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git-svn-id: http://svn.eurecom.fr/openair4G/trunk@4832 818b1a75-f10b-46b9-bf7c-635c3b92a50f

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This commit is contained in:
Raymond Knopp
2014-01-08 18:29:56 +00:00
parent 3e6ed88348
commit 283e9ce2d3
1 changed files with 8 additions and 5 deletions
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targets/ARCH/EXMIMO/USERSPACE/OCTAVE/OFDM_TX_FRAME.m
+8 -5
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@@ -1,4 +1,4 @@
function sig = OFDM_TX_FRAME(num_carriers,num_zeros,prefix_length,num_symbols_frame,preamble_length)
function [sig, sig_f] = OFDM_TX_FRAME(num_carriers,num_zeros,prefix_length,num_symbols_frame,preamble_length)
% sig - output signal
% sig_length - output signal length
@@ -10,13 +10,16 @@ function sig = OFDM_TX_FRAME(num_carriers,num_zeros,prefix_length,num_symbols_fr
num_useful_carriers = num_carriers - num_zeros -1;
sig = [];
sig = zeros(1,(num_carriers+prefix_length)*num_symbols_frame);
sig_f = zeros(num_symbols_frame,num_useful_carriers);
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)];
sig((k-1)*(num_carriers+prefix_length)+1:k*(num_carriers+prefix_length)) = OFDM_TX(num_carriers,num_zeros,prefix_length,QAM4_preamble);
sig_f(k,:) = QAM4_preamble;
end
for k=1:(num_symbols_frame - preamble_length)
for k=preamble_length+1:num_symbols_frame
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)];
sig((k-1)*(num_carriers+prefix_length)+1:k*(num_carriers+prefix_length)) = OFDM_TX(num_carriers,num_zeros,prefix_length,QAM_data);
sig_f(k,:) = QAM_data;
end