Hello, a question that keeps popping up on the list: is there a way to tag samples within RFNoC such that it can be processed in GNU Radio? In earlier discussions, the EOB bit was suggested for such purposes: http://lists.ettus.com/pipermail/usrp-users_lists.ettus.com/2016-June/020733.html But I'm not sure the EOB can be used in the *receive* direction.
Possible use cases include running a frame sync block in the FPGA that should be able to tag the beginning of a frame, or having an FFT-like block or a filter bank in the FPGA in which case the respective first samples of every block need to be recognized within GNU Radio. Possibly in a robust manner such that loss of samples does not lead to catastrophic desynchronization. Is there a good way to accomplish this kind of tagging? Best regards, Peter
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