diff --git a/src/lte/examples/execution-time-reference.cc b/src/lte/examples/execution-time-reference.cc
new file mode 100644
index 000000000..21f143e4d
--- /dev/null
+++ b/src/lte/examples/execution-time-reference.cc
@@ -0,0 +1,128 @@
+/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2011 Centre Tecnologic de Telecomunicacions de Catalunya (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: Jaume Nin <jnin@cttc.es>
+ */
+
+
+#include "ns3/core-module.h"
+#include "ns3/network-module.h"
+#include "ns3/mobility-module.h"
+#include "ns3/lte-module.h"
+#include "ns3/config-store.h"
+//#include "ns3/gtk-config-store.h"
+
+#include <iomanip>
+#include <string>
+#include <vector>
+
+using namespace ns3;
+using std::vector;
+
+int main (int argc, char *argv[])
+{
+  double radius = 0.0;
+  uint32_t nEnb = 1;
+  uint32_t nUe  = 1;
+  CommandLine cmd;
+
+  cmd.AddValue ("nEnb", "Number of eNodeBs", nEnb);
+  cmd.AddValue ("nUe", "Number of UEs", nUe);
+  cmd.AddValue ("radius", "the radius of the disc where UEs are placed around an eNB", radius);
+  cmd.Parse (argc, argv);
+  
+  ConfigStore inputConfig;
+  inputConfig.ConfigureDefaults ();
+
+  // parse again so you can override default values from the command line
+  cmd.Parse (argc, argv);
+  
+  // determine the string tag that identifies this simulation run
+  // this tag is then appended to all filenames
+
+  IntegerValue runValue;
+  GlobalValue::GetValueByName ("RngRun", runValue);
+
+//  std::ostringstream tag;
+/*  tag  << "_enbDist" << std::setw(3) << std::setfill ('0') << std::fixed << std::setprecision (0) << enbDist
+       << "_radius"  << std::setw(3) << std::setfill ('0') << std::fixed << std::setprecision (0) << radius
+       << "_nUe"  << std::setw(3) << std::setfill('0')  << nUe
+       << "_rngRun"  << std::setw(3) << std::setfill('0')  << runValue.Get () ;
+*/
+  Ptr<LenaHelper> lena = CreateObject<LenaHelper> ();
+  
+  // Create Nodes: eNodeB and UE
+  NodeContainer enbNodes;
+  vector<NodeContainer> ueNodes;
+
+  enbNodes.Create (nEnb);
+  for (uint32_t i = 0; i < nEnb; i++)
+    {
+      NodeContainer ueNode;
+      ueNode.Create (nUe);
+      ueNodes.push_back(ueNode);
+    }
+
+  // Position of eNBs  
+  Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator> ();
+  positionAlloc->Add (Vector (0.0, 0.0, 0.0));
+  MobilityHelper enbMobility;
+  enbMobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
+  enbMobility.SetPositionAllocator (positionAlloc);
+  enbMobility.Install (enbNodes);
+
+  // Position of UEs attached to eN
+  MobilityHelper ueMobility;
+  ueMobility.SetPositionAllocator ("ns3::UniformDiscPositionAllocator",
+                                    "X", DoubleValue (0.0),
+                                    "Y", DoubleValue (0.0),
+                                    "rho", DoubleValue (radius));
+  ueMobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
+  for (uint32_t i = 0; i < nEnb; i++)
+    {
+      ueMobility.Install (ueNodes[i]);
+    }
+
+
+  // Create Devices and install them in the Nodes (eNB and UE)
+  NetDeviceContainer enbDevs;
+  vector<NetDeviceContainer> ueDevs;
+  //NetDeviceContainer ueDevs2;
+  enbDevs = lena->InstallEnbDevice (enbNodes);
+  for (uint32_t i = 0; i < nEnb; i++)
+    {
+      NetDeviceContainer ueDev = lena->InstallUeDevice (ueNodes[i]);
+      ueDevs.push_back (ueDev);
+      lena->Attach (ueDev, enbDevs.Get (i));
+      enum EpsBearer::Qci q = EpsBearer::GBR_CONV_VOICE;
+      EpsBearer bearer (q);
+      lena->ActivateEpsBearer (ueDev, bearer);
+
+
+    }
+
+  Simulator::Stop (Seconds (60));
+  //lena->EnableRlcTraces ();
+
+  Simulator::Run ();
+
+  /*GtkConfigStore config;
+  config.ConfigureAttributes ();*/
+
+  Simulator::Destroy ();
+  return 0;
+}
diff --git a/src/lte/examples/wscript b/src/lte/examples/wscript
index ac89e1b17..d73403add 100644
--- a/src/lte/examples/wscript
+++ b/src/lte/examples/wscript
@@ -10,3 +10,6 @@ def build(bld):
     obj = bld.create_ns3_program('lena-rlc-calculator',
                                  ['lte'])
     obj.source = 'lena-rlc-calculator.cc'    
+    obj = bld.create_ns3_program('execution-time-reference',
+                                 ['lte'])
+    obj.source = 'execution-time-reference.cc'
diff --git a/src/lte/model/lte-spectrum-value-helper.cc b/src/lte/model/lte-spectrum-value-helper.cc
index 7e2b3b8da..94bf65320 100644
--- a/src/lte/model/lte-spectrum-value-helper.cc
+++ b/src/lte/model/lte-spectrum-value-helper.cc
@@ -19,10 +19,12 @@
  *         Nicola Baldo <nbaldo@cttc.es>
  */
 
-#include<map>
+#include <map>
 #include <cmath>
 
 #include <ns3/log.h>
+#include <ns3/fatal-error.h>
+
 #include "lte-spectrum-value-helper.h"
 
 NS_LOG_COMPONENT_DEFINE ("LteSpectrumValueHelper");