jiangx
20d52e1953
git-svn-id: http://svn.eurecom.fr/openair4G/trunk@5910 818b1a75-f10b-46b9-bf7c-635c3b92a50f
19 lines
558 B
Matlab
19 lines
558 B
Matlab
function m_sig_T = f_ofdm_mod(m_sym_T, d_N_FFT, d_N_CP, d_N_OFDM, v_active_rf, d_amp)
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d_N_ant_act = sum(v_active_rf);
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%** mapping useful data to favorable carriers **
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m_sym_T_ext = zeros(d_N_FFT,d_N_OFDM,d_N_ant_act);
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m_sym_T_ext(2:151,:,:) = m_sym_T(1:150,:,:);
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m_sym_T_ext(362:512,:,:) = m_sym_T(151:301,:,:);
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%** ifft **
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m_sig_T_ = sqrt(d_N_FFT)*ifft(m_sym_T_ext,d_N_FFT,1);
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%** add cyclic prefix **
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m_sig_T_ = [m_sig_T_(end-d_N_CP+1:end,:,:); m_sig_T_];
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d_L = (d_N_FFT+d_N_CP)*d_N_OFDM;
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m_sig_T = floor(reshape(m_sig_T_,d_L,d_N_ant_act)*d_amp);
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end
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