apsk

ybus case distributed-generation_distribution-system_Newton-Laphson

gauss-seidel算法实现对方程组的求解(gauss-seidel algorithm for the equations)

牛顿拉夫逊法潮流计算程序，已测试40个节点，内附参考结果和典型系统的描述，很全的资料(Newton Raphson power flow program, 40 nodes have been tested, the results and typical system containing a reference to the description, it is all the information)

典型梁元的考虑几何非线性效应的牛顿法迭代程序，使用者可以在此基础上添加自己的有限元程序(Consider typical beam element geometry of the Newton method of nonlinear effects of iterative process, the user can add their own based on the finite element program)

一维热传导方程的MATLAB计算,使用隐式差分格式，追赶法计算(1 dimension matlab calculaiton )

A New Low-Complexity Selected Mapping Scheme Using Cyclic Shifted IFFT for PAPR Reduction in OFDM Systems

％radon transform clear all ％ N=800 n=1:N fs=200 t=n/fs x1=exp(j*2*pi*(5*t+0.5*5*t.^2)) x2=exp(j*2*pi*(5*t+0.5*15*t.^2)) x=x1+x2 ％N=length(x) ％ ambifunb(x ) ％*****************************************RAT naf=ambifunb(x) htl(abs(naf)) ％ [wh,rho,theta]=htl(abs(naf)) colormap([0,0,0]) ％ xlabel( 极半径 ) ％ ylabel( 角度 ) ％**************************************％找出峰值点的坐标,计算初始频率和调频斜率(正确) ％找出峰值点的坐标 b=max(max(wh)) [u,a]=find(wh>=0.8*b) ( Radon transformclear all N = 800 n = 1: N fs = 200 t = n/fs x1 = exp (j* 2* pi* (5* t+ 0.5* 5* t. ^ 2)) x2 = exp ( j* 2* pi* (5* t+ 0.5* 15* t. ^ 2)) x = x1+ x2 N = length (x) ambifunb (x)***************************************** RATnaf = ambifunb (x) htl (abs (naf)) [wh, rho, theta ] = htl (abs (naf)) colormap ([0,0,0]) xlabel (polar radius) ylabel (angle)************************************** to find the coordinates of the peak point, calculating the initial slope of the frequency and FM (right) find the peak point of the coordinates b = max (max ( wh)) [u, a] = find (wh)

说明：  一个FIR数字低通滤波器的设计，在CCS设计之前先在MATLAB中进行仿真，观察一下效果。并得到参数，然后再导入CCS中，用CCS实现FIR滤波器的设计。(A low-pass FIR digital filter design, design before the CCS in the MATLAB simulation and observe the results. And are parameters, and then import the CCS, the CCS to achieve with FIR filter design.)

bisection method for numerical analysis

直接序列扩频，信道采用重复编码，2psk调制，针对白噪声，多径环境下的误码率仿真(Direct sequence spread spectrum, channel coding using repeated, 2psk modulation, for white noise, BER simulation of multipath environments)