Earthquake-prediction

matlab code for image preprocessing

离散数学用matlab实现，包括手实例(about matlab，about sign)

Turbo码的编、译码算法对误码率的影响(Effect of Encoding and Decoding Algorithm of Turbo codes bit error rate)

说明：  模糊控制理论与实践 电子书 涂承宇 地震出版社(Fuzzy Control Theory and Practice of e-books Tu承宇seismic Press)

使用matlab编写的一个m文件，主要是计算图像的信息熵(Matlab use m the preparation of a document, the main image is the calculation of information entropy)

Hamming窗加权非线性调频脉冲压缩程序(Hamming window weighted linear FM pulse compression process)

广义最小二乘辨识的matlab实现，运行通过(Generalized Least Squares Identification realize matlab, run through)

这里给出了双向中继系统基于AF协议下的relay beamforming 优化算法，仿真重现了一篇transactions上的文章(Relay beamforming simulation of two-way relay communication under AF protocol, the simulation is for a paper on transactions, it put forward three kinds of optimization algorithm.)

对复杂网络进行判定是否是连通图，输入参数是网络的邻接矩阵，如果是连通图，输出是1，如果不是，输出0.(directed or undirected graph)

OFDM信号在无线通信中会受到多普勒频移的影响，从而影响了OFDM信号的正交性，引起载波间的干扰和OFDM信号符号间的干扰，本代码先形成含有N个二进制码元的信号，而这个信号的前半部分和后半部分的信号是一样的，然后根据把这个信号调制成OFDM信号，最后接收端根据这个OFDM信号估计出多普勒因子(OFDM signal in a wireless communication will be subject to Doppler shift of influence, thus affecting the OFDM signal orthogonality, causing interference and interference between the OFDM signal symbol between carriers, the code first formed comprising N binary symbols signal, and the first and second halves of this signal is the same signal, and then the OFDM signal according to the estimated Doppler factor modulates the signal to the OFDM signal received, the last side)