[ns] Transmission Range in WirelessPhyExt

2009-12-13 Thread Alexander Adrowitzer
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

[ns] A problem about the wireless multicast in ns2

2009-12-13 Thread dan miao
Hello I am having a problem while I am trying to simulate multicast over a wireless network (802.11). The error I get is the following. It would be great if you could let me know what I am doing wrong The error I get is: ... ns: _o22 new-group 0 -2147483648 -1 cache-miss: can't read

[ns] received threshold

2009-12-13 Thread jeni martin
hi every one,   i have a question about RXThresh_   i know to change the RXThresh_, i should set it in tcl script, but i want to change this set value during simulation, so i try these two steps:   1- in tcl script, i set the value like this: Phy/WirelessPhy set RXThresh_ 3.652e-10   2- in

[ns] accessing parameters of low leves layers

2009-12-13 Thread Atif Sharif
Hi all! My problem involves accessing the parameters of lower layers at transport layer. I already accessed the public parameters but unable to access the private ones.  Any idea? Cheers

Re: [ns] Transmission Range in WirelessPhyExt

2009-12-13 Thread Remi Vannier
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

[ns] Change trace file during simulation

2009-12-13 Thread ahmed ibrahim
Hi all, This is my first message on this mailing list. The trace file generated in my simulation is huge and I decided to parse it using awk during the simulation and delete it from time to time. I managed to run awk on the file, but the problem is that I can't change the trace file of the

[ns] Invitation to connect on LinkedIn

2009-12-13 Thread Dr. Sabu M Thampi
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[ns] CFP HPCS2010 FRANCE

2009-12-13 Thread SABU M. THAMPI
Call for Participation The 2010 High Performance Computing Simulation Conference (HPCS 2010) In Conjunction With The International Wireless Communications and Mobile Computing Conference (IWCMC 2010) Caen, Normandy, France June 28 - July 2, 2010

[ns] is it possible to simulate two wifi network together in ns2?

2009-12-13 Thread preeti nimonkar
hello all can any body tell me is it possible to simulate two wireless LAN together in ns2 operating at different frequency.