signal_decod_1.m

来自「数字基带传输系统的MATLAB仿真实现 function [sampl,re_」· M 代码 · 共 27 行

function re_pcm=signal_decod_1(adjudged_ami)
%输入信号adjudged_ami为抽样判决后的AMI码型数字序列；输出信号re_pcm为恢复出的原始PCM脉冲编码信号%
for i=1:length(adjudged_ami),
  temp=adjudged_ami;
  if(temp(i)==0),
    re_pcm(i)=0;
  else
    re_pcm(i)=1;
  end
end  
%画图
l=length(adjudged_ami);
for x=1:l*10
   m=ceil(x/10);
   adjudged_ami1(x)=adjudged_ami(m);
   re_pcm1(x)=re_pcm(m);
end
figure(6);
t=1:length(adjudged_ami1);
subplot(2,1,1);
plot(t,adjudged_ami1,'g*-');
axis([-0.2 300 -1.2 1.2]);
title('AMI码');
subplot(2,1,2);
plot(t,re_pcm1,'b*-');
title('PCM码');
axis([-0.2 300 -0.2 1.2]);