get_ofdm_pilots.m

国外大学的同志作出来的好程序

function PilotSymbols=get_ofdm_pilots(ofdm_sim);
%Get the pilot tones for OFDM.
%
%

%get pilot tones.
if strcmp(lower(ofdm_sim.pilot_type), 'ieee802_11a'),
    PilotSubcSymbols=[1;1;1;-1];

elseif ~isempty(findstr(lower(ofdm_sim.pilot_type), 'mseq')),
    PilotSymbols=get_preamble(ofdm_sim.preamble_type, ofdm_sim.Np);
end

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%For multiple antennas
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
if ofdm_sim.tx_num>1,
    disp('MIMO Feature is coming soon...');
    PilotSymbols=[];
    return;
end