem and MATLAB for optical simulation. The two examples are the right shift of the light frequency and the modulation of the amplitude of the light wave. Through these two examples, we can well understand the collaborative simulation of these two software. Upload files, including documents and source code, as well as the optisystem OSD file, the document is very complete)

说明：  Security in Mobile Ad Hoc Networks

说明：  ns2.33这是目前比较新的ns2版本，欢迎下载(ns2.33 This is relatively new ns2 version, welcome to download)

采用带通滤波法，对信号进行1/3倍频程分析。程序带详细注释。(no english)

FreeSender 群发器，学习socket 编程(FreeSender mass learning socket programming)

说明：  STM32F4 SPI 4线驱动RA8875 彩屏方案(stm32f4 driver ra8875 TFT lcd display)