dft_example

说明：  差分编码子程序,在调治之前对信号进行差分编码(differential coding subroutine, prior to the modulating signal differential coding)

说明：  混沌系统仿真软件，用于混沌系统的仿真；通过分析系统的参数和初始状态来观测混沌系统的运行轨迹。(Chaotic system simulation software for simulation of chaotic systems，Through the analysis of the parameters and the initial state of system to measure the trajectories of chaotic systems. )

Ordinary and Partial Differential Equation Routines in C, C++, Fortran, Java, Maple, and MATLAB

this is the source code for the comparison of kalman andd subkalman filtering

This is some MATLAB m-files to simulate a communication system using convlutional channel coding and Viterbi algorith of decoding.

完备经验模态分解，是EEMD的改进算法，有效的减小了模态混叠现象。(Complete empirical mode decomposition is EEMD improved algorithm effectively reduces the modal aliasing. .)

图像处理中的计算平均梯度的Matlab代码，用于去除图像中的噪声，增强图像信号等功能(The matlab code for computing average gradient)

BPSK仿真，Es/N0=0:10,得出BER与Es/N0的关系曲线，AWGN信道(BPSK simulation, Es/N0 = 0:10, come to the relationship between BER and Es/N0 curve, AWGN channel)

例3：分析占空比为ta的矩形脉冲频谱 T=1 时间窗大小 ta=0.5 占空比 N=256 t=linspace(-T,T,N) ts=2*T/N fs=1/ts (x=zeros(1,N) x(N/2-round(N/2*ta):N/2+round(N/2*ta))=ones(1,2*round(N/2*ta)+1) y=fft(x,N) figure plot(t,x) title([ 时域信号图 占空比为 ,num2str(ta)]) axis([-T T-0.2 1.2]) xlabel( t /s ) figure subplot(211) f=linspace(-fs/2,fs/2,N) plot(f,abs(fftshift(y))/N) title([ 矩形脉冲双边谱 脉冲时间t=[- ,num2str(ta*T), , ,num2str(ta*T), ] ]) xlabel( f /Hz ) )

实现GMSK的眼图程序，其中有fait程序及sincos程序代码，以及最后眼图的生成代码(Of GMSK eye diagram the the fait program and sincos code, and the final eye diagram generated code, which)