AW: Latency Management in GnuRadio with Hardware Buffers

[Nieland, Michael]

Hi Eugene, 

thanks for the insight! I will certainly try this approach. 

Regards 

Michael

>-----Ursprüngliche Nachricht-----
>Von: Eugene Grayver <egrayver@yahoo.com>
>Gesendet: Mittwoch, 24. November 2021 07:51
>An: Nieland, Michael <michael.nieland@iis.fraunhofer.de>
>Cc: discuss-gnuradio@gnu.org
>Betreff: Latency Management in GnuRadio with Hardware Buffers
>
>We have achieved latency on the order of hundreds of microseconds. The
>trick is to use the start time on TX and RX of the USRP at exactly the same
>time. You then need a block that outputs one sample for every input sample.
>This prevents the transmit path from filling up the hardware buffer. Note that
>you do need a few samples to avoid underflow‘s. A simple solution is to insert
>a delay Block after the block that matches in to out samples.
>
>You should also make sure to set the maximum output buffer size to a small
>value, which you are already doing.