qpskdemodulation

说明：  Belief Propagation (BP) Implementations gabp.m, run_gabp.m => Gaussian BP - parallel version asynch_GBP.m => Gaussian BP - serial version sparse_gabp.m, run_sparse_gabp.m => Gaussian BP - sparse version, optimized, tested on sparse matrices gabpms.ms, run_gabpms.m => Quadratic Min-Sum algorithm - Moallemi and Van-Roy

南宁地区用matlab计算标准有效温度（SET）的计算公式(Nanning area calculation standards using matlab effective temperature (SET) is calculated)

周期图法实现白噪声背景下的正弦函数功率谱估计,其中的傅里叶变换和谱估计的步骤都是直接写出,没有调用函数(Periodogram method the sine function in the white noise power spectrum estimation, one of the Fourier transform and spectral estimation steps are to write, not call the function)

关联维计算程序，以GP算法为主，计算2范数(Correlation dimension calculation program for GP-based algorithm to calculate the 2-norm)

Steffensen迭代法求非线性方程的根，和Steffensen加速迭代法求非线性方程的根做对比的例程，有详细中文注释。(Steffensen iteration method for the nonlinear equations of the root, and Steffensen iteration method for the nonlinear equations to accelerate root to do comparison routine, detailed notes in Chinese.)

1、不同阶次模拟巴特沃兹滤波器的频率响应 2、根据模拟滤波器指标，设计低通巴特沃兹滤波器 要求通带截止频率 fp = 5kHz, 通带最大衰减 ɑp =2dB， 阻带截止频率 fs= 12kHz, 阻 带最小衰减ɑs =30dB,按照上述指标设计巴特沃兹低通滤波器。 3、给定模拟滤波器，按照不同采样频率设计数字 IIR，观察采样频率对设计结果的影响 已知模拟滤波器传输函数 H(s)为 2 0.5012 ( ) 0.6449 0.7079 H s s s = + + 按照不同采样频率 Fs1=1Hz, Fs2=10Hz 使用脉冲响应不变法将 H(s)转换为 H(z)数字 IIR 滤波器。观察不同采样频率设计得到的数字 IIR 的差异。 4、给定数字 IIR 指标，用脉冲响应不变法设计 IIR。 数字低通滤波器的指标为: 0.2 , 1 , 0.3 , 15 p p s s ω π α ω π α = = = = dB dB ,使用巴特沃 兹滤波器设计数字 IIR。比较采样频率 Fs=1， 2 时设计过程中的模拟滤波器，数字滤波 器的变化。 5、用双线性变换法设计 IIR，并同脉冲响应不变法比较设计的结果。数字滤波器指标要 求如下 0.2 , 1 , 0.3 , 15 p p s s ω π α ω π α = = = = dB dB(1.Grasp the impulse response method and bilinear transformation design IIR filter principle and specific design methods, familiar with double A computer program for designing lowpass, bandpass and highpass IIR digital filters by linear design; 2 . familiar with the design of analog Butterworth filter, master impulse response method and bilinear transformation method to design digital IIR Filter method)

说明：  外点罚函数法解线性等式约束用matlab实现(Outside the penalty function method for solving linear equality constraints to achieve with matlab)

包含剪切波变换（以拉普拉斯金字塔变换为尺度剖分），以及该变换的压缩感知重构测试应用程序。(Contains shear wave transform (Laplace pyramid transform for the scale subdivision), as well as the transformation of compressed sensing reconstruction test application.)

基于simulink的单相不控整流桥电容负载的仿真模型(Single-phase controlled rectifier bridge capacitive load of the simulation model)

梁单元总体刚度矩阵组装matlab源程序(The beam element stiffness matrix of MATLAB general assembly source program)