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digital wartermarking 2D image from matlab source

The document contains many sources for computing FIR and IIR, also there are many pictures of the results.

Modulation test for OFDM : This is a set of five (5) codes about COFDM (Coded Orthogonal Frequency Division Multiplexing) and coding schemes such as Convolutional, BCH, Reed Solomon (RS) and Low Density Parity Check (LDPC). The study uses an OFDM signal over an AWGN Channel with white Gaussian noise model, and calculate the Bit Error Rate wich is plotted.

小波谱分析mallat算法经典程序，实现小波谱分析(mallat)

说明：  这个SVPWM应该是好的。传一个共享哈！呵呵！(This should be good SVPWM. Chuan-a shared Ha! Ha ha!)

在matlab7.8版本上编译通过。 利用matlab的滤波器工具箱函数实现对直扩扩频通信过程的仿真模型，可以简单设定功率控制，多径传输，多值干扰等过程。(This program is compiled successfully in Matlab7.8 platform. With the matlab Filter Toolbox funtion to simulate the process of spread spectrum transmission. The simple option such as power control,multiprocess and multiaddress nterference can be set in this program。)

matlab code for the tuning filter in analog communications.

这个程序主要是实现ofdm系统的发射和接收的过程。(This procedure is mainly implementation OFDM system transmitting and receiving process.)

这是一个基于模糊综合评判的算法。面对现实世界的模糊和不确定性，我们运用模糊数学中的思想来实现给事物做评判(It is used to comment some fuzzy things. )

基于MATLAB的电力系统潮流计算的程序，比较完整，适合入门新手学习。(MATLAB-based power system load flow calculation program , complete and suitable for beginners novice learning .)