-gmsktr.so: undefined symbol:
_ZN2gr6filter24mmse_fir_interpolator_ffC1Ev
I have tried two days to find the bug but no progress.does somebody
have experience about this problem? Any suggestions would be appreciated!
Best regards
Alex
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right folder to run gr-modtool makexml.
Does anybody meet this problem?
Best regards
Alex
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ot; FORCE)
set(GR_ZIGBEESINK_SWIG_INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/swig
CACHE INTERNAL "" FORCE)
# Create uninstall target
configure_file(
${C
wrote:
On Thu, Dec 19, 2013 at 11:12 AM, alex <mailto:alexleeresea...@gmail.com>> wrote:
Hi Martin,
Thanks for your information.
If I run the gr_modtool info in another OOT-module dir, I got the
following information:
Module name: gmsktr
API version:
middle sub-carriers are
always very lower than on the edges. I would like to ask if it is
because the Power spectral density in the transmitter or some other reasons.
Any feedback would be appreciated.
Best regards
Alex
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Hi Josh,
I see that there are some work on the SIMD optimized math blocks in
gr-blocks. I am wondering what kind of computer is used for your test
regarding this SIMD optimization.
Best Regards,
Changchun (Alex) Zhang
Cognitive-Radio Institute@Tntech
Thanks josh,
Do you notice that the http://www.joshknows.com cannot be accessed today? I
am within US.
B.R.
Changchun (Alex) Zhang
-邮件原件-
发件人: Josh Blum [mailto:j...@joshknows.com]
发送时间: Friday, January 27, 2012 12:56 PM
收件人: Alex
抄送: discuss-gnuradio@gnu.org
主题: Re: [Discuss-gnuradio
the file source block can read any file extension, the only thing the
data has to be formatted properly,
i.e. it has to store either binary data, complex numbers, integers,
floats and so on.
On Fri, Jul 16, 2010 at 5:59 PM, mehmet kabasakal <85kabasa...@gmail.com> wrote:
> Hi guys,
>
> I want to l
levant but I'm using GNU Radio 3.2.2 built from
source on Ubuntu 10.04 32bit
Any information would be greatly appreciated
Thank you
Alex
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ts, what it's doing and
when it stops.
Also when I run in single-thread scheduler I have a waveform that runs
with 3 threads and one with 2 threads and I would like to know what they
are
Thank you
Alex
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As far as I know that module is no longer supported and it's not
needed for running GNU Radio
Alex
2010/7/23 刘权 :
> I try to get gunradio3.3.0 launched on ubuntu 10.04, but the module
> gr-comedi can not pass building. when type ./configure, the result as
> follows:
>
> check
you need to go into gnuradio-3.2.2/gr-qtgui/src/lib and delete all the
files ending in moc.cc
and then run
./configure
make
make check
make install
Let me know if that fixes it for you
Alex
2010/7/23 刘权 :
> my gnuradio 3.2.2 passes through configure on ubuntu 10.04, while there is a
> bu
Well it seems I've found my answer now... "Remember, though, that the
corresponding E-GSM 900 uplink frequencies fall in the GSM 850 downlink
band". Wasn't quite what I was looking for...
From: Alex [mailto:a...@maxo.com.au]
Sent: Saturday, 30 October 2010 12:43 AM
T
According to a lot of pages the ISM Band filter must be removed to operate
Open BTS.
In Australia, we have mobile carriers operating in the lower half of the
900mhz ISM band - and only 918 - 926mhz is unlicensed. Is it possible to
have Open BTS only operate in the unlicensed spectrum - and if so
According to a lot of pages the ISM Band filter must be removed to operate
Open BTS.
In Australia, we have mobile carriers operating in the lower half of the
900mhz ISM band - and only 918 - 926mhz is unlicensed. Is it possible to
have Open BTS only operate in the unlicensed spectrum - and if so
Hi,
I have a DBSRX Rev 2.1, and I must use an active antenna that work at 5v
(max 30mA of power consumption). First of all, I try to short J101 and I
have 5V without any load, when I try to use this antenna the output voltage
go down at 35mV. I decide to test the voltage output where the load is m
Hello,
I'm working on a Gps software in conjunction with a usrp and dbsrx.
