FDK_projection_and_backprojection

JPEG 压缩源代码，适合初学者，具有一定的参考价值(JPEG compression source code, suitable for beginners)

ofdm系统的信道估计，有LS、MMSE、LMSE三种算法的比较 (ofdm systems, channel estimation, a LS, MMSE, LMSE Comparison of three algorithms)

分析了分别在瑞丽、莱斯、AWGN衰落信道、采用BPSK、QPSK、QAM调制方式情况下的EGC性能比较(The comparison of EGC performance under the conditions of Rayleigh, Rician, AWGN fading channels and using BPSK, QPSK and QAM modulation methods is analyzed.)

说明：  用神经网络实现故障诊断的matlab程序(Matlab program for fault diagnosis based on Neural Network)

此程序是关于小波变换用于故障信号分析和处理的程序，特别适合去噪和第一类间断点的检测，适合机械波研究者参考-this procedure is used on the wavelet transform fault signal analysis and processing procedures, particularly suitable for de-noising and continuity of the first category of detection, for the reference of researchers mechanical wave

数据模型归一化，模态振动，正确率可以达到98％，调试通过可以使用，模拟数据分析处理的过程，光纤陀螺输出误差的allan方差分析，包含收发两个客户端的链路级通信程序。

This an anneal in Matlab

基于fft和二进小波编写的二维小波多孔算法图像分解，效果不错(Fft and based on dyadic wavelet algorithm for the preparation of porous two-dimensional wavelet image decomposition, good results)

小波方法进行降噪，阈值函数来完成不同设计，核心程序如下面的所示，使用的小波基有coif5，db3，sym4，bior2.4，haar，rbio(Wavelet method for noise reduction, design to complete different threshold function, the core program as shown below, using the wavelet base coif5, db3, sym4, bior2.4, haar, rbio )

实现心电信号傅里叶变换处理、并显示原信号和处理后的信号(realized the FFT of ECG, and display the results)