From 0fd40e13b293dee1561263fc4b3322e69890bc00 Mon Sep 17 00:00:00 2001
From: Jens Ahrensfeld <jens@jayfield.org>
Date: Tue, 29 Jul 2014 18:04:01 +0000
Subject: [PATCH] - Introduce frequency offset

git-svn-id: http://moon:8086/svn/matlab/trunk@8 801c6759-fa7c-4059-a304-17956f83a07c
---
 ofdm/ofdm_rx.m | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

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;