moden-comm-sys-using-matlab

图论中的kbmph算法，用于解决基于加权节点的Steiner树问题(Graph theory kmp algorithm for solving the problem based on a weighted Steiner tree node)

说明：  搭建BPSK+编码+交织仿真通信链路，仿真分析在不同信道条件下的不同译 码算法的误比特率性能。基于matlab，搭建BPSK+卷积编码+交织通信收发链路， 仿真参数如下： 1) 信源比特速率： 100 b R kbps = 2) 卷积编码：码率为1/2，生成多项式为（561,753） 3) 译码方式：维特比译码（硬判决译码、软判决译码（8 比特量化）） 4) 交织：行列交织，交织器深度为100bit，宽度为10； 5) 仿真点数：106(BPSK+ coding + interleaved simulation communication link)

说明：  信号处理的AR过程和MA过程模拟。并且计算输入与输出的能量频谱(Signal processing, AR and MA process simulation. And calculate the energy spectrum of the input and output)

已知一个二自由度机器臂的关节长度，给出一个圆形轨迹，让机器臂随轨迹移动。前提是轨迹在机器臂的工作空间内。(Known length of a two degree of freedom robotic arm joints to give a circular path, so that the robotic arm to move with the trajectory. The premise is the trajectory in the workspace of the robotic arm.)

计算任意两点（给定经纬度）的球面距离，并画出轨迹图。(Calculating any two points (given the latitude and longitude) of the spherical distance, and draw trajectories.)

利用matlab和ug联合进行齿轮设计，先求解，再建模，思路很新鲜(Ug joint use matlab and gear design, first solved, and then modeling, very fresh ideas)

dc motor pid modeled

一个基于MATLAB的粒子滤波程序，打开带参运行(lizilvbo)

matlab code for Plot data with error bars on both x and y axes

谱减法语音增强，包含基本谱减法，多带谱减法，以及自适应谱减法。(Spectral subtraction speech enhancement, contains the basic spectral subtraction, multi-band spectral subtraction, and adaptive spectral subtraction)