The output SNR will be utterly dominated by the inherent DAC noise. There’s a good article here:
https://www.analog.com/media/en/training-seminars/tutorials/MT-001.pdf Sent from my iPhone > On Nov 30, 2020, at 4:03 AM, Lukas Haase via USRP-users > <usrp-users@lists.ettus.com> wrote: > > Hello, > > Does anyone know what the *TX* noise figure (output SNR) of the UBX160 is? > Roughly? > For simplicity, can neglect phase noise and assume white noise floor. > > In words, if I transmit a full-scale sinusoidal signal, what will be the > noise floor around that signal? > > Of course, this will depend on TX Gain setting. > > For example, a -3dBFS signal at TX gain 25 gives -3+25-5.56 = 16.44dBm. What > will roughly be the noise power (and hence SNR)? > > Thanks, > Lukas > > > PS: Usually we are interested in receiver (not transmitter) noise but the TX > SNR can be relevant for self-interference. > > > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
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