Re: [Discuss-gnuradio] Transmit time synchronization

[Muhammad Shahmeer Omar]

Thanks Marcus!

Is it possible to synchronize the usrps using individual gpsdo modules for each board or is a central distribution system (like the octoclock) necessary?

Hello Muhammad Shahmeer Omar,

with neither an external signal or a GPSDO, this is physically impossible.

I think with external signal you mean the PPS signal; you can of course use a reference signal and build synchronization in software. That is a problem equivalent to synchronization in communication systems, e.g. synchronization of mobile phones to a base station.

Best regards,
Marcus Müller

On 12/07/2014 04:09 PM, Muhammad Shahmeer Omar wrote:

Hello all,

Ive been trying to achieve transmit time synchronization for over a month
now using GNURadio and USRP B200, and so far i have had limited success. I
could not find alot online. My question is simple. Is it possible to
achieve synchronization between two USRPs without using an external signal
or the GPSDO?

If so a little guidance would be much appreciated. Thanks.

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