On 05/25/2011 09:56 AM, David Evans wrote:
>
> This has never been clear to me!
> What about the phase ambiguity due to the fractional-N VCO's, as Marcus has
> mentioned?
>
> This has to be calibrated out, yes/no?, but how?, unless after a retune you
> then
>
> TX a calibration sequence th
Hi!
- To my background there's to say - before you read this - I'm just a
software-dev. I have little expertise when it comes to hardware.
I support the development of a real-time application that uses
802.15.4 on an AT86230RF Chip. That RF chip is IEEE 802.15.4-2003
compliant.
It has got a data
This has never been clear to me!
What about the phase ambiguity due to the fractional-N VCO's, as Marcus has
mentioned?
This has to be calibrated out, yes/no?, but how?, unless after a retune you
then
TX a calibration sequence that you can correlate against and correct. But after
this, then
On Tue, May 24, 2011 at 5:29 PM, Colby Boyer wrote:
> On Tue, May 24, 2011 at 3:13 AM, Tom Rondeau
> wrote:
> > On Mon, May 23, 2011 at 10:37 PM, Ben Reynwar wrote:
> >>
> >> On Mon, May 23, 2011 at 12:09 PM, Josh Blum wrote:
> >> >
> >> >
> >> > On 05/23/2011 03:29 AM, Vlad Stoianovici wrote:
This has never been clear to me!
What about the phase ambiguity due to the fractional-N VCO's, as Marcus has
mentioned?
This has to be calibrated out, yes/no?, but how?, unless after a retune you
then
TX a calibration sequence that you can correlate against and correct. But after
this, then,
On Wed, May 25, 2011 at 10:14 AM, Josh Blum wrote:
>
>
>
> 2) Calibrate the setup. After you tune, the daughterboard LOs will have
> different constant phase offsets. With boards like WBX, its actually
> possible to sync the LOs using hardware, but this isnt implemented yet.
> In any case, *no mat
Just FYI, to encourage GNURadio users,
Received using GR USRP1 + TVRX (traditional, no uhd). Satellite Feng Yun
channel-6 HRPT (1km resolution) gray-scale unprocessed image
showing volcanic ash cloud entering Scandinavian airspace on Tuesday 24th May @
1350Z
http://www.poes-weather.com/download
On Wed, May 25, 2011 at 10:00 AM, Tom Rondeau wrote:
> On Tue, May 24, 2011 at 5:29 PM, Colby Boyer wrote:
>
>> On Tue, May 24, 2011 at 3:13 AM, Tom Rondeau
>> wrote:
>> > On Mon, May 23, 2011 at 10:37 PM, Ben Reynwar wrote:
>> >>
>> >> On Mon, May 23, 2011 at 12:09 PM, Josh Blum
>> wrote:
>> >
Hello everyone
I’m using an USRP with a XCVR2450 daughter board working at 2.4 - 2.5 GHz. I
want to find a threshold between thermal noise and signals energy using the
script usrp_spectrum_sense.py and sensing from 2.400 GHz to 2.500 GHz. To do
that, I replaced the WiFi antenna with a resistor of
On May 25, 2011, at 9:14 AM, Josh Blum wrote:
> 2) Calibrate the setup. After you tune, the daughterboard LOs will have
> different constant phase offsets.
In my experience (with a WBX in a USRP2 and a DBSRX2 in an N210), the phase
offsets can change between bursts, not just when you retune. Is
On 25/05/2011 12:01 PM, Marc Epard wrote:
On May 25, 2011, at 9:14 AM, Josh Blum wrote:
2) Calibrate the setup. After you tune, the daughterboard LOs will have
different constant phase offsets.
In my experience (with a WBX in a USRP2 and a DBSRX2 in an N210), the phase
offsets can change betw
is it possible to show in the *wxgui_scopesink* the "Counts" values in
the form of a log scale, i.e. 10^(-1) 10^(-2), 10^(-3), 10^(-4) and so on ?
do i have to modify some source python file ?
thx in advance
Regards, Arturo
___
Discuss-gnuradio maili
On Tue, May 24, 2011 at 3:57 PM, Camden Mendiola
wrote:
> Hi,
>
> Doe the USRP2 require specific FPGA and firmware contents to interface with
> simulink? When I turn on the USRP2 with the SD card in, all 6 leds flash and
> then D and F stay on. Does this mean my SD card is properly programmed with
On Wed, May 25, 2011 at 2:21 PM, Patrik Tast wrote:
> Just FYI, to encourage GNURadio users,
>
> Received using GR USRP1 + TVRX (traditional, no uhd). Satellite Feng Yun
> channel-6 HRPT (1km resolution) gray-scale unprocessed image
> showing volcanic ash cloud entering Scandinavian airspace on Tu
On 05/25/2011 12:16 PM, Arturo Rinaldi wrote:
> is it possible to show in the *wxgui_scopesink* the "Counts" values in
> the form of a log scale, i.e. 10^(-1) 10^(-2), 10^(-3), 10^(-4) and so on ?
