zf_osic1.m

MC_CDMA具有良好的抗干扰和抗多径衰落过程

function data_out=zf_osic1(Rt1,H,Nt,Nr,wordsize);
H1=H;
G{1}=pinv(H1);
r{1}=Rt1;
i=1;
data_out=zeros(Nt,size(Rt1,2));
while i<Nt+1
    Normmin=inf;
    for j=1:Nt
        Normrow(j)=sum(abs(G{i}(j,:)).^2);
        if Normrow(j)<Normmin & Normrow(j)~=0
            Normmin=Normrow(j);
            k(i)=j;
        end
    end
    w{k(i)}=G{1}(k(i),:);
    y{k(i)}=w{k(i)}*r{i};
    s{k(i)}=demap(size(y{k(i)},2),wordsize,y{k(i)});
    r{i+1}=r{i}-H(:,k(i))*s{k(i)};
    H1(:,k(i))=zeros(size(H1(:,k(i))));
    G{i+1}=pinv(H1);
    i=i+1;
end
for j=1:Nt
    data_out(j,:)=s{1,j};
end