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added some OCTAVE scripts for OFDM generation in ARCH/EXMIMO/USERSPACE/OCTAVE

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git-svn-id: http://svn.eurecom.fr/openair4G/trunk@4092 818b1a75-f10b-46b9-bf7c-635c3b92a50f
This commit is contained in:
Raymond Knopp
2013-08-22 08:41:32 +00:00
parent c4c98f913b
commit bd264860db
1 changed files with 22 additions and 0 deletions
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targets/ARCH/EXMIMO/USERSPACE/OCTAVE/OFDM_TX_FRAME.m
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function sig = OFDM_TX_FRAME(num_carriers,num_zeros,prefix_length,num_symbols_frame,preamble_length)
% sig - output signal
% sig_length - output signal length
% num_carriers - number of sub-carriers
% num_zeros - number of zero carriers minus 1 (DC)
% prefix_length - length of cyclic prefix
% num_symbols_frame - number of symbols per OFDM frame
% preamble_length - length of 4-QAM preamble
num_useful_carriers = num_carriers - num_zeros -1;
sig = [];
for k=1:preamble_length
QAM4_preamble = QAM_MOD(4,floor(256*abs(rand(1,num_useful_carriers/4))));
sig = [sig OFDM_TX(num_carriers,num_zeros,prefix_length,QAM4_preamble)];
end
for k=1:(num_symbols_frame - preamble_length)
QAM_data = QAM_MOD(256,floor(256*abs(rand(1,num_useful_carriers))));
sig = [sig OFDM_TX(num_carriers,num_zeros,prefix_length,QAM_data)];
end