[ns] Packet error rate

2006-01-04 Thread Adam Hunt
Hi, Does anyone know if there is a relationship between the length of a wired link and the packet error rate? Is there a formula? I wish to use it in an Error Model to find throughputs over different distances. Thanks, Adam _ Ar

[ns] Wired network losses

2006-01-04 Thread Adam Hunt
Dear ns users, I am looking at general relationships between the various parameters in a wired network and have got some unexpected results. It seems that there is no real loss in available throughput when the transmission distance is increased. However, mathematical equations show significant

[ns] 802.11 transmitting power

2005-12-29 Thread Adam Hunt
Dear all, I am modelling a wireless network and was wondering if introducing ad hoc communication would reduce the power needed for transmission from the mobile nodes. For example, if a mobile node is 20m from a base station would there be a significant power saving by transmitting through ano

[ns] distCST_ size

2005-12-21 Thread Adam Hunt
Dear all, I am working with a simple wireless model and have a query about the distCST_ value that is displayed when the file is run. Using TwoRayGround propagation it is 550. This makes sense. But using shadowing propagation the number is huge (about 300 digits before the decimal point!). How

[ns] 802.11 throughput doesn't vary with distance?

2005-12-18 Thread Adam Hunt
Dear all, I am building a simple wireless network model using 802.11. However, I seem to be observing the same throughputs whether the separation between a wireless node and base station is 2m or 100m. I have found how to set the transmission range, but there is still no reduction in throughpu