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pathloss example and text

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ahrenholz@gmail.com 2013-04-17 15:57:05 +00:00
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@ -22,5 +22,18 @@ The fields for GPS location events are: _time, NEM ID, "location", "gps", latitu
== Cartesian coordinates ==
= EEL pathloss events =
A pathloss event specifies the pathloss in decibels.
When used with EMANE's Universal PHY, you would set the _pathloss mode_ to _*pathloss*_.
A pathloss event specifies the pathloss in decibels (dB).
When used with EMANE's Universal PHY, you would set the _pathloss mode_ to _*pathloss*_. When pathloss mode is used, the location of a node no longer determines connectivity.
A packet received in EMANE has the following received power calculation, that determines whether or not the packet will be dropped:
_Rx Power (dBm) = Tx Power (dBm) + Tx Antenna Gain (dBi) + Rx Antenna Gain (dBi) - *Pathloss (dB)*_
The fields for pathloss events are: _time, source NEM ID, "pathloss", destination NEM ID,pathloss-value_.
Multiple destination NEM IDs may be specified. The example below shows three NEMs, with each line specifying two destination NEMs. Note that loss can be asymmetrical.
{{{
0.0 nem:1 pathloss nem:2,96.3 nem:3,95.0
0.0 nem:2 pathloss nem:1,94.2 nem:3,96.1
0.0 nem:3 pathloss nem:2,94.9 nem:3,96.3
}}}