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ICC 2015 version

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git-svn-id: http://svn.eurecom.fr/openair4G/trunk@5910 818b1a75-f10b-46b9-bf7c-635c3b92a50f
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jiangx
2014-10-20 10:26:02 +00:00
parent 9465ca9888
commit 20d52e1953
26 changed files with 1291 additions and 12 deletions
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targets/PROJECTS/TDDREC/f_ofdm_rx.m
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%
% PURPOSE : OFDM Receiver
%
% ARGUMENTS :
%
% m_sig_R : received signal with dimension ((d_N_FFT+d_N_CP)*d_N_ofdm) x d_N
% d_N_FFT : total carrier number
% d_N_CP : extented cyclic prefix
% d_N_OFDM : OFDM symbol number per frame
% v_active_rf : active RF antenna indicator
%
% OUTPUTS :
%
% m_sym_R : transmitted signal before IFFT with dimension d_N_f x d_N_ofdm x d_N_ant_act
%
%**********************************************************************************************
% EURECOM - All rights reserved
%
% AUTHOR : Xiwen JIANG, Florian Kaltenberger
%
% DEVELOPMENT HISTORY :
%
% Date Name(s) Version Description
% ----------- ------------- ------- ------------------------------------------------------
% Apr-29-2014 X. JIANG 0.1 creation of code
%
% REFERENCES/NOTES/COMMENTS :
%
% - Based on the function "genrandpskseq" created by Mirsad Cirkic, Florian Kaltenberger.
%
%**********************************************************************************************
function m_sym_R = f_ofdm_rx(m_sig_R, d_N_FFT, d_N_CP, d_N_OFDM, v_active_rf)
d_N_ant_act = sum(v_active_rf);
m_sig_R_eff = m_sig_R(:,find(v_active_rf));
m_sig_R_f = reshape(m_sig_R_eff,(d_N_FFT+d_N_CP),d_N_OFDM,d_N_ant_act);
%** delete the CP **
m_sig_R_noCP = m_sig_R_f(d_N_CP+1:end,:,:);
%** fft **
m_sym_R_fft = 1/sqrt(d_N_FFT)*fft(m_sig_R_noCP,d_N_FFT,1);
%m_sym_R_fft = fft(m_sig_R_noCP,d_N_FFT,1);
m_sym_R = m_sym_R_fft([2:151 362:512],:,:);
end