This is merely a historical archive of years 2008-2021, before the migration to mailman3.
A maintained and still updated list archive can be found at https://lists.osmocom.org/hyperkitty/list/UmTRX@lists.osmocom.org/.
Alexander Chemeris alexander.chemeris at gmail.comOn Fri, Dec 7, 2012 at 12:28 PM, Thomas Tsou <tom at tsou.cc> wrote: > On Wed, Dec 5, 2012 at 10:13 PM, Thomas Tsou <tom at tsou.cc> wrote: >> Please try the last commit at >> >> git://github.com/ttsou/openbts-p2.8.git laurent >> >> I tested with 4 samples per symbol as we did in the past. Reducing the >> start/end phase error involved adding bits so that there is no partial >> phase transition to/from nothing. We then zero out the excess bits >> with a simple power mask. > > It turns out that the transmit tester likes this signal, but my > handsets do not; they do not even recognize it. Perhaps this form of > testing is not as reliable as I thought. > > So I reverted the commit to handle start/end phase errors. I also > setup the correlators with single pulse (I see no benefit for the more > complicated modulator on receive), and set timing for 4sps. I receive > RA and normal bursts fine. The start/end transients will need to be > handled a different way. Ok, we've tested 'laurent' branch and it works great for both Rx and Tx, thanks! Have you had any success with fixing ramp up / ramp down issue? -- Regards, Alexander Chemeris. CEO, Fairwaves LLC / ООО УмРадио http://fairwaves.ru