From: Luis Arnaiz <larnaiz@tl...> - 2006-09-18 10:28:25
I was trying to measure the bandwith of 802.11b using Madwifi driver
(with iperf) and found that the throughput was around 7.4 Mbps. Working
with other driver (orinoco) I get around 6Mbps bandwith. I don't know
what the reason is. Having a look to the source code of Madwifi, I
supose that the short preamble is used on the first case and long one on
the latest (orinoco). It is suposed to be one of the reasons of this
behaviour but seems to be too big difference in throughput, isn't it?
Are there any other reasons that can explain this difference? Thanks in
From: Alfred Arnold <alfred@cc...> - 2006-09-19 06:10:40
>It is suposed to be one of the reasons of this
>behaviour but seems to be too big difference in throughput, isn't it?
That explains the difference very well. The long preamble eats up a
significant part of the medium bandwidth at 11 Mbps. See
especially the 'Data Throughput' figures.
Alfred Arnold E-Mail: alfred@...
Computer Club at the http://john.ccac.rwth-aachen.de:8000/alf/
Technical University Phone: +49-241-406526
of Aachen Fax: +49-241-406527