twopicture

conventional CRC coder for LTE-A

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 )

本文提出了基于二维混沌映射的数字图像水印算法，混沌具有随机性、似噪声及对初始条件的极端敏感性等特点。将经过二维混沌映射置乱后的数字水印信号嵌入图像小波域的低频系数，实现了数字水印的隐蔽性、保密性和稳固性；利用二维混沌映射Arnold变换对水印信号进行置乱，不仅增强了水印信号保密性，同时有效提高了视觉上抵抗图像剪切攻击的能力(failed to translate)

双幅线算法的研究，从新修正并改进了算法，可以仿真编程(matlab fft)

MATLAB应用大全一书的配书光盘第二十章源代码,该文件夹收录了本书涉及的源文件。收录了一些优秀应用实例信息，便于读者学习了解。(MATLAB application of a book chapter 20 CD attached with books source code, this folder contains the book files. Includes some excellent examples of application information, convenient for readers to learn. )

轮轨冲击信号的小波分析matlab程序,程序中H5V20zrail为轮轨冲击信号输入数据。(Wheel-rail impact of wavelet analysis matlab program, the program H5V20zrail impact signal for the wheel-rail input data.)

BER plot for SUI channel 1-6

小波包分析提取振动信号中的特征频率，最终的权值矩阵就是滤波器的系数，可直接计算得到多重分形谱。( Wavelet packet analysis to extract vibration signal characteristic frequency, The final weight matrix is ??the filter coefficient, It can be directly calculated multi-fractal spectrum.)

说明：  sar雷达成像的后向投影算法的matlab代码(Matlab code of backward projection algorithm for SAR radar imaging)

ofdm系统中如何抑制峰均比，该程序给出了经典的仿真(ofdm system, how to suppress the PAPR, the program gives the simulation of the classic)