From: Matthias Wachs <wachs@net.in.tum.de>
Date: Wed, 29 Sep 2010 09:19:00 +0000 (+0000)
Subject: Added note about converting dBm to power P
X-Git-Tag: initial-import-from-subversion-38251~20245
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=b6209c0f7e4184975aaeafb9c5bb4d186e466572;p=oweals%2Fgnunet.git

Added note about converting dBm to power P
---

diff --git a/src/transport/transport_selection.h b/src/transport/transport_selection.h
index 8bc810f84..7a98e68a3 100644
--- a/src/transport/transport_selection.h
+++ b/src/transport/transport_selection.h
@@ -92,6 +92,12 @@ enum GNUNET_ATS_Cost_Type
 	 * Power P in Watt (J/s)
 	 * Datarate D in MBit/s
 	 *
+	 * Conversion of dBm to Power P used by WLAN:
+	 *
+	 * Lp(dbm) = 10 log10 (P/ 1mW)
+	 *
+	 * => P = 1 mW  * 10^(Lp(dbm)/10)
+	 *
 	 * Unit: [mJ/MB]
 	 *
 	 * Interpretation: less is better