From 2340df18f88132f2e8603ed2138e27429b7d2007 Mon Sep 17 00:00:00 2001
From: Davide Magrin <magrin.davide@gmail.com>
Date: Fri, 5 Mar 2021 15:12:27 +0100
Subject: [PATCH] Fix aloha collision matrix

---
 model/lora-interference-helper.cc | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/model/lora-interference-helper.cc b/model/lora-interference-helper.cc
index e67485ae07..ce43e49262 100644
--- a/model/lora-interference-helper.cc
+++ b/model/lora-interference-helper.cc
@@ -115,15 +115,14 @@ operator<< (std::ostream &os, const LoraInterferenceHelper::Event &event)
 // This collision matrix can be used for comparisons with the performance of Aloha
 // systems, where collisions imply the loss of both packets.
 double inf = std::numeric_limits<double>::max ();
-double minf = std::numeric_limits<double>::min ();
-  std::vector<std::vector<double>> LoraInterferenceHelper::collisionSnirAloha= {
+std::vector<std::vector<double>> LoraInterferenceHelper::collisionSnirAloha= {
     //   7   8   9  10  11  12
-    {inf, minf, minf, minf, minf, minf}, // SF7
-    {minf, inf, minf, minf, minf, minf}, // SF8
-    {minf, minf, inf, minf, minf, minf}, // SF9
-    {minf, minf, minf, inf, minf, minf}, // SF10
-    {minf, minf, minf, minf, inf, minf}, // SF11
-    {minf, minf, minf, minf, minf, inf} // SF12
+    {inf, -inf, -inf, -inf, -inf, -inf}, // SF7
+    {-inf, inf, -inf, -inf, -inf, -inf}, // SF8
+    {-inf, -inf, inf, -inf, -inf, -inf}, // SF9
+    {-inf, -inf, -inf, inf, -inf, -inf}, // SF10
+    {-inf, -inf, -inf, -inf, inf, -inf}, // SF11
+    {-inf, -inf, -inf, -inf, -inf, inf} // SF12
 };
 
 // LoRa Collision Matrix (Goursaud)