--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/lte/model/lte-interference.h	Thu Mar 10 18:15:26 2011 +0100
@@ -0,0 +1,135 @@
+/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2009 CTTC
+ *
+ * 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: Nicola Baldo <nbaldo@cttc.es>
+ */
+
+
+#ifndef LTE_INTERFERENCE_H
+#define LTE_INTERFERENCE_H
+
+#include <ns3/object.h>
+#include <ns3/packet.h>
+#include <ns3/nstime.h>
+#include <ns3/spectrum-value.h>
+
+#include <list>
+
+namespace ns3 {
+
+
+
+
+class LteSinrChunkProcessor;
+
+
+
+/**
+ * This class implements a gaussian interference model, i.e., all
+ * incoming signals are added to the total interference.
+ *
+ */
+class LteInterference 
+{
+public:
+  LteInterference ();
+  ~LteInterference ();
+
+  /**
+   * Add a LteSinrChunkProcessor that will use the time-vs-frequency SINR
+   * calculated by this LteInterference instance. Note that all the
+   * added LteSinrChunkProcessors will work in parallel. 
+   *
+   * @param p
+   */
+  void AddSinrChunkProcessor (Ptr<LteSinrChunkProcessor> p);
+
+  /**
+   * notify that the PHY is starting a RX attempt
+   *
+   * @param rxPsd the power spectral density of the signal being RX
+   */
+  void StartRx (Ptr<const SpectrumValue> rxPsd);
+
+
+  /**
+   * notify that the RX attempt has ended. The receiving PHY must call
+   * this method when RX ends or RX is aborted.
+   *
+   */
+  void EndRx ();
+
+
+  /**
+   * notify that a new signal is being perceived in the medium. This
+   * method is to be called for all incoming signal, regardless of
+   * wether they're useful signals or interferers.
+   *
+   * @param spd the power spectral density of the new signal
+   * @param duration the duration of the new signal
+   */
+  void AddSignal (Ptr<const SpectrumValue> spd, const Time duration);
+
+
+  /**
+   *
+   * @param noisePsd the Noise Power Spectral Density in power units
+   * (Watt, Pascal...) per Hz.
+   */
+  void SetNoisePowerSpectralDensity (Ptr<const SpectrumValue> noisePsd);
+
+private:
+  void ConditionallyEvaluateChunk ();
+  void DoAddSignal  (Ptr<const SpectrumValue> spd);
+  void DoSubtractSignal  (Ptr<const SpectrumValue> spd);
+
+
+
+  bool m_receiving;
+
+  Ptr<const SpectrumValue> m_rxSignal; /**< stores the power spectral density of
+                                  * the signal whose RX is being
+                                  * attempted
+                                  */
+
+  Ptr<SpectrumValue> m_allSignals; /**< stores the spectral
+                                    * power density of the sum of incoming signals;
+                                    * does not include noise, includes the SPD of the signal being RX
+                                    */
+
+  Ptr<const SpectrumValue> m_noise;
+
+  Time m_lastChangeTime;     /**< the time of the last change in
+                                m_TotalPower */
+
+  /** all the processor instances that need to be notified whenever
+      a new SINR chunk is calculated */
+  std::list<Ptr<LteSinrChunkProcessor> > m_sinrChunkProcessorList; 
+
+
+
+};
+
+
+
+} // namespace ns3
+
+
+
+
+
+#endif /* LTE_INTERFERENCE_H */