diff --git a/ofdm/ofdm_rx.m b/ofdm/ofdm_rx.m
index 6174c66..a17b4d3 100644
--- a/ofdm/ofdm_rx.m
+++ b/ofdm/ofdm_rx.m
@@ -5,9 +5,12 @@ close all;
 CP_SIZE = 256;
 FFT_SIZE = 1024;
 fa = 48000;
-
+fo = 0.0;
 k_fft = 2*sqrt(FFT_SIZE);
 
+% Introduce frequency offset
+x = 0.5*exp(i*2*pi.*(0:length(x)-1)*fo/fa)' .* x;
+
 figure;
 Ns = (CP_SIZE + FFT_SIZE);
 Nf = length(x)/Ns;