RM
Ruben.Merz@swisscom.com
Tue, Nov 4, 2014 11:37 AM
Thanks.
For an application where we want to address two x300/x310 (4 TX MIMO transmitter) with LTE-like waveform, therefore a sampling of 30.72 MS/s (or close to 0.99 Gbit/s per daughter-board if am I not mistaken), would you recommend a dual 10 Gbit interface or two separate 10 Gbit interfaces?
Ruben
-----Original Message-----
From: Marcus Müller [mailto:marcus.mueller@ettus.com]
Sent: Tuesday, November 04, 2014 12:04 PM
To: Merz Ruben, INI-INO-ECO-MXT; usrp-users@lists.ettus.com
Subject: Re: [USRP-users] X310 simultanuous capture using dual 10 Gbit or 10-
Gbit + PCI-E
Hello Ruben,
can you confirm that you don't need to use both 10 Gbit interfaces
simultaneously with a x300/x310?
Yes, unless you exceed the bandwidth offer by a single link, which you can
effectively only do by driving at least one channel at 200MS/s, which in fact is a
very valid operation mode in some cases (think spectrum monitoring with
custom RF frontends).
Generally, the X3x0 offers the means to use the different interfaces, and you
get to pick any one or one of a few combinations [1], but as long as your
desired bandwidth (ie. samples/second*bits/sample) fits through an interface,
you can use that one alone.
Best regards,
Marcus
[1]http://files.ettus.com/manual/page_usrp_x3x0.html#x3x0_load_fpga_imgs_f
pga_flavours
On 04.11.2014 11:53, Ruben.Merz@swisscom.com wrote:
To piggyback on this question: can you confirm that you don't need to use
both 10 Gbit interfaces simultaneously with a x300/x310?
-----Original Message-----
From: USRP-users [mailto:usrp-users-bounces@lists.ettus.com] On
Behalf Of Marcus Müller via USRP-users
Sent: Tuesday, November 04, 2014 11:31 AM
To: usrp-users@lists.ettus.com
Subject: Re: [USRP-users] X310 simultanuous capture using dual 10
Gbit or 10- Gbit + PCI-E
Hi Martin,
technically, you can transport all streams over the same link. Let's
assume you're capturing 100MS/s on both cards (which makes sense,
because the analog bandwidth of the -120 daughterboards allows for a
maximum of 120MHz of usable spectrum, anyways):
1e8S/s * 2 * 16b/S * 2 = 64e8b/s = 6.4e9 b/s < 10Gb/s explanation of
above
formula: we have 100 millions of samples per second, each sample
being I+Q (thus the first factor of 2) and having 16 bit; we have
this on each of our 2 daughterboards, leading us to a total of
6.4Gb/s, which comfortably fits into the 10Gb/s of the interface.
Now, the real challenge is to process that data. The average desktop
PC will usually be underpowered to even just receive these samples
and don't do anything with them. You'll need a really really strong
storage system to store that away, and real time signal processing on
this scale might need impressive hardware, depending on what you're
Greetings,
Marcus
On 04.11.2014 11:20, Martin via USRP-users wrote:
Hi,
I am interested to know what is needed to simultanous capture
wideband signals on both channels of a USRP X310.
Can you simultanuously capture a signal from the first daughterboard
using first 10 Gbit interface and capture signal from the second
daughterboard using PCI-E or second 10 Gbit interface?
Is simultanuous use of dual 10 Gbit or 10 Gbit + PCI-E use supported
yet in the hardware, firmware and software?
Thanks in advance,
Martin Dudok van Heel
USRP-users mailing list
USRP-users@lists.ettus.com
http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
Thanks.
For an application where we want to address two x300/x310 (4 TX MIMO transmitter) with LTE-like waveform, therefore a sampling of 30.72 MS/s (or close to 0.99 Gbit/s per daughter-board if am I not mistaken), would you recommend a dual 10 Gbit interface or two separate 10 Gbit interfaces?
