[ns] changing antenna range in NS-2.

[Tiago Junqueira]

Hi,

 I don't know if you're just talking about changing the distance, in
order to do it you just have to  increase the transmitted power Pt_
and check the variable distCST_:

#To have 240m,using freespace
set opt(prop)           Propagation/FreeSpace   ;# radio-propagation model
#(...)
Antenna/OmniAntenna set X_ 0
Antenna/OmniAntenna set Y_ 0
Antenna/OmniAntenna set Z_ 1.5
Antenna/OmniAntenna set Gt_ 1.0  ;#be aware the Gt_ and Gr_ are setted as the
Antenna/OmniAntenna set Gr_ 1.0  ;#fixed value 1.0
Phy/WirelessPhy set freq_ 2.4e9
Phy/WirelessPhy set L_ 1.0
Phy/WirelessPhy set Pt_ 1.838e-5  ;#power needed to have 240m of distance
Phy/WirelessPhy set RXThresh_ 3.16e-14
Phy/WirelessPhy set CSThresh_ 3.16e-14   ;#Sensivity=-105 dbm
Phy/WirelessPhy set CPThresh_ 10

output:highestAntennaZ_ = 1.5,  distCST_ = 239.9

To increase distance higher than that increase Phy/WirelessPhy set Pt_ ,
distCST_ will go above 240m.


I don't know but the article "Simulate 802.11b Channel within NS2"
might be useful for you (you can search it on google).


kindly, Tiago Junqueira