I'm using the 802.11p parameters given at
http://dsn.tm.uni-karlsruhe.de/Overhaul_NS-2.php for my wireless simulations
the parameters are as follows
# 802.11p default parameters
Phy/WirelessPhyExt set CSThresh_ 3.9810717055349694e-13 ;#
-94 dBm wireless interface sensitivity
Phy/WirelessPhyExt set Pt_ 0.1 ;# equals
20dBm when considering antenna gains of 1.0
Phy/WirelessPhyExt set freq_ 5.9e+9
Phy/WirelessPhyExt set noise_floor_ 1.26e-13 ;# -99
dBm for 10MHz bandwidth
Phy/WirelessPhyExt set L_ 1.0 ;#
default radio circuit gain/loss
Phy/WirelessPhyExt set PowerMonitorThresh_ 3.981071705534985e-18 ;#
-174 dBm power monitor sensitivity (=level of gaussian noise)
Phy/WirelessPhyExt set HeaderDuration_ 0.000040 ;# 40 us
Phy/WirelessPhyExt set BasicModulationScheme_ 0
Phy/WirelessPhyExt set PreambleCaptureSwitch_ 1
Phy/WirelessPhyExt set DataCaptureSwitch_ 1
Phy/WirelessPhyExt set SINR_PreambleCapture_ 3.1623; ;# 5 dB
Phy/WirelessPhyExt set SINR_DataCapture_ 10.0; ;# 10 dB
Phy/WirelessPhyExt set trace_dist_ 1e6 ;# PHY
trace until distance of 1 Mio. km ("infinity")
Phy/WirelessPhyExt set PHY_DBG_ 0
Mac/802_11Ext set CWMin_ 15
Mac/802_11Ext set CWMax_ 1023
Mac/802_11Ext set SlotTime_ 0.000013
Mac/802_11Ext set SIFS_ 0.000032
Mac/802_11Ext set ShortRetryLimit_ 7
Mac/802_11Ext set LongRetryLimit_ 4
Mac/802_11Ext set HeaderDuration_ 0.000040
Mac/802_11Ext set SymbolDuration_ 0.000008
Mac/802_11Ext set BasicModulationScheme_ 0
Mac/802_11Ext set use_802_11a_flag_ true
Mac/802_11Ext set RTSThreshold_ 2346
Mac/802_11Ext set MAC_DBG 0
I understand that in order to set the transmission range I need to modify
the value of Pt_ , whose default value is given 0.1 above.
What does this value say? What the transmission range of 802.11p by default?
I want to set the transmission range of my 802.11p node to 350 meters. What
value should I put in Pt_ ?
Do I need to change any other variable as well? Some solutions suggest to
modify RxThresh value as well. This value, however, is not present in the
above 802.11p parameters.
Also how can I set the data rate, e.g. to 2mbps?
--
"Talent does what it can; genius does what it must."
--
Best Regards,
Imran Khan
MS Multimedia & Communications
Muhammad Ali Jinnah University
Islamabad, Pakistan
+92300-5397149
