Re: USRP X300 Synchronization

[Marcus Müller]

Any OFDM receiver needs a timing recovery method anyways, so that has nothing to do with 
how well your PC is suitable for synchronizing two devices.


On 18.05.23 17:43, Hamed Al-Zubi wrote:
> Thanks for your response, Marcus!
> I have observed a constellation rotation for OFDM subcarriers when I use the PC clock for 
> synchronization. However, by using the channel model, I am able to see the QPSK 
> constellation.
>
> Thanks!
> HZ
>
> On Thursday, May 18, 2023 at 10:35:01 AM CDT, Marcus Müller 
> <marcus.mueller@ettus.com> wrote:
>
>
> No, it's several orders of magnitude worse and generally insufficient for anything where 
> you need synchronization.
>
> Best,
> Marcus
>
> On 18.05.23 17:12, Hamed Al-Zubi wrote:
> Hello Dears,
>
> I would like to inquire about the synchronization of two USRPs X300, one acting as a 
> transmitter (Tx) and the other as a receiver (Rx). If both USRPs are connected to the same 
> laptop, I'm wondering if the accuracy provided by PC clock synchronization is similar (or 
> close) to that achieved through GPSDO synchronization?
>
> Regards,
> HZ