From bea03bfdd2b37289d57d5a88bda9984cdf4b5f52 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ismael=20G=C3=B3mez-Miguelez?= <gomezi@tcd.ie>
Date: Sat, 8 Mar 2014 12:33:26 +0000
Subject: [PATCH] Update README.md

---
 README.md | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/README.md b/README.md
index ac8273ebc..0c4f592b5 100644
--- a/README.md
+++ b/README.md
@@ -60,6 +60,21 @@ https://www.dropbox.com/s/txh1nuzdb0igq5n/demo_pbch.ogv
 
 ![Screenshopt of the PBCH example output](pbch_capture.png "Screenshopt of the PBCH example output")
 
+
+If you don't have a pair of USRP, you can also test the demo by writing the samples to a file and then reading them: 
+
+From the eNodeB, type
+
+```
+examples/enodeb_bch -o [output_file] -c [cell_id] [-h for more commands]
+```
+
+From the UE, type 
+```
+examples/mib_track -i [input_file] -c [cell_id] [-h for more commands]
+```
+
+
 * Cell Search Example
 
 This program uses any hardware supported by the UHD driver to scan an LTE band for active cells. See http://niviuk.free.fr/lte_band.php for a list of available bands. The program first obtains a power spectral density of the entire band. For all frequencies with an RSSI higher than a threshold, it tries to find the LTE Primary Synchronization Signal (PSS) and then identifies the CELL ID using the Secondary Synchronization Signal (SSS). Finally, it estimates the Carrier Frequency Offset (CFO) and Sampling Frequency Offset (SFO) and decodes the Master Information Block (MIB) from the PBCH.