19 lines
558 B
Matlab
Executable File
19 lines
558 B
Matlab
Executable File
function m_sig_T = f_ofdm_mod(m_sym_T, d_N_FFT, d_N_CP, d_N_OFDM, v_active_rf, d_amp)
|
|
|
|
d_N_ant_act = sum(v_active_rf);
|
|
|
|
%** mapping useful data to favorable carriers **
|
|
m_sym_T_ext = zeros(d_N_FFT,d_N_OFDM,d_N_ant_act);
|
|
m_sym_T_ext(2:151,:,:) = m_sym_T(1:150,:,:);
|
|
m_sym_T_ext(362:512,:,:) = m_sym_T(151:301,:,:);
|
|
|
|
%** ifft **
|
|
m_sig_T_ = sqrt(d_N_FFT)*ifft(m_sym_T_ext,d_N_FFT,1);
|
|
|
|
%** add cyclic prefix **
|
|
m_sig_T_ = [m_sig_T_(end-d_N_CP+1:end,:,:); m_sig_T_];
|
|
d_L = (d_N_FFT+d_N_CP)*d_N_OFDM;
|
|
m_sig_T = floor(reshape(m_sig_T_,d_L,d_N_ant_act)*d_amp);
|
|
|
|
end
|