[ns] Wireless LAN throughput

[Przemek Machan]

Hi,
did you use rts/cts mechanizm? Check MAC_RTSThreshold in mac-802_11.h.
Przemek


----- Original Message ----- 
From: "Chetan Kumar" <chetan at protocol.ece.iisc.ernet.in>
To: <ns-users at ISI.EDU>
Sent: Saturday, January 17, 2004 6:12 PM
Subject: [ns] Wireless LAN throughput


> 
> 
> Hi All,
> I did couple of experiment on a two node ad-hoc network to
> calculate the wirelesslan throughput (the nodes are 5 meters apart). Here
> are the results:
> 
> Mac/802_11 set dataRate_ 11e6
> Throughput seen 3.6 MBPS
> 
> Mac/802_11 set dataRate_ 2e6
> Throughput seen 1.47 MBPS
> 
> Mac/802_11 set dataRate_ 1e6
> Throughput seen 900 Kbps
> 
> So I am getting 90% at 1 mbps, 73% at 2 mbps and 32% at 11 mbps
> 
> Now question is that at 11mbps, the throughput achieved is much less then
> the theoretical throughput achievable (including the overhead), which is
> around 60%. Does someone know what is the reason for this.
> 
> Parameters:
> Phy/WirelessPhy set CPThresh_ 10.0
> Phy/WirelessPhy set CSThresh_ 5.011872e-12
> Phy/WirelessPhy set RXThresh_ 1.15209e-10
> Phy/WirelessPhy set Pt_ 0.031622777
> Phy/WirelessPhy set freq_ 2457e+6
> 
> Traffic Type:
> Application/Traffic/CBR
> $cbr_($i) set packetSize_ 1000
> $cbr_($i) set rate_ 11m
> 
> 
> 
> 
> 
> 
> 
>