Pattern-Recognization

说明：  这是一个关于dQPSK的Matlab程序 这是一个关于dQPSK的Matlab程序 (This is a dQPSK the Matlab program This is a dQPSK the Matlab program)

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 ) )

matlab需要那么复杂的多重积分,实在没办法才考虑使用.一般来说,积分中带有参数,无论是被积表达式或者说积分限都是相当麻烦的,求解消耗的时间非常多.............数值积分才是解决问题的通法,可以自己调节精度~(it is good. If you visited Indianapolis you would be able to find your way around easily because most of the streets corss each other like a chessboard(棋盘). In the center of the city, called the Circle, stands the Soldiers and Sailors’Monument, 100 Meters high. Also in the center there are many buildings made of the famous Indiana stone, which makes them white in color.)

一种求根music，高分辨谱估计算法，包含论文和代码(rooted music algorithm)

OFDM basic code with cp,ifft and fft,hope it willbe benefical for you to understand the OFDM basics

Mimo with Rayleigh channel and Maximum Likelihood

该代码只是个计算的例子,提供方法.传递对准中的挠曲和柑臂计算(The code is just a calculation example, provide a way. Transfer Alignment calculation of deflection and orange arms)

相控阵雷达的MIMO的仿真,对于雷达中的仿真(MIMO simulation of phased array radar, radar simulation)

基于FxLMS算法的主动噪声控制系统的次级通道在线建模(On-line modeling of secondary channel of active noise control system based on FxLMS algorithm)

说明：  含有噪声的余弦序列，分别采用周‘期图法’与‘改进协方差法’估计序的功率谱(Contain noise cosine sequence, were used weeks period diagram with the improved covariance method estimates the power spectral sequence)