ms_sfun_qconvert.m

利用matlab/simulink仿真了CDMA2

function[sys,x0,str,ts]=MS_SFUN_QConvert(t,x,u,flag)
switch flag
    case 0
        [sys,x0,str,ts]=mdlInitializeSizes;
    case 2
        sys=mdlUpdate(t,x,u);
    case 3
        sys=mdlOutputs(t,x,u);
    case{1,4,9}
        sys=[];
    otherwise
        error(['Unhandled flag=',num2str(flag)]);
end


%mdlInitializeSizes
function[sys,x0,str,ts]=mdlInitializeSizes
sizes=simsizes;
sizes.NumContStates=0;
sizes.NumDiscStates=2;
sizes.NumOutputs=1;
sizes.NumInputs=1;
sizes.DirFeedthrough=1;
sizes.NumSampleTimes=1;
sys=simsizes(sizes);
x0=[0 0]';
str=[];
ts=[-1 0];

%mdlUpdate
function sys=mdlUpdate(t,x,u)
if x(1)==0
    x(2)=-1*u;
    x(1)=1;
else
    x(1)=0;
end
sys=x;

%mdlOutputs
function sys=mdlOutputs(t,x,u)
if x(1)==0
    sys=u;
else
    sys=x(2);
end