function?y=duc2ddc（x）
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%輸入復(fù)基帶信號%%%%%%%%%%%%%%%%%%%
n=length（x）;
in=real（x）;
qn=imag（x）;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%插值%%%%%%%%%%%%%%%%%%%%%%%%%%%%
ncz=n*64;
incz=zeros（1ncz）;
qncz=zeros（1ncz）;
for?i=1:ncz
????if?mod（i-164）==0
????????incz（i）=in（（i-1）/64+1）;
????????qncz（i）=qn（（i-1）/64+1）;
????end
end
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%濾波%%%%%%%%%%%%%%%%%%%%%%%%%%%%
fp=100000;
fs=300000;
ftcz=25.6*10^6;
[OrWnbetaftype]?=?kaiserord（[fpfs][10][0.010.01]ftcz）;
b=fir1（OrWnftypekaiser（Or+1beta）‘noscale‘）;
inczf=filter（b1incz）;
qnczf=filter（b1qncz）;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%上變頻%%%%%%%%%%%%%%%%%%%%%%%%%%%%
fc=10*10^6;
induc=inczf.*cos（2*pi*fc/ftcz*（0:ncz-1））;
qnduc=qnczf.*sin（2*pi*fc/ftcz*（0:ncz-1））;
s=induc+qnduc;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%加噪聲%%%%%%%%%%%%%%%%%%%%%%%%%%%%
snr=15;
r=awgn（ssnr‘measured‘）;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%下變頻%%%%%%%%%%%%%%%%%%%%%%%%%%%%
inddc=r.*cos（2*pi*fc/ftcz*（0:ncz-1））;
qnddc=r.*sin（2*pi*fc/ftcz*（0:ncz-1））;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%濾波%%%%%%%%%%%%%%%%%%%%%%%%%%%%
inddcf=filter（b1inddc）;
qnddcf=filter（b1qnddc）;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%抽取%%%%%%%%%%%%%%%%%%%%%%%%%%%%
incq=zeros（1n）;
qncq=zeros（1n）;
for?i=1:ncz
????if?mod（i-164）==0
????????incq（（i-1）/64+1）=inddcf（i）;
????????qncq（（i-1）/64+1）=qnddcf（i）;
????end
end
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%返回復(fù)基帶信號%%%%%%%%%%%%%%%%%%%
y=incq+1i*qncq;
end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????1614??2014-01-06?15:56??mvdr2.m

?????文件???????1981??2014-01-02?09:53??mvdr3.m

?????文件???????1717??2014-01-07?12:16??duc2ddc.m

?????文件???????2740??2013-12-02?21:34??mvdr1.m

-----------?---------??----------?-----??----

?????????????????8052????????????????????4