Hi Alex - The default OFDM Rx is fully asynchronous: It tries to detect the packet preamble on a packet by packet basis only, without using any knowledge of historical successful packet detection. I don't think GR provides a synchronous receiver, and I don't know of one in any GR out of tree (OOT) module ... but I don't know everything so maybe there is one & if so hopefully others will chime in to tell us! Hope this is useful! - MLD
On Tue, Aug 13, 2019, at 1:04 PM, Alex Roberts wrote: > I'm playing around with an OFDM transmit/receive chain. I've noticed that if > I get underruns at a high enough rate, it becomes a bursty system and the > receiver is unable to lock in and no longer demodulates the symbols. > > Would it be possible to generate continuous pilot tones or send OFDM frames > with just preambles and padded data such that even if the source data stream > underruns, the output is continous rather than bursty so that the receiver > can keep lock with time and frequency offests? > > -Alex > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >
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