On Thu, Nov 07, 2013 at 09:59:15AM -0500, Aditya Dhananjay wrote: > Yes, I am using the current version pulled from the git sources. > > To clarify, this is not a rare occurrence. With a > 50% probability, when I > reduce the TX/RX gain, the problem shows up. The header/payload demux is > always > the offending block. > > Also, once this problem shows up, the entire RX path freezes up, and needs to > be restarted.
Hey guys, and thanks again for testing this. I ran some tests today and was able to reproduce this problem. However, to make it happen, you have to severely screw up the OFDM signal at the transmit side. The preamble detector (which is pretty robust) will still detect packets, and then flood the header/payload demuxer with guaranteed garbage. Eventually, even the 8-Bit CRC fails, after rejecting lots of packets. At this point, the HPD *should* catch the problem, but doesn't, which causes the block_executor to throw a runtime_error. I'm not sure where the bug is, but there definitely is one. I've opened http://gnuradio.org/redmine/issues/611 and will try and figure this out. 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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