Hi, I am inkyu. I am interested in synchronizing two USRP (each of them connected to a different laptop) using pre-defined signals.
Let's we have USRP A and B. We want to send the signal from USRP A and B which should arrive the destination receiver at the same time. We think of using pre-defined signal (let's say it preamble) before sending data packets from A and B. For example, A sends preamble and B receives it. Then, A sends data packets after "pre-defined time interval A" after it sends preamble. Also, B sends data packets after "pre-defined time interval B" after it receives a preamble from A. Of course, we need to carefully choose pre-defined time interval A and B to satisfy arrival time at the destination. Here are my questions. (1) Is there any related (this kind of synchronization) techniques which are applicable in USRP? (2) Can we measure or predict processing time budget when we running USRP? Thank you, Regards, Inkyu BANG
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