Hi, 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 be realistic.
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. Remi Alexander Adrowitzer a écrit : > Hi all, > I have some troubles in setting the transmission range in WirelessPhyExt > (ns-2.34). > 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? > > Thanks > Alexander Adrowitzer > >
