QAM-modulation

说明：  设计中心波长在1550nm,光栅长度、折射率调制深度等可调，可以仿真出FBG的透射谱(The design center wavelength is 1550 nm. The grating length and refractive index modulation depth can be adjusted.The transmission spectrum of FBG can be simulated.)

产生 正态白噪声序列 (1) 打印出前50个数 (2) 分布检验 (3) 均值检验 (4) 方差检验 (5) 计算相关函数 Bx(i),i=0,±1,±2,…, ±10。 B(m)=1/1000 (Have a normal white noise sequence (1) print out the top 50 the number of (2) the distribution of test (3) the mean test (4) of variance test (5) calculating the correlation function Bx (i), i = 0, ± 1, ± 2 , ..., ± 10. B (m) = 1/1000)

求取信号的包络，信号的包络含有重要的调制信息，本程序给出了求取信号包络的方法(To strike a signal envelope, signal modulation envelope contains important information, this program gives way to strike a signal envelope)

灰色预测GM（1，1）模型的matlab源代码，包括预测模型的建立，以及模型的精度检验指标c,p的计算(Gray prediction GM (1,1) model matlab source code, including the prediction model, as well as indicators of model accuracy test c, p calculation)

构造围长8列重4的准循环的LDPC码的MATLAB源码(constructs girth-eight column-weight four LDPC codes Coding and Information Theory. girth-eight, QC-LDPC Codes)

adaptive filter matlab codes. The folder contains LMS and LMA functions

Gemesa_E-diagram Gemesa_E-diagram Gemesa_E-diagram

this file is about work to matlab

基于ANSYS APDL二次开发的航电设备的动力学扫频分析，载荷输入条件为交越频率以下为恒定位移，交越频率以上为恒定加速度。我将加速度输入转换为位移输入，将位移和加速度两段输入载荷统一按照位移载荷输入，将位移存入表数组，利用ANSYS APDL自动将扫频范围内的位移载荷存入表数组，并循环加载计算，实现了该工程结构的正弦扫频振动分析。(Kinetic sweep analysis, load input conditions of secondary development based on ANSYS APDL avionics for the crossover frequency less constant displacement, above the crossover frequency is constant acceleration. I will convert the input displacement input acceleration, displacement and acceleration loads unity in accordance with the displacement of the two input load input, the displacement of the array into the table using ANSYS APDL automatically load displacement within the sweep range of the array into the table, and cyclic loading calculated to achieve a swept sine vibration of the project structure.)

csdn上下载的闭形式抠图算法代码，Matlab实现。(A closed form solution for matting)