Unfortunately my dbsrx has an hardware problem and I can't acquire Gps
samples. Can someone record samples in L1 frequency (1.57542 Ghz) for me in
6.4msps/complex or 6.4msps/shorts and make it available for download or
uplo
a comprehensible GNURadio example for USRP2 + WBX in half-duplex-mode?
Regards,
Alex
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re any packet that has our own MAC address in the
source field.
On 26 Feb 2016 07:25, "Marcus D. Leech" <mle...@ripnet.com> wrote:
On 02/26/2016 07:00 AM, Alex Weihkopf wrote:
Hello,
I am using two USRP2 + WBX connected via cable on the TX/RX antenna ports. I want to
result show that the feedback taps are not involved in
computing at all, thus my output turns to
y[n] = 1.8*x[n]
I don't know anything wrong happened to my usage...
Need help. Thanks
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wrote:
> On 08/08/2013 05:25 PM, Alex Zhang wrote:
>
>> Hi,
>>
>> I am transmitting a series of BPSK burst signal and try to observe the
>> phase distortion for the BPSK signal on air. But it is found that the
>> Phases of different BPSK bursts are different.
>
Dear Jose
Can you tell me if you solved the problem with the POLAR code configurator
block? because I have the same problem in the gnuradio installed with
pybombs.
Thanks
Alex
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Sent from
Hello GNURadio Users,
Is it possible to specify the frequency spacing of the carriers in the OFDM
Transmitter Block or Carrier Allocator block? My assumption is the carrier
spacing is calculated from the sampling rate and the FFT length (e.g, if
sampling rate is 640k and fft length is 64, is the f
; phase tracking
Thank you,
Alex
From: discuss-gnuradio-bounces+alex=maxtechnetworks@gnu.org
[mailto:discuss-gnuradio-bounces+alex=maxtechnetworks@gnu.org] On Behalf Of
Irfan Ullah
Sent: Monday, January 06, 2014 11:55 AM
To: Discuss-gnuradio@gnu.org
Subject: [Discuss-gnuradio] purpose of
this observation.
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*Dreams can come true – just believe.*
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(*args, **kwargs)
RuntimeError: audio_oss_sink
I have tried using the flags '-O hw:0,0' and '-O plughw:0,0' with no
success. I am running on Ubuntu 12.04 64bit, and have verified that the
audio works otherwise (played some internet radio.)
Any ide
wgraph if I return 0 output_items most of the time?
Thanks,
Alex
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input items. So the CPU workload should be very small and the few items that pass the valve should not have a great effect.
Why am I getting worse performance with those few passed elements?
Alex
Gesendet: Freitag, 04. April 2014 um 00:09 Uhr
Von: "Tom Rondeau"
An:
But I get an error:
"RuntimeError: resolve: Host not found (authoritative)"
What am I doing wrong? I have no idea.
Regards,
Alex
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ata from UDP_sink to UPD_source, but I can't send random data from socket_PDU to UDP_source.
Alex
Gesendet: Samstag, 12. April 2014 um 17:38 Uhr
Von: "Marcus Müller"
An: discuss-gnuradio@gnu.org
Betreff: Re: [Discuss-gnuradio] Socket PDU: Host not found (authoritat
Maybe I found the mistake. I think it's a bug.
http://gnuradio.org/redmine/issues/613
I have to mention that the computer I'm working on has no internet connection.
Alex
Gesendet: Samstag, 12. April 2014 um 18:19 Uhr
Von: "Alex Weihkopf"
An: discuss-gnuradio
4itpp9ModulatorISt7complexIdEEC1Ev
In the last line Ican see that the problem is itpp, but I'm sure it's installed correctly (my flowgraph works on another computer where I followed the exact same instructions).
I am using Ubuntu 12.04 and Gnuradio 3.7.4.
Can
14_swig.dir/all] Error 2
make: *** [all] Error 2
Why does the second installation fail?
Regards,
Alex
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sed directly for the USRP N210, instead the
old USRP.
Thanks,
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.
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And I remember that
Eric
Blossom<http://dl.acm.org/author_page.cfm?id=81100473842&coll=DL&dl=ACM&trk=0&cfid=63471391&cftoken=37521642>
has a paper describing the GNURadio scheduler on parallel architecture. But
I don't remember the paper name.
On Tue, Jan 24, 201
,
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expecting that only one of the
block can be generated instead of combing it into the digital_swig module.
I don't know how to update the digital_swig correctly.
