GVD

采用栅格对机器人的工作空间进行划分，再利用优化算法对机器人路径优化，是采用智能算法求最优路径的一个经典问题。目前，采用蚁群算法在栅格地图上进行路径优化取得比较好的效果，而利用遗传算法在栅格地图上进行路径优化在算法显得更加难以实现。 利用遗传算法处理栅格地图的机器人路径规划的难点主要包括：1保证路径不间断，2保证路径不穿过障碍。 用遗传算法解决优化问题时的步骤是固定的，就是种群初始化，选择，交叉，变异，适应度计算这样，那么下面我就说一下遗传算法求栅格地图中机器人路径规划在每个步骤的问题、难点以及解决办法。(It is a classical problem to divide the workspace of the robot by grids and optimize the path of the robot by using optimization algorithm. At present, the ant colony algorithm is used to optimize the path on the grid map, and the genetic algorithm is used to optimize the path on the grid map, which is more difficult to achieve. The difficulties of using genetic algorithm to deal with the path planning of robot on raster map mainly include: 1. guaranteeing that the path is uninterrupted, 2. guaranteeing that the path does not cross obstacles. The steps of genetic algorithm in solving optimization problems are fixed, that is, population initialization, selection, crossover, mutation, fitness calculation. Then I will talk about the problems, difficulties and solutions of genetic algorithm in each step of robot path planning in raster map.)

说明：  扩频通信中的两大常见扩频方式，直接序列扩频和跳频(Direct sequence spread spectrum and frequency hopping are two common spread spectrum methods in spread spectrum communication)

压缩包内源码的主要用途是：ASK调试方式的matlab实现(The main purpose of this source is the matlab implementation of ASK debug mode)

button FM Synthesis model(button Models FM Synthesis)

通信系统中调制解调串并转换，符号映射，载波调制，相干解调等模块的matlab仿真文件，适合通信工程中的调制技术的仿真工作(Communication system and installed for the modem string, symbol mapping, modulation, coherent demodulation module matlab simulation files, suitable for simulation of communication engineering work modulation techniques)

说明：  本代码适用于随机场中的KL正交展开，可用于描述参数的空间变异。(This code is suitable for KL orthogonal expansion in random fields and can be used to describe the spatial variation of parameters.)

多种信道的研究论文，尤其是cramer通道的详细研究与仿真。(Multi-channel research papers, in particular a detailed study of cramer channel and simulation.)

关于matlab的方法及实例，有效，全面，是数学建模的好帮手(about matlab)

This program implements equation (2.26) using the waterfilling algorithm

16QAM调制与解调，可以实现不同信道噪声下的误码率计算，并画出频谱和星座图(16QAM modulation and demodulation error rate calculated under different channel noise and draw the spectrum and constellation)