On May 13, 2004, at 3:33 PM, ericblack wrote:
http://www.wi-fiplanet.com/news/article.php/3352561
Now, aren't two-way 802.11a/b/g links unreliable above 30 km per hr? From
what I recall when I used to work at Intersil (once Harris Semiconductor,
then Globespan-virata, now Conexant), radios built to the 802.11 standard
were never intended to work at high velocities. Can the folks who have
war-driving and war-flying experience shed any light on this 802.11 in the
Car press release from Atheros? Eric
A long time ago I calculated the doppler shift issues with a car moving straight towards (or away from) a base station, and posted something on BAWUG. Of the top of my head, the problem is worse at lower frequencies (2.4 is more affected than 5.8), and DSSS has more problems with doppler shift than OFDM.
Maybe Atheros has a better frequency estimation circuit than most. Who can tell?
Jim
