More realistic wireless communication channel with fading can be configured using the Nakagami RF model. It is mostly used in VANET signal propagation model.
| set val(chan) | Channel/WirelessChannel | ;# channel type |
| set val(prop) | Propagation/Nakagami | ;# radio-propagation model |
| set val(netif) | Phy/WirelessPhyExt | ;# network interface type |
| set val(mac) | Mac/802_11Ext | ;# MAC type |
| set val(ifq) | Queue/DropTail/PriQueue | ;# interface queue type |
| set val(ll) | LL | ;# link layer type |
| set val(ant) | Antenna/OmniAntenna | ;# antenna model |
| set val(ifqlen) | 50 | ;# max packet in ifq |
| set val(nn) | 72 | ;# number of mobilenodes |
| set val(rp) | GPSR | ;# routing protocol |
| set opt(x) | 800 | ;# x coordinate of topology |
| set opt(y) | 750 | ;# y coordinate of topology |
| set stopTime | 35.00 |
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# Main Program
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#vehicles configuration
# 802.11p default parameters
$val(netif) set CSThresh_ 3.9810717055349694e-13 ;# -94 dBm wireless interface sensitivity
$val(netif) set Pt_ 0.0005 ;#equals 20dBm when considering antenna gains of 1.0
$val(netif) set freq_ 5.9e+9
$val(netif) set noise_floor_ 1.26e-13 ;# -99 dBm for 10MHz bandwidth
$val(netif) set L_ 1.0 ;# default radio circuit gain/loss
$val(netif) set PowerMonitorThresh_ 3.981071705534985e-18 ;# -174 dBm power monitor sensitivity (=level of gaussian noise)
$val(netif) set HeaderDuration_ 0.000040 ;# 40 us
$val(netif) set BasicModulationScheme_ 0
$val(netif) set PreambleCaptureSwitch_ 1
$val(netif) set DataCaptureSwitch_ 1
$val(netif) set SINR_PreambleCapture_ 3.1623; ;# 5 dB
$val(netif) set SINR_DataCapture_ 10.0; ;# 10 dB
$val(netif) set trace_dist_ 1e6 ;# PHY trace until distance of 1 Mio. km ("infinity")
$val(netif) set PHY_DBG_ 0
$val(mac) set CWMin_ 15
$val(mac) set CWMax_ 1023
$val(mac) set SlotTime_ 0.000013
$val(mac) set SIFS_ 0.000032
$val(mac) set ShortRetryLimit_ 7
$val(mac) set LongRetryLimit_ 4
$val(mac) set HeaderDuration_ 0.000040
$val(mac) set SymbolDuration_ 0.000008
$val(mac) set BasicModulationScheme_ 0
$val(mac) set use_802_11a_flag_ true
$val(mac) set RTSThreshold_ 2346
$val(mac) set MAC_DBG 0
Propagation/Nakagami set gamma0_ 1.9
Propagation/Nakagami set gamma1_ 3.8
Propagation/Nakagami set gamma2_ 3.8
Propagation/Nakagami set d0_gamma_ 200
Propagation/Nakagami set d1_gamma_ 500
Propagation/Nakagami set use_nakagami_dist_ false
Propagation/Nakagami set m0_ 1.5
Propagation/Nakagami set m1_ 0.75
Propagation/Nakagami set m2_ 0.75
Propagation/Nakagami set d0_m_ 80
Propagation/Nakagami set d1_m_ 200