system

维纳滤波程序，给正弦波信号加入信噪比为20dB的高斯白噪声。(Wiener filtering process, to add a signal to the sine wave signal to noise ratio of 20dB Gauss white noise.)

In recent years, stepping with the popularization of smart phone and the development of mobile communication infrastructure, the conditions for ubiquitous computing society become more and more complete. In the vision of ubiquitous computing society, LBS (Location Based Service) that provides an added value to an unprecedented user experience has been paid a great deal of attention by mobile operators all over the world. As the core technology for LBS, various positioning systems have been studied extensively. For the outdoor environment GPS is mature and common. However, the performance of GPS in indoor environment is bad. Moreover, currently there is no technique whose accuracy and cost are appropriate for deployment in huge areas.

这里是一部分关于OFDM的教程和仿真，不知有没有用，反正好东西与大家共享。(OFDM on the part of the curriculum and simulation, but not a useless, since good things and share.)

this is the file to develop for

电力系统状态估计的程序，可以进行简单的14机模型的计算(Power system state estimation procedures, a simple model for the calculation of the 14 machines)

压缩感知的一种重构算法，此方法比OMP算法性能更好(Compression perception of a reconstruction algorithm, this method is better than the OMP algorithm performance)

单相全桥PWM整流模型，多次验证表明，该模型动态响应快，静态误差小，完全符合要求。(The single-phase full bridge PWM rectifier model, verified the model many times, fast dynamic response, static error is small, fully meet the requirements.)

说明：  用S变换对电压暂降进行检测，得到基频幅值，相位跳变，突变点，谐波检测，频率幅值包络线等特征量(The S-transform is used to detect the voltage sag, and the characteristic parameters such as fundamental frequency amplitude, phase jump, mutation point, harmonic detection, frequency amplitude envelope are obtained)

这是关于卷积编码的程序，希望对大家有所帮助．(This is on the coding process, we hope to help.)

projection and backprojection