Does any friend has the clues?
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*Dreams can come true – just believe.*
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Di
Maybe I am confused about the generation of the module and block. But I
really don't know how to work on combining a chunk of blocks to a module.
On Wed, Mar 14, 2012 at 12:54 AM, Alex Zhang wrote:
> Hi Gurus,
>
> I am modifying some c++ code over the current ofdm modulator and
Resend this mail to ask for some guides.
On Wed, Mar 14, 2012 at 12:54 AM, Alex Zhang wrote:
> Hi Gurus,
>
> I am modifying some c++ code over the current ofdm modulator and
> demodulator. My question is:
>
> As the all the sub C++ blocks of ofdm are combined together into
digital_swig.ofdm_mapper_bcv, what the ususal way
is?
Best Regards,
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/lib/CMakeLists.txt,
> gr-digital/include/CMakeLists.txt, gr-digital/swig/CMakeLists.txt
> (Disclaimer: I didn't test this so it's possible I left one out)
>
> In the case of 3) you can use Martin's fabulous gr_modtool.
>
> Cheers,
> Ben
>
>
>
> On
s-gnuradio mailing list
> Discuss-gnuradio@gnu.org
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>
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ng forward to your input!
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thout counting the channel response length, can we get the peak
accurately, especially in multipath environment?
On Sun, Mar 25, 2012 at 12:40 PM, Tom Rondeau wrote:
> On Sat, Mar 24, 2012 at 8:52 PM, Alex Zhang
> wrote:
> > Hi Gurus,
> >
> > I just want to make sure
Resend this mail for some comments. Thanks.
On Tue, Mar 27, 2012 at 9:29 PM, Alex Zhang wrote:
> Hi Tom,
>
> Thanks for the reply.
> In the ofdm_sync_pn.py, I see that a matched filter is used, after the
> timing metric is obtained based on the correlation of the two halves of th
Hi Tom,
Just correct my mail.
I retest the case, it is found that my matlab code has some errors which
cause this confusion. Sorry for the incorrect result.
On Tue, Apr 3, 2012 at 12:43 AM, Alex Zhang wrote:
> Hi Tom,
>
> To dig the details of the current ofdm receiver synchronizati
solve this
problem. It is related to the full-duplex of the USRP2.
Any friends can give some clues? I am using the USRP N210.
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https
the TDD based full-duplex?
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;
> On 04/30/2012 08:09 AM, Alex Zhang wrote:
> > Hi,
> >
> > SBX is the daughterboard which supports full-duplex, but when I run the
> > tunnel.py to do the Ping experiment over the OFDM communication link, I
> > found that the transmitter can receive a lot of pack
stamps so you know exactly what recv samples to throw out.
>
> Thought of a few more:
>
> 3) The access code is already configurable parameter. Simply use a
> different access code for each communication channel.
>
> 4) It would also be possible to put some ki
The good news is that ping works much better when set the TX and RX at
different frequencies.
On Tue, May 1, 2012 at 2:39 PM, Alex Zhang wrote:
> Hi Josh,
>
> Seems that you suggest to add work in network programming to avoid any
> unwanted packets.
>
> My observations are tha
Anyone using GRC on Debian testing? I've build it from git but it won't run:
$ gnuradio-companion
Traceback (most recent call last):
File "/usr/local/bin/gnuradio-companion", line 58, in
from gnuradio.grc.python.Platform import Platform
File
"/usr/local/lib/python2.7/dist-packages/gnura
the corresponding performance is.
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On 17/05/12 19:33, William Pretty Security wrote:
I did a "find -name" in my GnuRadio directories and couldn't find any
xorg.conf file.
I found a number of xorg.conf files, but none that seem to relate
specifically to GnuRadio ...
Do I have to create one ??
xorg.conf is a system-wide config fi
Does anybody have any hints?
On Wed, May 16, 2012 at 10:41 PM, Alex Zhang wrote:
> Hi all,
>
> I did some experiments of Ping, between two USRP N210 nodes, over the OFDM
> link. I need to know if any other has the same performance as I did.
>
> This OFDM link is using two fr
result?
On Wed, May 16, 2012 at 10:41 PM, Alex Zhang wrote:
> Hi all,
>
> I did some experiments of Ping, between two USRP N210 nodes, over the OFDM
> link. I need to know if any other has the same performance as I did.
