main_test1

基于AWGN信道的OFDM仿真程序，欢迎下载参考相互学习！(Based on the AWGN channel OFDM simulation program are welcome to download a reference to learn from each other!)

采样定理的验证，即采样信号的频率大于等于原信号频率的两倍时才能准确的恢复原信号(Verification sampling theorem, the sampling frequency of the signal frequency is greater than or equal to twice the original signal in order to accurately restore the original signal)

神经网络图像处理程序，可以实现入门级功能(Neural network image processing procedures, entry-level functions can be achieved)

time-invariant degradation models and stationary signals and noise, the classical Fourier domain Wiener filter, which can be implemented in O(N logN) time, gives the minimum mean-square-error estimate of the original undistorted signal. For time-varying degradations and nonstationary processes, however, the optimal linear estimate requires O(N2) time for implementation. We consider filtering in fractional Fourier domains, which enables significant reduction of the error compared with ordinary Fourier domain filtering for certain types of degradation and noise (especially of chirped nature), while requiring only O(N logN) implementation time. Thus, improved performance is achieved at no additional cost. Expressions for the optimal filter functions in fractional domains are derived, and several illustrative examples are given in which significant reduction of the error (by a factor of 50) is obtained.

This Matlab function implements the SIFT algorithm for pitch extraction function [p] = sift (x, samp_rate) where p is a vector which holds the pitch frequency values in Hz at every 10 msec.

这是一个进行卫星轨道预报的程序。导航卫星；自主轨道预报；状态转移矩阵。无错误(This is a satellite orbit prediction program. Navigation Satellite autonomous orbit prediction state transition matrix. No error)

Line Detectio Line Detectio Line Detectio

matlab的语音文件的格式，如果缺少了的话可以就此下载(languang wenjian)

encoder convolutional

说明：  对海浪数据处理得到海浪谱。可以模拟不同风速产生的海浪谱，并得到一维海面分布。(Propose the wave hight data and spectrum analysis.Wave spectrum generated by different wind speeds can be simulated and one-dimensional sea surface distribution can be obtained.)