Ruben
> -----Original Message-----
> From: Marcus Müller [mailto:marcus.mueller@ettus.com]
> Sent: Tuesday, November 04, 2014 12:04 PM
> To: Merz Ruben, INI-INO-ECO-MXT; usrp-users@lists.ettus.com
> Subject: Re: [USRP-users] X310 simultanuous capture using dual 10 Gbit or 10-
> Gbit + PCI-E
>
> Hello Ruben,
>
> >can you confirm that you don't need to use both 10 Gbit interfaces
> simultaneously with a x300/x310?
> Yes, unless you exceed the bandwidth offer by a single link, which you can
> effectively only do by driving at least one channel at 200MS/s, which in fact is a
> very valid operation mode in some cases (think spectrum monitoring with
> custom RF frontends).
> Generally, the X3x0 *offers* the means to use the different interfaces, and you
> get to pick any one or one of a few combinations [1], but as long as your
> desired bandwidth (ie. samples/second*bits/sample) fits through an interface,
> you can use that one alone.
>
> Best regards,
> Marcus
>
>
> [1]http://files.ettus.com/manual/page_usrp_x3x0.html#x3x0_load_fpga_imgs_f
> pga_flavours
> On 04.11.2014 11:53, Ruben.Merz@swisscom.com wrote:
> > To piggyback on this question: can you confirm that you don't need to use
> both 10 Gbit interfaces simultaneously with a x300/x310?
> >
> > Thanks
> > Ruben
> >
> >> -----Original Message-----
> >> From: USRP-users [mailto:usrp-users-bounces@lists.ettus.com] On
> >> Behalf Of Marcus Müller via USRP-users
> >> Sent: Tuesday, November 04, 2014 11:31 AM
> >> To: usrp-users@lists.ettus.com
> >> Subject: Re: [USRP-users] X310 simultanuous capture using dual 10
> >> Gbit or 10- Gbit + PCI-E
> >>
> >> Hi Martin,
> >>
> >> technically, you can transport all streams over the same link. Let's
> >> assume you're capturing 100MS/s on both cards (which makes sense,
> >> because the analog bandwidth of the -120 daughterboards allows for a
> >> maximum of 120MHz of usable spectrum, anyways):
> >> 1e8S/s * 2 * 16b/S * 2 = 64e8b/s = 6.4e9 b/s < 10Gb/s explanation of
> >> above
> >> formula: we have 100 millions of samples per second, each sample
> >> being I+Q (thus the first factor of 2) and having 16 bit; we have
> >> this on each of our 2 daughterboards, leading us to a total of
> >> 6.4Gb/s, which comfortably fits into the 10Gb/s of the interface.
> >>
> >> Now, the real challenge is to process that data. The average desktop
> >> PC will usually be underpowered to even just receive these samples
> >> and don't do anything with them. You'll need a really really strong
> >> storage system to store that away, and real time signal processing on
> >> this scale might need impressive hardware, depending on what you're
> actually trying to do.
> >>
> >> Greetings,
> >> Marcus
> >>
> >> On 04.11.2014 11:20, Martin via USRP-users wrote:
> >>> Hi,
> >>>
> >>> I am interested to know what is needed to simultanous capture
> >>> wideband signals on both channels of a USRP X310.
> >>>
> >>> Can you simultanuously capture a signal from the first daughterboard
> >>> using first 10 Gbit interface and capture signal from the second
> >>> daughterboard using PCI-E or second 10 Gbit interface?
> >>>
> >>>
> >>> Is simultanuous use of dual 10 Gbit or 10 Gbit + PCI-E use supported
> >>> yet in the hardware, firmware and software?
> >>>
> >>>
> >>> Thanks in advance,
> >>>
> >>> Martin Dudok van Heel
> >>>
> >>> _______________________________________________
> >>> USRP-users mailing list
> >>> USRP-users@lists.ettus.com
> >>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
> >>
> >> _______________________________________________
> >> USRP-users mailing list
> >> USRP-users@lists.ettus.com
> >> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
ME
Matt Ettus
Tue, Nov 4, 2014 4:31 PM
If the total data rate is less than. 10 good like yours is, just use a
single. 10g connection.
Matt
On Nov 4, 2014 3:38 AM, "Ruben Merz via USRP-users" <
usrp-users@lists.ettus.com> wrote:
Thanks.
