Math_1_2

基于matlab/simulink的SPWM仿真建模(Based on matlab/simulink simulation modeling of SPWM)

this file includes PWM rectifier document

仿真4-PAM（脉冲幅度调制）载波调制信号在AWGN（加性高斯白噪声AWGN(Additive White Gaussian Noise)）信道下的误码率和误比特率性能，并与理论值相比较。(Simulation 4-PAM (pulse amplitude modulation) modulation signal in AWGN (additive white Gaussian noise AWGN (Additive White Gaussian Noise)) under the channel bit error rate and bit error rate performance, and compared with the theoretical value.)

定义法计算计算Lorenz系统lyapunov指数，结果比较精确！ 可以改为任意3维动力系统的lyapunov指数的计算程序！(Define of the method to calculate the Lorenz system lyapunov index, accurate results! Can be changed to any 3-dimensional dynamical systems lyapunov index calculation program!)

本论文首先介绍了当前深空通信的编码调制技术的现状与发展，阐述了以往 的深空通信中的编码和调制技术的方案和局限性，提出LDPC码和FQPSK调制的 优越性和发展前景。第二章描绘了LDPC码的奇偶校验矩阵的图形表示、生成方 式和译码方法，并比较二元LDPC码和多元LDPC码的优越性和实现问题。第三 章在介绍FQPSK调制的方案的由来、改进和发展的基础上，对其进行了功率谱分 析，介绍了一些常规的解调方案。(This paper introduces the current situation and development of the technology of deep-space communication code modulation on the coding and modulation techniques in deep space communications program and limitations of the proposed of LDPC codes FQPSK modulation superiority and development prospects. Chapter II depicts a graphical representation of the LDPC code of the parity check matrix generation method and decoding method, and compare the superiority of binary LDPC codes and multiple LDPC code and implementation problems. Chapter origin in the introduction FQPSK modulation program, improvement and development on the basis of its power spectrum analysis, conventional demodulation.)

matlab code for implementation of y bus

说明：  矩阵LDLT分解与Cholesky分解 求矩阵A=（αij）20x20的LDLT分解与Cholesky分解(Matrix LDLT decomposition and Cholesky decomposition Matrix A = (αij) 20x20 of the LDLT decomposition and Cholesky decomposition)

LSVMK Langrangian Support Vector Machine algorithm LSVMK solves a support vector machine problem using an iterative algorithm inspired by an augmented Lagrangian formulation.

有关基于模型控制设计的方针程序,一般对于机器人以及大型装置都可以使用(programme based on Model control design)

高斯过程回归算法工具箱，很好用的，我用过(Gaussian process regression algorithm toolbox, well used, I used)