Hi Alex,
you may want to take a look at the OOT module gr-cdma (
https://github.com/anastas/gr-cdma).
This system implements a two-channel system with one of the orthogonal
channels being continuously transmitting pilots,
while the other carries data (in a synchronous/asynchronous way).
The Rx is
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
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
