[PATCH] WLAN: --power maxperf shot into the dark

Werner Almesberger werner at openmoko.org
Tue Jan 27 22:50:52 CET 2009

John Sullivan wrote:
> It isn't, but I did also try on channels 2 and 3 with the same results.

Okay. Channels 2 and 3 still overlap with channel 1, but there should
already be a marked improvement when you increase the frequency
difference. For best separation, try having at least two unused channels
between other strong stations and yours. E.g., if there's someone at
channel 1, try channel 4 or higher.

This isn't only what everyone tells you to do, but I even have experimental
evidence with the AR6k ;-) The first channel hopping test showed anomalies
that occurred as a function of channel overlap:

There were a lot of them if the channels were directly adjacent or had
only one empty channel between them, but dropped off as the separation

Again, channel overlap is not a bug of the AR6k but a design limitation
of 802.11 DS networks in general.

> Thanks for the info and suggestions for things to test, more to follow.

Thanks a lot ! 

- Werner

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