www.pudn.com > WiMAX_Downlink_802.16e_Matlab.zip > getpilot.m, change:2007-06-20,size:1299b

function output=getpilot(input) 
%协议对一帧中导频位置的规定 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
evenpilot=[923 927 769 773 839 843 615 619 895 899 685 689 96   100 460 464 755 759 741 745 292 296 531 535];   
oddpilot=[919 931 765 777 835 847 611 623 891 903 681 693 92   104 456 468 751 763 737 749 288 300 527 539]; 
   
p_even_pilot=sort(evenpilot)+1; 
p_odd_pilot=sort(oddpilot)+1; 
%p_even_pilot=[ 97  101  293  297  461  465  532  536  616  620  686  690  742  746  756  760  770  774  840  844  896  900  924  928]; 
%p_odd_pilot =[ 93  105  289  301  457  469  528  540  612  624  682  694  738  750  752  764  766  778  836  848  892  904  920  932]; 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
 
output=[]; 
temp=[]; 
k=0; 
flag=0; 
 
for i=1:26624 
    if( ((i/1024)>1)&&((i/1024)=25)) 
        k=k+1; 
        temp(k)=input(i); 
        if (k==1024) 
            k=0; 
            if(flag==0) 
                output=[output,temp(p_even_pilot)]; 
                flag=mod(flag+1,2); 
            else 
                output=[output,temp(p_odd_pilot)]; 
                flag=mod(flag+1,2); 
            end 
        end  
    end 
end