Nonlinear-simulation-model

本书采用matlab codes 详细介绍了有限元的编程和应用(this book introduces the finite element method in matlab codes)

说明：  遗传算法是计算数学中用于解决最佳化的搜索算法，是进化算法的一种。进化算法最初是借鉴了进化生物学中的一些现象而发展起来的，这些现象包括遗传、突变、自然选择以及杂交等。遗传算法通常实现方式为一种计算机模拟。对于一个最优化问题，一定数量的候选解（称为个体）的抽象表示（称为染色体）的种群向更好的解进化。传统上，解用二进制表示（即0和1的串），但也可以用其他表示方法。进化从完全随机个体的种群开始，之后一代一代发生。在每一代中，整个种群的适应度被评价，从当前种群中随机地选择多个个体（基于它们的适应度），通过自然选择和突变产生新的生命种群，该种群在算法的下一次迭代中成为当前种群。(Genetic algorithm (GA) is a search algorithm used to solve optimization in computational mathematics. It is one of evolutionary algorithms. Evolutionary algorithms were originally developed by borrowing phenomena in evolutionary biology, such as heredity, mutation, natural selection and hybridization. Genetic algorithms are usually implemented as a computer simulation. For an optimization problem, an abstract representation of a certain number of candidate solutions (called individuals) (called chromosomes) evolves towards a better solution. Traditionally, solutions are represented in binary (that is, strings of zeros and ones), but other representations are possible. Evolution begins with a population of completely random individuals, and it happens from generation to generation.)

Space Time Trellis Code soure code

图论中最短路径算法Dijkstra算法实现，很有用的(Shortest path algorithm Dijkstra algorithm in graph theory, useful)

实现QAM调制解调，分为16QAM、64QAM，包括瑞利信道的仿真程序，可以供初学参考。(Implementation of QAM modulation and demodulation, divided into 16QAM, 64QAM, including Rayleigh channel simulation program, can be reference for beginners.)

基于离散泊松方程解的相位解包裹离散余弦算法(Solution of the discrete Poisson equation)

这个程序用来说明怎样通过findall函数来实现matlab不同GUI之间来传递参数。(This program is used to illustrate how findall function to pass parameters between matlab different GUI.)

An program for transmission line is given in this file.For Short the length is 80 km,for medium 80 to 250 km and for long transmission length is given by 250 km above.

随机信号分析，包括随机信号的数字特征，相关函数和协方差，带图形显示。(Random signal analysis, including the number of characteristics of random signals, correlation functions and covariance, with graphical display.)

说明：  通信编码译码软件开发主要用于一些常规软件的实现(Communication code decoding software development is mainly used for the realization of a number of conventional software)