# HG changeset patch
# User cdfreire
# Date 1310564355 -7200
# Node ID c25325ce6381936d52a537d3a631ecf7b975322b
# Parent  d210b6af8fd0e86145c9e30a9c064173cc66d65e
Avoid creating RandomVariables every time the phy receives a packet, now that it's not as efficient.

diff -r d210b6af8fd0 -r c25325ce6381 src/wimax/model/simple-ofdm-wimax-phy.cc
--- a/src/wimax/model/simple-ofdm-wimax-phy.cc	Wed Jul 13 14:45:19 2011 +0200
+++ b/src/wimax/model/simple-ofdm-wimax-phy.cc	Wed Jul 13 15:39:15 2011 +0200
@@ -342,7 +342,6 @@
                                   Ptr<PacketBurst> burst)
 {
 
-  UniformVariable URNG;
   uint8_t drop = 0;
   double Nwb = -114 + m_noiseFigure + 10 * log (GetBandwidth () / 1000000000.0) / 2.303;
   double SNR = rxPower - Nwb;
@@ -351,9 +350,9 @@
   double I1 = record->GetI1 ();
   double I2 = record->GetI2 ();
 
-  double blockErrorRate = URNG.GetValue (I1, I2);
+  double blockErrorRate = m_rng.GetValue (I1, I2);
 
-  double rand = URNG.GetValue (0.0, 1.0);
+  double rand = m_rng.GetValue (0.0, 1.0);
 
   if (rand < blockErrorRate)
     {
diff -r d210b6af8fd0 -r c25325ce6381 src/wimax/model/simple-ofdm-wimax-phy.h
--- a/src/wimax/model/simple-ofdm-wimax-phy.h	Wed Jul 13 14:45:19 2011 +0200
+++ b/src/wimax/model/simple-ofdm-wimax-phy.h	Wed Jul 13 15:39:15 2011 +0200
@@ -27,6 +27,7 @@
 #include "ns3/callback.h"
 #include "ns3/nstime.h"
 #include "ns3/event-id.h"
+#include "ns3/random-variable.h"
 #include "wimax-phy.h"
 #include "bvec.h"
 #include "ns3/snr-to-block-error-rate-manager.h"
@@ -256,6 +257,7 @@
   double m_noiseFigure;
   double m_txGain;
   double m_rxGain;
+  UniformVariable m_rng;
   /**
    * The trace source fired when a packet begins the transmission process on
    * the medium.