diff --git a/targets/PROJECTS/CORRIDOR/generation_ca.m b/targets/PROJECTS/CORRIDOR/generation_ca.m
index 22036a3737..0ccd6c9b35 100644
--- a/targets/PROJECTS/CORRIDOR/generation_ca.m
+++ b/targets/PROJECTS/CORRIDOR/generation_ca.m
@@ -85,4 +85,7 @@ plot(linspace(-sample_rate/2,sample_rate/2,length(s)),20*log10(abs(fftshift(fft(
 
 %% save for later use (channel estimation and transmission with the SMBV)
 save('ofdm_pilots_sync_30MHz.mat','-v7','s1','s2','s3','f1','f2','f3','num_carriers','num_zeros','prefix_length','num_symbols_frame','preamble_length');
-mat2wv(s(1,:), 'ofdm_pilots_sync_30MHz.wv', sample_rate, 1);
+
+s_all = sum(s,1);
+s_all(1:5120) = s(1,1:5120);
+mat2wv(s_all, 'ofdm_pilots_sync_30MHz.wv', sample_rate, 1);