fftshow

factor of 32, with acceptable quality.What are the principles behind compression?A common characteristic of most images is that the neighboring pixels are correlated and therefore contain redundant information. The foremost task then is to find less correlated representation of the image. Two fundamental components of compression are redundancy and irrelevancy reduction. Redundancy

这个是用MATLAB中的SIMULINK做成的PCM编码器,使用MATLAB实现PCM编码和解码.(This is in SIMULINK with MATLAB made PCM encoder, the use of MATLAB realize PCM encoding and decoding.)

Communication Systems Lab 6

OFDM System, including pilot, GI, Guard band, rayleigh channel, AWGN, equalization, channel estimation.

本代码是《通信信号处理》课程的大作业相应的代码。主要是通信信号发射端的仿真，具体功能是：1. 产生任意长度的伪随机序列，将序列映射为I,Q两路的信号，2.均方根升余弦滤波器成型. 3.经过通带衰减为3dB的倾斜滤波器（模拟信道衰落效果）4.插零，半带滤波器升抽样。 5.NCO处理单元调制(This code is communication signal processing courses corresponding to the large code. Mainly is the simulation of the communication signal transmitter, the specific functions are: 1. Produce arbitrary length of the pseudo-random sequence, the sequence mapping for the I, Q two-way signal, 2. Raise the root-mean-square filter forming 3. After passband attenuation 3dB tilt filter (analog channel fading effect) 4. Insert zero, half-band filter l sampling. 5. NCO processing unit modulation)

一个详尽的算术编码的matlab仿真程序。(A detailed arithmetic coding matlab simulation program.)

数学建模与数学实验（第3版），各种常用的算法，ppt，M文件，各算法后附有matlab程序，可以方便的运行。(Mathematical modeling and mathematical experiment (3), a variety of commonly used algorithms, ppt, M file attached to each algorithm matlab program, easy to run.)

说明：  小波包去噪小波包去噪小波包去噪小波包去噪(Wavelet packet denoising wavelet packet denoising wavelet packet denoising wavelet packet denoising)

风力发电控制器matlab仿真代码，大家一起参考学习。(Wind power controller matlab simulation code, with everyone learning.)

matlab code for pca