osmo-trx[master]: WIP:sigProcLib: Reduce burst detection window for NB.

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Tom Tsou gerrit-no-reply at lists.osmocom.org
Tue May 30 19:09:06 UTC 2017


Patch Set 1:

> Tom, could you explain why did you set search window to -/+6
 > symbols? My experiments showed that at least `tail` should be set
 > to 3 in order for `max_toa` to actually represent maximum TOA. And
 > same for `head` - from my experiments I think it should be 3.

Previous pre-search or 'head' settings on normal have come from experimentation.

In number of symbols:

5 - Original OpenBTS / Range Networks
4 - Reduced during filter & SSE rewrite
6 - Expanded in e90c24c8 to account for timestamp jitter in certain configurations

With 3 symbols, have you checked TSC timing stability in the 4/1 sps mode where jitter is/was most severe?

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Gerrit-MessageType: comment
Gerrit-Change-Id: If3cb40d2311504a13c03e1fbccad663ac201d9a4
Gerrit-PatchSet: 1
Gerrit-Project: osmo-trx
Gerrit-Branch: master
Gerrit-Owner: Alexander Chemeris <Alexander.Chemeris at gmail.com>
Gerrit-Reviewer: Alexander Chemeris <Alexander.Chemeris at gmail.com>
Gerrit-Reviewer: Harald Welte <laforge at gnumonks.org>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: Tom Tsou <tom at tsou.cc>
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