QGA_fxy

说明：  三相可带不对称负载的变频器，12个IGBT，精度高，THD<1 (Three-phase inverter can be loaded with asymmetric, 12 IGBT, high accuracy, THD &lt 1 )

High Resolution Pulse Width Modulation_ Green Engineers Group

communication demodulation modulation qpsk matlab simulink code

这是一篇关于软件估算技术的概述，挺全面的。(This is an article on software estimation techniques outlined, quite comprehensive.)

三维ising模型适合没有结构文件需要自己根据实际机构编写(ising model)

信噪比估计 使用数值积分的方法计算 离散采样信号(SNR estimation using the method of numerical integration of computing discrete sampling signal)

数学实验，用matlab详尽的描述了matlab的基础知识，方便初学者学习(Mathematical experiment)

通过MATLAB程序，进行语音信号处理里面的基于MMSE的谱减法增强处理程序，程序消除噪声的效果是现有算法的3dB，特别的对于 qiiZDo格式和 NbGjUXi 格式的语音处理效果很好。(By MATLAB program for speech signal processing inside the MMSE-based spectral subtraction enhancement program, the program to eliminate the effect of noise existing algorithms 3dB, special effects for speech processing qiiZDo format and NbGjUXi format well.)

Application of spread spectrum for satellite land mobile systems is difficult in satellite link because of synchronization and providing code or considerable Doppler shift. This is particularly high for LEO satellites. So that, a Doppler shift carrying a frequency in band S can reach to several tens of kHz. To estimate and compensate Doppler, a CW pilot carrier is used. The aim of this study is simulate Doppler frequency estimation using MIMO-OFDM technique. Finally, the proposed algorithm is compared to MMSE algorithm in order to insure its performance.

特征值分析，便于模态分析电网稳定态态势分析和薄弱环节识别(Eigenvalue analysis, to facilitate modal analysis grid steady state trend analysis and identification of weak links)