Practical_Quiz_3

Contemporary communication system一書之matlab範例程式(Contemporary communication system of a book s sample code matlab)

说明：  基于matlab的编程实现神经网络BP算法实现数据的分类(matlab bp)

Additive delay Linear matrix inequality simmulation

基于MATLAB编程能计算任意个节点的介数(Can calculate the betweenness of any node Based on MATLAB programming)

北斗二代卫星中37种伪随机码的产生程序代码，可选择几号卫星，生成4ms的伪随机码。(Beidou second generation satellite 37 kinds of pseudo-random code generation program code, you can choose a few satellites, generate 4ms pseudo-random code.)

首先声明此并非原创！（侵删！）但是这个资源非常非常难找。是我从外网找了很久down下来的。地球-火星发射机会搜索并做出著名的猪排图（porkchop图）。内有教程（英文），非常清楚。另外我也将星历文件de421.bin整合进去了。可以直接运行。(porkchop , DE421, Earth-Mars)

本程序用于线性调频信号频率的测量，首先产生一加噪线性调频信号，再使用小波滤波去除噪声，最后使用希尔伯特变换法求信号的频率。(This procedure is used to measure the frequency of chirp signal, first generate a chirp signal with noise, and then use wavelet filtering to remove noise, and finally use the Hilbert transform method for the signal frequency.)

对于一个房间 用PID和DMC控制空调温度控制系统(For a room with air-conditioning temperature control PID and DMC control system)

helps in maximal ratio combining,equal gain combining,snr improvement,select diversity

this code is to sample the signal