[ns] Transmission Range in WirelessPhyExt
remi.vannier at ens-lyon.fr
Sun Dec 13 05:16:48 PST 2009
In WirelessPhyExt, a reception depends on the SINR level at the
receiver, instead of a simple Rx_threshold. So Pt is a factor, but the
noise level as well. Also, I think that no message may be received if
its power is below the carrier sense threshold. If I remember my own
experiments correctly, any message with enough power to be detected
could be decoded if there were no interferences, which may, or may not
I have no clue about how to find realistic values for these parameters.
Please tell me if you find anything about this.
You will find all 802.11Ext parameters in tcl/lib/ns-defaults.tcl.
Alexander Adrowitzer a écrit :
> Hi all,
> I have some troubles in setting the transmission range in WirelessPhyExt
> I tested the examples with IEEE 802.11a and 802.11p and found (by
> simulaiton) a transmission range of 163m and 202m respectively.
> Changing the value of Pt_ does change the transmission range, but not in
> a "predictable" way. I use TwoRayGround model btw.
> Does anybody know how to calculate transmission range in WirelessPhyExt?
> Alexander Adrowitzer
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