For an application where we want to address two x300/x310 (4 TX MIMO
transmitter) with LTE-like waveform, therefore a sampling of 30.72 MS/s (or
close to 0.99 Gbit/s per daughter-board if am I not mistaken), would you
recommend a dual 10 Gbit interface or two separate 10 Gbit interfaces?
Ruben
-----Original Message-----
From: Marcus Müller [mailto:marcus.mueller@ettus.com]
Sent: Tuesday, November 04, 2014 12:04 PM
To: Merz Ruben, INI-INO-ECO-MXT; usrp-users@lists.ettus.com
Subject: Re: [USRP-users] X310 simultanuous capture using dual 10 Gbit
Gbit + PCI-E
Hello Ruben,
can you confirm that you don't need to use both 10 Gbit interfaces
simultaneously with a x300/x310?
Yes, unless you exceed the bandwidth offer by a single link, which you
effectively only do by driving at least one channel at 200MS/s, which in
very valid operation mode in some cases (think spectrum monitoring with
custom RF frontends).
Generally, the X3x0 offers the means to use the different interfaces,
get to pick any one or one of a few combinations [1], but as long as your
desired bandwidth (ie. samples/second*bits/sample) fits through an
you can use that one alone.
Best regards,
Marcus
[1]
To piggyback on this question: can you confirm that you don't need to
both 10 Gbit interfaces simultaneously with a x300/x310?
-----Original Message-----
From: USRP-users [mailto:usrp-users-bounces@lists.ettus.com] On
Behalf Of Marcus Müller via USRP-users
Sent: Tuesday, November 04, 2014 11:31 AM
To: usrp-users@lists.ettus.com
Subject: Re: [USRP-users] X310 simultanuous capture using dual 10
Gbit or 10- Gbit + PCI-E
Hi Martin,
technically, you can transport all streams over the same link. Let's
assume you're capturing 100MS/s on both cards (which makes sense,
because the analog bandwidth of the -120 daughterboards allows for a
maximum of 120MHz of usable spectrum, anyways):
1e8S/s * 2 * 16b/S * 2 = 64e8b/s = 6.4e9 b/s < 10Gb/s explanation of
above
formula: we have 100 millions of samples per second, each sample
being I+Q (thus the first factor of 2) and having 16 bit; we have
this on each of our 2 daughterboards, leading us to a total of
6.4Gb/s, which comfortably fits into the 10Gb/s of the interface.
Now, the real challenge is to process that data. The average desktop
PC will usually be underpowered to even just receive these samples
and don't do anything with them. You'll need a really really strong
storage system to store that away, and real time signal processing on
this scale might need impressive hardware, depending on what you're
Greetings,
Marcus
On 04.11.2014 11:20, Martin via USRP-users wrote:
Hi,
I am interested to know what is needed to simultanous capture
wideband signals on both channels of a USRP X310.
Can you simultanuously capture a signal from the first daughterboard
using first 10 Gbit interface and capture signal from the second
daughterboard using PCI-E or second 10 Gbit interface?
Is simultanuous use of dual 10 Gbit or 10 Gbit + PCI-E use supported
yet in the hardware, firmware and software?
Thanks in advance,
Martin Dudok van Heel
USRP-users mailing list
USRP-users@lists.ettus.com
http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
If the total data rate is less than. 10 good like yours is, just use a
single. 10g connection.
Matt
On Nov 4, 2014 3:38 AM, "Ruben Merz via USRP-users" <
usrp-users@lists.ettus.com> wrote:
> Thanks.
> For an application where we want to address two x300/x310 (4 TX MIMO
> transmitter) with LTE-like waveform, therefore a sampling of 30.72 MS/s (or
> close to 0.99 Gbit/s per daughter-board if am I not mistaken), would you
> recommend a dual 10 Gbit interface or two separate 10 Gbit interfaces?
