channel_estimation.m

OFDM系统的仿真代码MATLAB环境下

function cir_data_syms = channel_estimation(pilot_freq_syms)

global sim_consts;
global sign;

num_ofdm_syms = size(pilot_freq_syms,2);
for i = 1:num_ofdm_syms
    cir_pilot_syms(:,i) = pilot_freq_syms(:,i)./sim_consts.PilotSubcSymbols;
end

if sign == 1
    
    [cir_pilot_syms,MMS] = kalman_estimate(cir_pilot_syms(:,1), pilot_freq_syms, num_ofdm_syms);
    
end

cir_data_syms = dft_estimate(cir_pilot_syms);
%    for i = 1:sim_consts.NumPilotSubc
%        cir_data_syms(8*(i-1)+1:8*i,:) = repmat(cir_pilot_syms(i,:),8,1);
%    end