On Mon, Feb 27, 2012 at 12:12:52PM -0800, justynnuff wrote: > The Problem: Although I can see the GMSK signal on the Rx end off of the > USRP, nothing is produced at the output of the packet decoder. The BT param > on the GMSK mod block is ~1, the samples per symbol is 8, and almost > everything else is default. Is there something I'm missing, or does this > block just not work in an over-the-air scenario?
Hi justynnuff, it should work (and I've tried it). I don't have a setup right here, so I can't give you a working example, but here's some input: - I definitely used different params (probably bt=.3 and sps=2), although I don't know off the top of my head if that could cause trouble. - The standard sync was a bit flaky (e.g. I never got it working on GSM bursts). I had to tune pretty precisely to start with, and then timing sync using the M&M didn't work out that well. It does, however, work with the benchmark_* examples, which you should definitely read (if you haven't done so). It's probably just a matter of setting the sync params correctly. MB -- Karlsruhe Institute of Technology (KIT) Communications Engineering Lab (CEL) Dipl.-Ing. Martin Braun Research Associate Kaiserstraße 12 Building 05.01 76131 Karlsruhe Phone: +49 721 608-43790 Fax: +49 721 608-46071 www.cel.kit.edu KIT -- University of the State of Baden-Württemberg and National Laboratory of the Helmholtz Association
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