[Ns-developers] Numerical values of the attributes inYansWifiPhy::GetTypeId

Ruben Merz ruben at net.t-labs.tu-berlin.de
Tue Feb 24 10:39:42 PST 2009


Hagen,

It looks like my question was not clear enough. I know what those
parameters represent. My question is whether any of them had been validated.


[snip]
> 
> 
> 
> TxPowerEnd: 16.0206 dBm
> 
> RxPowerEnd: 16.0206 dBm
> 
> 
> 
> 16.0206 dBm are 40mW. 40mW are ETSI standard for 802.11. 50mW

And it's different for FCC.

Best
Ruben


> is also possible for some countries. So it looks fine for
> 
> 802.11a - for 802.11g you can raise this up to 20 dBm (for europe).
> 
> 
> 
> EnergyDetectionThreshold: -140dBm
> 
> CcaMode1Threshold: -140.0 dBm
> 
> 
> 
> Should the sensitive enough to get catch enough information.
> 
> Think about asymmetric links, et cetera. This value is used for
> 
> SINR calculation.
> 
> 
> 
> RxNoise: 7dB
> 
> 
> 
> An additional gain to smooth the reception. The term noise
> 
> is a little bit misleading here. RxLost may be a better name -
> 
> it points misleading that it models channel lost characteristics.
> 
> 
> 
> TxGain: 1 dB
> 
> RxGain: 1 dB
> 
> 
> 
> TxGain/RxGain models a non-isotrope antenna. This value is too
> 
> small to have any far-reaching influences.
> 
> 
> 
> 
> 
> Best regards, Hagen
> 
> 
> 
> 
> 

-- 
Ruben Merz                   Deutsche Telekom Laboratories
http://www.net.t-labs.tu-berlin.de/people/ruben_merz.shtml


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