%TE-信道模型，生成經過信道的接受序列
%copyright:flyingxiang
function [y]=canal2(out_iserial,h,var,amp)
%得到經過信道的輸出
K=length(h);
N=length(out_iserial);
x=out_iserial;
b=[zeros(1,K-1) x];
env=2*x-1;
b=2*b-1;
z=amp*conv(h,b);
y=zeros(1,length(b)-(K-1));
for i=K:length(b)
  v(i-(K-1))=z(i);
end
randn('state',0);
n=randn(N,1)*sqrt(var);
%n=normrnd(0,sqrt(var),N,1);
y=v'+n;