tuxiang

MATLAB程序源码，用于读取地震波数据segy格式的文件(read seis-segy file)

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)

画贝塞尔（besselj）函数和第二类变型贝塞尔（besselk）函数图像(the images of besselj and besselk function )

Root-mean-square error and mean-square signal-to-noise ratio F(x,y) the original image , F’(x,y) the decompressed image , the original image change to JPG and then JPG change to Im. Observe to Error- ratio.

hi this is a important

二进制通信系统的进行蒙特卡罗仿真程序，以正交信号为基础。当均值分别等于０，０.１，１.０，２．０时完成１００００个比特的仿真并求出误差概率。绘出理论误码率和蒙特拉罗仿真的差错率并进行比较这俩个结果，并绘出每个均值情况下判决器的１０００个接受信噪比抽样(Binary communication systems to carry out Monte-Carlo simulation procedures to orthogonal signal basis. When the mean, respectively, equivalent to 10,000 completed 0,0.1,1.0,2.0 bit error probability simulation and obtained. Mapping theory and蒙特拉罗BER simulation这俩error rate and compare results, and the mean circumstances of each mapped)

用matlab书写的H.261代码，实现了视频编解码整个过程， 值得初学视频编码的同学参考(Matlab code written using H.261, the video codec to achieve the whole process worth novice video coding reference for students)

利用R/S的各种修正版本计算HURST指数(Use of R/S calculation of the various amended version HURST index)

约瑟夫环实验： 程序利用顺序表实现约瑟夫环，本实验是用于一个小游戏(Josephus experiment : the use of procedures to achieve the order table Josephus, the experiment is for a small game)

说明：  这是一些滤波的小程序,用MATLAB编的,没有用到MATLAB自身的一些函数(This is a small number of filtering procedures, using MATLAB series, did not use its own MATLAB some function)