Hi Yan, With the same antenna: That is going to be impossible, because you can't TX and RX on the same port with a USRP. Also, the TX would be extremely loud and possibly even damage RX.
Calibration: Measure a known loopback channel (ie. a cable with an attenuator that you've measured with a Network Analyzer), and calibrate that way, or estimate loopback from your observation. Best regards, Marcus On 15.12.2015 18:28, Yan Huang wrote: > Hi Marcus, > > I want to analyse the wireless network in single channel with the same > antenna. > > And how can I calibrate the random phase offset with B210? > > Thanks, > Yan > > -----Original Message----- > From: discuss-gnuradio-bounces+eexyh22=nottingham.ac...@gnu.org > [mailto:discuss-gnuradio-bounces+eexyh22=nottingham.ac...@gnu.org] On Behalf > Of Marcus Müller > Sent: 15 December 2015 16:53 > To: discuss-gnuradio@gnu.org > Subject: Re: [Discuss-gnuradio] using USRP to get scattering parameters > > Hi Yan, > > that is an extremely broad question; what kind of network analyzer do you > have in mind? > > Notice that you will have to calibrate the B210 random TX/RX phase offset > after every tune. > > Best regards, > Marcus > > On 15.12.2015 17:31, Yan Huang wrote: >> I have tried to use USRP B210 and GNUradio to send and receive signal, and >> now I want to get the network's scattering parameters. But I don't know how >> to get them using the software. > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > > > This message and any attachment are intended solely for the addressee > and may contain confidential information. If you have received this > message in error, please send it back to me, and immediately delete it. > > Please do not use, copy or disclose the information contained in this > message or in any attachment. Any views or opinions expressed by the > author of this email do not necessarily reflect the views of the > University of Nottingham. > > This message has been checked for viruses but the contents of an > attachment may still contain software viruses which could damage your > computer system, you are advised to perform your own checks. Email > communications with the University of Nottingham may be monitored as > permitted by UK legislation. > _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