>
> do i have to modify some source python file ?
>
yup. You may want to go after wxgui/plotters/
On 05/25/2011 12:01 PM, Marc Epard wrote:
> On May 25, 2011, at 9:14 AM, Josh Blum wrote:
>
>> 2) Calibrate the setup. After you tune, the daughterboard LOs will
>> have different constant phase offsets.
>
> In my experience (with a WBX in a USRP2 and a DBSRX2 in an N210), the
> phase offsets c
On 05/25/2011 10:51 AM, Douglas Geiger wrote:
> On Wed, May 25, 2011 at 10:14 AM, Josh Blum wrote:
>>
>>
>>
>> 2) Calibrate the setup. After you tune, the daughterboard LOs will have
>> different constant phase offsets. With boards like WBX, its actually
>> possible to sync the LOs using hardwar
On Wed, May 25, 2011 at 12:52 PM, Josh Blum wrote:
>
>
>>
>> What will it take to implement syncing the LOs on the daughterboards
>> that do support this - is this on the roadmap for UHD currently?
>>
>
> Basically a timed spi command can sync the LOs. Its on the roadmap. That
> wont forgo the nee
Dear All,
I have a question regarding the first complex multiplication process with
the IF sinusoid in the USRP. Which of the scheme mentioned below is actually
happening in the USRP?
Let's say that two ADCs provide the sampled received signal to the next
stage of processing. Let's call the sample
On Wed, 2011-05-25 at 08:51 -0700, Lebowski80 wrote:
> Hello everyone
>
> I’m using an USRP with a XCVR2450 daughter board working at 2.4 - 2.5 GHz. I
> want to find a threshold between thermal noise and signals energy using the
> script usrp_spectrum_sense.py and sensing from 2.400 GHz to 2.500 G
On Wed, 2011-05-25 at 12:14 -0500, John Andrews wrote:
> Dear All,
>
> I have a question regarding the first complex multiplication process
> with the IF sinusoid in the USRP. Which of the scheme mentioned below
> is actually happening in the USRP?
>
>
> Let's say that two ADCs provide the sampl
On Wed, 2011-05-25 at 12:14 -0500, John Andrews wrote:
> Dear All,
>
> I have a question regarding the first complex multiplication process
> with the IF sinusoid in the USRP. Which of the scheme mentioned below
> is actually happening in the USRP?
I should also clarify -- USRPs are zero-IF quadr
Yep,
Patrik
- Original Message -
From: "Alexandru Csete"
To:
Sent: Wednesday, May 25, 2011 19:39
Subject: Re: [Discuss-gnuradio] Tuesday, 24th May sample volcanic ash image
On Wed, May 25, 2011 at 2:21 PM, Patrik Tast
wrote:
Just FYI, to encourage GNURadio users,
Received using
Hi Alexander - I think Martin & Tom covered that GNU Radio is quite capable of
being programmed for the basic receiver processing. You might need to play
around a bit with your DSP blocks, but otherwise I think GNU Radio's data
processing is up to the task.
On May 23, 2011, at 3:50 PM, Alexand
Michael-
> Hi Alexander - I think Martin & Tom covered that GNU Radio
> is quite capable of being programmed for the basic receiver
> processing. You might need to play around a bit with your
> DSP blocks, but otherwise I think GNU Radio's data
> processing is up to the task.
>
> On May 23, 2011,
Hi all,
I have been familiarizing myself with the inner guts of gnuradio and
hacked together the attached patch, applied to tag v3.3.0. It is an
extended version of gr_ofdm_cyclic_prefixer which can add cyclic
suffix and symbol overlapping, which is used in VDSL/2 standards, and
it is named gr_dmt
Alexander is asking excellent questions and I'm surprised at the tepid
response -- he's got like 4 replies so far? He's the prototype GNU
radio user who needs to maintain his group's IP, he should be
receiving "how to's", not "INALs". -Jeff
Actually, IANAL is a perfectly-valid response. IP lice
On 04/21/2011 06:40 PM, 김보미 wrote:
> 1) Buy one USRP N200 because of this comment of Ettus “Please
> consider the USRP N200 series instead of USPR2.”
>
> And connect *the USRP2* and USRP N200 with MIMO cable to implement
> the relay system
>
> 2) Buy one USRP.
>
> Then, use the USRP fo
i have an issue regarding the SDCC executable in the building of
gnuradio 3.3.0 on Fedora 15. I set up the PATH in my *.bashrc* file as :
/export PATH=/usr/libexec/sdcc:$PATH
/as written in the build guide but I still get the error in the
configure process :
/USRP requires sdcc. sdcc not fou
On 05/25/2011 09:01 PM, Arturo Rinaldi wrote:
> i have an issue regarding the SDCC executable in the building of
> gnuradio 3.3.0 on Fedora 15. I set up the PATH in my *.bashrc* file as :
>
> /export PATH=/usr/libexec/sdcc:$PATH
>
> /as written in the build guide but I still get the error in the
>
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