shorttraining.asv

OFDM的PHY发射端matlab实现程序

    function shortout=shorttraining()
    k=-26:26;
    S=zeros(1,length(k));
    for i=1:53
        if i==3||i==11||i==23||i==39||i==43||i==47||i==51
           S(i)=1+j;
        elseif i==7||i==15||i==19||i==31||i==35
           S(i)=-1-j;
        else S(i)=0;
        end
    end
    shortS=S.*sqrt(13/6)
    straining=zeros(1,64);
    for i=1:26
        straining(i+38)=shortS(i);
    end
    for i=28:53
        straining(i-26)=shortS(i);
    end
    shorttraining=ifft(straining);
    kuozhan=[shorttraining,shorttraining,shorttraining];
    shortkuo=zeros(1,161);
    for i=1:161
        shortkuo(i)=kuozhan(i);
    end
    W=zeros(1,161);
    for k=1:161
        if k==1||k==161
            W(k)=0.5;
        elseif k>=2&&k<=160
            W(k)=1;
        end
    end
    a=W;
    shortout=shortkuo.*(W);