www.gusucode.com > ofdm结合2x2的m.. > ofdm结合2x2的m...构的WLAN环境数据传输仿真程序matlab版,包括信道估计和同步等模块/tx_freqd_to_timed.m
function time_syms = tx_freqd_to_timed(mod_ofdm_syms) global sim_consts; num_symbols = size(mod_ofdm_syms, 2)/sim_consts.NumSubc; n_antennas = size(mod_ofdm_syms, 1); resample_patt=[33:64 1:32]; time_syms = zeros(n_antennas, num_symbols*64); % Convert each antenna's signal to time domain for antenna = 1:n_antennas syms_into_ifft = zeros(64, num_symbols); syms_into_ifft(sim_consts.UsedSubcIdx,:) = reshape(mod_ofdm_syms(antenna,:), ... sim_consts.NumSubc, num_symbols); syms_into_ifft(resample_patt,:) = syms_into_ifft; % Convert to time domain ifft_out = ifft(syms_into_ifft); time_syms(antenna,:) = ifft_out(:).'; end