cp0204_channel_estimat.m

来自「uwb无线电基础书本（电子工业出版社）的MATLAB程序」· M 代码 · 共 22 行

function [H_estimat,Y_data] = cp0204_channel_estimat(Y,N,N_pilot,pilot,N_OFDM)
n_symbol_per_ofdm = N - 1 - N_pilot - 1;
Y_data = zeros(1,n_symbol_per_ofdm*N_OFDM);
H_estimat = zeros(1,(N-1)*N_OFDM);
n_distance = N/N_pilot;

for i = 1:N_OFDM
    for j = 1:N_pilot
      if j==N_pilot
       n_last = N-1-(j-1)*n_distance-1;
       Y_data(1+(n_distance-1)*(j-1)+(i-1)*n_symbol_per_ofdm:n_last-1+(n_distance-1)*(j-1)+(i-1)*n_symbol_per_ofdm) = Y(2+n_distance*(j-1)+(i-1)*2*N:6+n_distance*(j-1)+(i-1)*2*N);
      else
       H_estimat(1+(j-1)*n_distance+(i-1)*(N-1)) = Y(1+1+(j-1)*n_distance+(i-1)*2*N)/pilot;   %估计的信道
       H_estimat(i*(N-1)) = Y(N+(i-1)*2*N)/pilot;%尾部处理
       Y_data(1+(n_distance-1)*(j-1)+(i-1)*n_symbol_per_ofdm:7+(n_distance-1)*(j-1)+(i-1)*n_symbol_per_ofdm) = Y(3+n_distance*(j-1)+(i-1)*2*N:9+n_distance*(j-1)+(i-1)*2*N);
      end
    end
end