matlaborder

manupulates vectors and matrices

说明：   empirical formula with kaiser clc clear all fs=1000 fc=250 df=50 r=0.001 f=fc/fs dw=2*pi*(df/fs) a=-20*log(r) n=floor(((a-8)/(2.285*dw))+1) if a>50 b=0.1102*(a-8.7) elseif a>=21 && a<=50 b=0.5842*((a-21)^0.4)+0.07886*(a-21) elseif a<21 b=0.0 end w=kaiser(n,b) for i=1:n if i~=(n-1)/2 hd(i)= (2*f*sin((i-((n-1)/2))*2*pi*f))/((i-((n-1)/2))*2*pi*f) elseif i==(n-1)/2 hd(i)=2*f end end for j=1:n h(j)=w(j)*hd(j) end subplot(3,1,1), plot(w) subplot(3,1,2), plot(h) subplot(3,1,3), plot(h,n)

FSK调制方法 (FSK modulation)

窗函数法设计数字滤波器——海明窗 非原创 原文章名称：基于窗函数法的FIR数字滤波器的设计 作者：张志田 何其文 湖南工业职业技术学院 电气工程系 刊载于湖南科技学院学报 2007年9月 第28卷9期(Window function method to design digital filters- Hamming window of non-original name of the original article: window function based on the design of FIR digital filters: Zhang Zhitian He Qiwen Hunan Vocational College of Electrical Engineering of Hunan University of Science published in 2007 Volume 28 on September 9)

说明：  生成第五级的高斯函数,它用来作为uwb的发射脉冲(Gaussian function, it is used as the launch pulse UWB)

For data which is reasonably distributed i.e., few if any outliers the result should be comparable to the std function.

主要是QAM与16PSK频谱仿真、误码率比较仿真以及各自的星座图(Mainly QAM spectrum with 16PSK simulation, emulation, and error rate between the respective constellation)

利用LFSR生成伪随机序列（m序列） 对待隐藏的图像进行加密然后利用线性插值的方法隐藏于载体图像中。 代码很完整 用的是MATLAB7.0(Use LFSR to generate pseudo-random sequence (m sequence) to treat encryption to hide the image and then use linear interpolation method of hidden images in the vector. Complete code is used in MATLAB7.0)

说明：  利用傅立叶反变换自动生成随机分形面，可生成各向同性或各向异性的。(Generating the 2D fractal surfaces using inverse DFT method)

the code extract rules for a fuzzy system from a time series