out.m

包含了通信系统方面调制解调的基本仿真代码

function [sys,x0,str,ts]=Out(t,x,u,flag)
switch flag,
case 0,
    [sys,x0,str,ts]=mdlInitializeSizes;
case 3,
    sys=mdlOutputs(t,x,u);
case{1,2,4,9}
    sys=[];
otherwise
    error(['Unhandled flag =',num2str(flag)]);
end
function [sys,x0,str,ts]=mdlInitializeSizes
sizes=simsizes;
sizes.NumContStates=0;
sizes.NumDiscStates=0;
sizes.NumOutputs=2;
sizes.NumInputs=4;
sizes.DirFeedthrough=1;
sizes.NumSampleTimes=1;
sys=simsizes(sizes);
x0=[];
str=[];
ts=[0,0];
function sys=mdlOutputs(t,x,u)
if u(1)>u(2),u(1)>u(3),u(1)>u(4)
    sys=[1,1];
elseif  u(2)>u(1),u(2)>u(3),u(2)>u(4)
    sys=[0,1];
elseif  u(3)>u(1),u(3)>u(2),u(3)>u(4)
    sys=[0,0];
else
    sys=[1,0];
end