function [x,y]=Binary(a);
%%%本函數(shù)是將a轉換為二進制，并交換順序
if (a==3),
    d=[1,1];
elseif(a==2),
    d=[0,1];
elseif(a==1),
    d=[1,0];
elseif(a==0),
    d=[0,0];
else
    error('There is something wrong with your Receiver')
end
x=d(1);
y=d(2);