--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/wifi/model/snr-tag.h	Sun Feb 10 13:38:35 2013 -0500
@@ -0,0 +1,68 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2005,2006 INRIA
+ * Copyright (c) 2009 MIRKO BANCHI
+ * Copyright (c) 2013 University of Surrey
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
+ * Author: Mirko Banchi <mk.banchi@gmail.com>
+ * Author: Konstantinos Katsaros <dinos.katsaros@gmail.com>
+ */
+
+#ifndef SNR_TAG_H
+#define SNR_TAG_H
+
+#include "ns3/packet.h"
+
+namespace ns3 {
+
+class Tag;
+
+class SnrTag : public Tag
+{
+public:
+  static TypeId GetTypeId (void);
+  virtual TypeId GetInstanceTypeId (void) const;
+
+  /**
+   * Create a SnrTag with the default snr 0 
+   */
+  SnrTag();
+
+  /**
+   * Create a SnrTag with the given snr value
+   */
+  SnrTag(double snr);
+
+  virtual uint32_t GetSerializedSize (void) const;
+  virtual void Serialize (TagBuffer i) const;
+  virtual void Deserialize (TagBuffer i);
+  virtual void Print (std::ostream &os) const;
+
+  /**
+   * Set the SNR to the given value.
+   *
+   * @param snr the value of the snr to set
+   */
+  void Set (double snr);
+  double Get (void) const;
+private:
+  double m_snr;
+};
+
+
+}
+#endif /* SNR_TAG_H */