From: Johannes Berg <johannes-cdvu00un1VgdHxzADdlk8Q@public.gmane.org>
To: Simon Barber <simon-vp0mx6+5gkqFX2APIN6yfw@public.gmane.org>
Cc: Thomas Pedersen <thomas-W/OLz77bvjtBDgjK7y7TUQ@public.gmane.org>,
"radiotap-sUITvd46vNxg9hUCZPvPmw@public.gmane.org"
<radiotap-sUITvd46vNxg9hUCZPvPmw@public.gmane.org>
Subject: Re: TSFT
Date: Sun, 18 Nov 2012 12:07:25 +0100 [thread overview]
Message-ID: <1353236845.9649.6.camel@jlt4.sipsolutions.net> (raw)
In-Reply-To: <50A88C3D.5030809-vp0mx6+5gkqFX2APIN6yfw@public.gmane.org>
On Sat, 2012-11-17 at 23:20 -0800, Simon Barber wrote:
> Unfortunately this patch does not do a very accurate calculation, so it
> makes the problem worse. It simply multiplies rate by the number of
> bits to get a time. This does not take into account the limited
> accuracy in rate (11n has fractional rates), nor does it consider the
> rounding into blocks caused by FEC, or symbols. As a result the data is
> made worse by the current code. Either the code should do an accurate
> fix, or it should record the raw value and let the end user correct it
> properly.
If we can, I'd say we should fix the calculations.
The question is how we define it when the first bit of the MPDU can be
fractional in a symbol?
johannes
next prev parent reply other threads:[~2012-11-18 11:07 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-17 6:26 TSFT Simon Barber
[not found] ` <50A72E17.6070207-vp0mx6+5gkqFX2APIN6yfw@public.gmane.org>
2012-11-17 6:48 ` TSFT David Young
[not found] ` <20121117064848.GO21779-Gq8g4XVd89tWk0Htik3J/w@public.gmane.org>
2012-11-17 8:45 ` TSFT Johannes Berg
[not found] ` <1353141950.9543.3.camel-8Nb76shvtaUJvtFkdXX2HixXY32XiHfO@public.gmane.org>
2012-11-17 17:46 ` TSFT David Young
[not found] ` <20121117174600.GQ21779-Gq8g4XVd89tWk0Htik3J/w@public.gmane.org>
2012-11-17 18:43 ` TSFT Johannes Berg
2012-11-17 18:56 ` TSFT Guy Harris
2012-11-17 23:26 ` TSFT Thomas Pedersen
2012-11-18 7:20 ` TSFT Simon Barber
[not found] ` <50A88C3D.5030809-vp0mx6+5gkqFX2APIN6yfw@public.gmane.org>
2012-11-18 11:07 ` Johannes Berg [this message]
[not found] ` <1353236845.9649.6.camel-8Nb76shvtaUJvtFkdXX2HixXY32XiHfO@public.gmane.org>
2012-11-20 22:43 ` TSFT Simon Barber
[not found] ` <50AC0791.3040005-vp0mx6+5gkqFX2APIN6yfw@public.gmane.org>
2012-11-21 10:42 ` TSFT Johannes Berg
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