No. A real-sampled signal would Need to be sampled at twice the notional bandwidth. So the data rate is the same.
Sent from my iPhone > On Apr 12, 2021, at 11:59 PM, 王璀 WANG Cui <iucg...@msn.com> wrote: > > > That make sense, I guess I would modify it to accept more format. > However, for the hardware side, it accept only Complex OTW format, which > means it need double bandwidth from host (I am using B210, USB3). When > transmit high sample rate signal, it is very easy to underflow. If we can > upgrade firmware to handle format conversion on hardware level, it will ease > a lot on host computing resource and USB/NIC bandwidth and performance. > Thanks! > > From: Marcus D Leech <patchvonbr...@gmail.com> > Sent: Tuesday, April 13, 2021 11:45 AM > To: 王璀 WANG Cui <iucg...@msn.com> > Cc: USRP-users@lists.ettus.com > Subject: Re: [USRP-users] How to tx s16 file with tx_samples_from_file > > The tx_samples_from_file application is just an example application. You are > free to modify it to meet your needs, including converting real-samples data > to complex baseband data > > The hardware, however, supports complex baseband data, In either sc16 or sc8 > format “over the wire”. The host software (whether that’s the > tx_samples_from_file example code or your own) is free to accept and convert > files into the baseband format accepted by the radio hardware. > > Sent from my iPhone > > > On Apr 12, 2021, at 10:08 PM, 王璀 WANG Cui <iucg...@msn.com> wrote: > > > Thanks for reply. > However for RF signal, IQ Complex signal double the file size, which is quite > inconvenient, it will be best that USRP can natively support such format. > (Even sometimes RF signal is in 4-bit, 1 bit format, and convert to I/Q will > be more than 10 times larger...) > > From: Marcus D Leech <patchvonbr...@gmail.com> > Sent: Tuesday, April 13, 2021 09:44 AM > To: ?? WANG Cui <iucg...@msn.com> > Cc: USRP-users@lists.ettus.com > Subject: Re: [USRP-users] How to tx s16 file with tx_samples_from_file > > Complex baseband is the natural format for this stuff. If you have > real-sampled data you’ll have to convert it into complex baseband first. > > Sent from my iPhone > > > > On Apr 12, 2021, at 9:32 PM, ?? WANG Cui <iucg...@msn.com> wrote: > > > Hi, > When I try tx_samples_from_file example, looks like it only take Complex data > format. > However I have signal file in RF direct sample format (each data element > represent a sample value), say it is “s8” or “s16” format as defined in UHD > term. > I wonder how can I transmit such file? Or must I convert it into Interleaved > I/Q (Complex) format? > Thanks in advance, > > iucganw > > _______________________________________________ > USRP-users mailing list -- usrp-users@lists.ettus.com > To unsubscribe send an email to usrp-users-le...@lists.ettus.com
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