> Ruben
>
> > -----Original Message-----
> > From: Marcus Müller [mailto:marcus.mueller@ettus.com]
> > Sent: Tuesday, November 04, 2014 12:04 PM
> > To: Merz Ruben, INI-INO-ECO-MXT; usrp-users@lists.ettus.com
> > Subject: Re: [USRP-users] X310 simultanuous capture using dual 10 Gbit
> or 10-
> > Gbit + PCI-E
> >
> > Hello Ruben,
> >
> > >can you confirm that you don't need to use both 10 Gbit interfaces
> > simultaneously with a x300/x310?
> > Yes, unless you exceed the bandwidth offer by a single link, which you
> can
> > effectively only do by driving at least one channel at 200MS/s, which in
> fact is a
> > very valid operation mode in some cases (think spectrum monitoring with
> > custom RF frontends).
> > Generally, the X3x0 *offers* the means to use the different interfaces,
> and you
> > get to pick any one or one of a few combinations [1], but as long as your
> > desired bandwidth (ie. samples/second*bits/sample) fits through an
> interface,
> > you can use that one alone.
> >
> > Best regards,
> > Marcus
> >
> >
> > [1]
> http://files.ettus.com/manual/page_usrp_x3x0.html#x3x0_load_fpga_imgs_f
> > pga_flavours
> > On 04.11.2014 11:53, Ruben.Merz@swisscom.com wrote:
> > > To piggyback on this question: can you confirm that you don't need to
> use
> > both 10 Gbit interfaces simultaneously with a x300/x310?
> > >
> > > Thanks
> > > Ruben
> > >
> > >> -----Original Message-----
> > >> From: USRP-users [mailto:usrp-users-bounces@lists.ettus.com] On
> > >> Behalf Of Marcus Müller via USRP-users
> > >> Sent: Tuesday, November 04, 2014 11:31 AM
> > >> To: usrp-users@lists.ettus.com
> > >> Subject: Re: [USRP-users] X310 simultanuous capture using dual 10
> > >> Gbit or 10- Gbit + PCI-E
> > >>
> > >> Hi Martin,
> > >>
> > >> technically, you can transport all streams over the same link. Let's
> > >> assume you're capturing 100MS/s on both cards (which makes sense,
> > >> because the analog bandwidth of the -120 daughterboards allows for a
> > >> maximum of 120MHz of usable spectrum, anyways):
> > >> 1e8S/s * 2 * 16b/S * 2 = 64e8b/s = 6.4e9 b/s < 10Gb/s explanation of
> > >> above
> > >> formula: we have 100 millions of samples per second, each sample
> > >> being I+Q (thus the first factor of 2) and having 16 bit; we have
> > >> this on each of our 2 daughterboards, leading us to a total of
> > >> 6.4Gb/s, which comfortably fits into the 10Gb/s of the interface.
> > >>
> > >> Now, the real challenge is to process that data. The average desktop
> > >> PC will usually be underpowered to even just receive these samples
> > >> and don't do anything with them. You'll need a really really strong
> > >> storage system to store that away, and real time signal processing on
> > >> this scale might need impressive hardware, depending on what you're
> > actually trying to do.
> > >>
> > >> Greetings,
> > >> Marcus
> > >>
> > >> On 04.11.2014 11:20, Martin via USRP-users wrote:
> > >>> Hi,
> > >>>
> > >>> I am interested to know what is needed to simultanous capture
> > >>> wideband signals on both channels of a USRP X310.
> > >>>
> > >>> Can you simultanuously capture a signal from the first daughterboard
> > >>> using first 10 Gbit interface and capture signal from the second
> > >>> daughterboard using PCI-E or second 10 Gbit interface?
> > >>>
> > >>>
> > >>> Is simultanuous use of dual 10 Gbit or 10 Gbit + PCI-E use supported
> > >>> yet in the hardware, firmware and software?
> > >>>
> > >>>
> > >>> Thanks in advance,
> > >>>
> > >>> Martin Dudok van Heel
> > >>>
> > >>> _______________________________________________
> > >>> USRP-users mailing list
> > >>> USRP-users@lists.ettus.com
> > >>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
> > >>
> > >> _______________________________________________
> > >> USRP-users mailing list
> > >> USRP-users@lists.ettus.com
> > >> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>
> _______________________________________________
> USRP-users mailing list
> USRP-users@lists.ettus.com
> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>
