matlab-in-mathematical-equations

OFDM系统，子载波数目1024，前缀数目256，循环数目256，加入了高斯白噪声(OFDM system, the number of subcarriers 1024, the number prefix 256, the cycle number of 256, by adding a Gaussian white noise)

本算法程序基于实测汽轮机振动信号进行了测试及性能分析。理论分析及仿真结果表明，AR模型谱估计算法在阶次合适的情况下，能够取得较好的方差及分辨力性能，适合于振动信号的功率谱估计，且AIC准则为确定合理的模型阶次提供了有效依据。(This algorithm based on the measured turbine vibration signal testing and performance analysis. Theoretical analysis and simulation results show that, AR model spectrum estimation algorithm in appropriate circumstances the order, the variance can achieve better performance and resolution, suitable for vibration signal power spectrum estimation, and the AIC criterion to determine a reasonable model order provides an effective basis.)

this code extract instantaneous frequency of signal

电力系统无功优化算法，matlab程序代码，调试通过。(Reactive power optimization algorithm code, debugging through)

几种16qam的实现方法，对于初学者可能有帮助，(16qam the realization of several methods may be helpful for beginners,)

P3.18. An analog signal xa(t) = sin (100πt) is sampled using the following sampling intervals. In each case plot the spectrum of the resulting discrete-time signal. Ts= 0.1 ms, Ts= 1 ms, Ts = 0.01 Sec

tfrstft和tfrgabor不同窗函数，不同窗长度的时频性能分析。(tfrstft and tfrgabor different window function different window length, time-frequency analysis of performance. Note: The required frequency toolbox)

this is matlab small programming for compare the graphic with color

最近交互式电源技术，软交换、同步整流、频率固定(Alternating expressions Power technology recently、Softswitch, synchronous rectification, fixed frequency)

主要介绍了正交振幅调制的相关知识，包括如何识别(Mainly introduced the quadrature amplitude modulation related knowledge, including how to identify)