bode

说明：  求解方程-u"(x)+u(x)=exp(x)*(sin(x)-2*cos(x))两点边值问题(Solve the equation-u &quot (x)+ u (x) = exp (x)* (sin (x)-2* cos (x)) Boundary Value Problems)

用MATLAB生成bpsk信号，并通过AWGN信道的仿真。(MATLAB bpsk signal generation, and through the AWGN channel simulation.)

基于fdtd算法利用matlab软件编写的计算问题空间的程序，适合光电子和晶体等领域(Based on FDTD algorithm using matlab software to write the calculation problem of the space program, suitable for optoelectronic and crystal, etc)

simulation code for fir

LINGO和Excel在数学建模中的应用(LINGO and Excel in mathematical modeling)

半定规划内点法数据整理交直流系统统一无功优化算法，系数矩阵的确定。(Interior point method for semidefinite programming data collation AC and DC systems unified reactive power optimization algorithm to determine the coefficient matrix.)

这是一个完整的无线通信系统中物理层的仿真程序，通过扩频技术（直接序列扩频）让信号通过高斯，瑞利等信道进行信噪比分析，得出结论(This is a complete wireless communication systems in the physical layer of the simulation program, through the spread-spectrum techniques (Direct Sequence Spread Spectrum) to signal through the Gaussian, Rayleigh channel for signal to noise ratio, such as analysis, come to the conclusion)

可视化matlab程序，经过原作者改进版本！(Matlab visualization process, after the author to improve the version!)

现有的PID参数优化方法往往难以同时兼顾系统对快速性、稳定性与鲁棒性的要求，本文针对这一缺陷，提出了一种多目标PID优化设计方法——在满足系统的鲁棒性的前提下，以超调量、上升时间和调整时间最小作为多目标优化的子目标，并将NSGA-Ⅱ与PGA相结合对其求解。该算法求得的Pareto最优解分布均匀，收敛性和鲁棒性好，决策者可根据实际系统的要求在Pareto解集中选择最终的满意解，这为快速性、稳定性与鲁棒性的权衡分析提供了有效的工具。仿真结果表明本文设计方法的有效性和优越性。()

qpsk modulation and demodulation