doa_example

—The minimum variance distortionless response (MVDR) approach is very popular in array processing. It is also employed in spectral estimation where the Fourier matrix is used in the optimization process. First, we give a general form of the MVDR where any unitary matrix can be used to estimate the spectrum. Second and most importantly, we show how the MVDR method can be used to estimate the magnitude squared coherence function, which is very useful in so many applications but so few methods exist to estimate it. Simulations show that our algorithm givesmuchmore reliable results than the one based on the popular Welch’s method.

FFT蝶形运算,C 语言,可有MATLAB M 语言转换实现(FFT butterfly computation, C language, MATLAB M language can be converted to achieve)

自己写的信噪比计算工具snr2.m snr2(s2ana,fs,f0,fl,fh,bl,bh) s2ana: 待分析信号 fs:采样频率 f0:信号频率 [fl,fh]:信号能量分散带(Their signal to noise ratio calculation tool written in snr2.m snr2 (s2ana, fs, f0, fl, fh, bl, bh) s2ana: to be analyzed signal fs: sampling frequency f0: signal frequency [fl, fh]: the signal with energy dispersive)

典型的SUI信道模型，经过验证。。。。。(SUI channel models typical, proven. . . . .)

loc pss simulink to show the behavier of system

包含Jacobi和Seidel两种迭代法，用于求解线性方程，计算简单，收敛快(Contains two kinds of Jacobi and Seidel iterative method for solving linear equations, computing simple, fast convergence)

说明：  介绍了信道估计中LS算法的matlab程序代码(Introduced in the LS channel estimation algorithm matlab code)

说明：  配电网潮流计算，前推回代法，matlab程序(distribution system calculation)

Easy calculator dswafrefewfreqfr

本代码是ja-sw 矢量磁滞模型的混合模型的代码，有两部分一部分是ja模型，另一部分是sw模型，两者混合变为矢量磁滞模型(This code is ja-sw vector hysteresis model hybrid model of the code, there are two parts ja model part, the other part is sw model, a combination of both into a vector hysteresis model)