>
> This OFDM link is using two frequencies, 900MHz and 1
thanks for those constructive questions.[?]
On Thu, May 17, 2012 at 7:22 PM, Brian Padalino wrote:
> On Thu, May 17, 2012 at 7:06 PM, Alex Zhang
> wrote:
> > It seems that the GMSK modulation is doing well in supporting higher
> > datarate over GNURadio, than OFDM modulatio
computer.
The ping packet loss is 20% ~ 40%.
Actually, I just want to know any performance on such OFDM link has been
reported or not, as my benchmark.
On Fri, May 18, 2012 at 1:12 AM, Ian Buckley wrote:
> Alex,
> I'm not entirely sure you correctly understood Brian's point...he&
kind configuration.
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wrote:
>
>
> On 05/21/2012 04:12 PM, Alex Zhang wrote:
> > Thanks!
> >
> > I am trying to set up two channels on RX2 as Nick said. And the subdev is
> > set as "A:0 A:0". Please see the attachement for the GRC flow graph.
> >
> > But my problem
quot;, 1)
But my code is still different with one of your post here
http://lists.gnu.org/archive/html/discuss-gnuradio/2011-09/msg00309.html.
I think the dsp_freq is used for other purpose, right?
On Mon, May 21, 2012 at 9:27 PM, Josh Blum wrote:
>
>
> On 05/21/2012 06:57 PM, Alex
dio/2011-09/msg00309.html
> .
> > I think the dsp_freq is used for other purpose, right?
>
> Correct, the goal in that email was to bypass any frequency shifting
> done by the DSP in the FPGA.
>
> -josh
>
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*Dreams can come true – just believe.*
_
:
>
>
> On 05/22/2012 09:57 AM, Alex Zhang wrote:
> > The other question is that for it seems that we cannot set different
> sample
> > rate for the two channels, right?
>
> So thats not currently possible with the current USRP source/sink
> blocks. This would be an inter
ory
> Rutgers, USA.
>
>
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>
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verified it in your platform? I am concerned with the computing capability
of the host-pc. Can it really support so high data rate running the
hydra+GNURadio. My computer is i7 4Core @3.4GHz.
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ard interval, Sub-carrier spacing, and FEC ) hydra uses and setting
> GnuRadio to that. It should yield identical throughput.
>
> On Wed, May 23, 2012 at 12:49 PM, Alex Zhang
> wrote:
> > Hi,
> >
> > Considering the GNURadio provided OFDM implementaiton is not
Engineering
> Wireless Information & Networking Laboratory
> Rutgers, USA.
>
>
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>
>
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I think Matlab can handle this, depending your PC memory You need to
write some Matlab code to read the file which may contain the complex
samples (gr-complex).
On Thu, May 24, 2012 at 3:18 PM, Nazmul Islam wrote:
> Thanks, Alex.
>
> I tried using the log files in benchmark_rx. But
It is great to hear this solution!
On Thu, May 31, 2012 at 1:28 PM, Josh Blum wrote:
>
>
> On 05/30/2012 06:33 PM, Alex Zhang wrote:
> > Hi,
> >
> > In my applications, after the flow graph is initialized, I need to
> > dynamically control the receiving of the
PC thru the
ethernet between USRP and PC?
On Thu, May 31, 2012 at 1:28 PM, Josh Blum wrote:
>
>
> On 05/30/2012 06:33 PM, Alex Zhang wrote:
> > Hi,
> >
> > In my applications, after the flow graph is initialized, I need to
> > dynamically control the receiving of
e the GNURadio is comaptible with
the installed UHD? Is it corret for what I did for this mismatch problem,
or any other way?
I searched archive but did not find related errors ever posted.
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On Wednesday 13 Jun 2012 08:24:54 J. Domburg wrote:
> "Cannot import gnuradio.
>
> Is the python path environment variable set correctly?
> All OS: PYTHONPATH
>
> Is the library path environment variable set correctly?
> Linux: LD_LIBRARY_PATH
> Windows: PATH
> MacOSX: DY
-gnuradio mailing list
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> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>
>
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ize 42 come from? Anyone has idea?
> I am using two USRP N210s, the daughter boards are both XCVR2450.
>
> --
> Regards,
> Weixian Zhou
>
>
>
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> Discuss-gnuradio
, 2012 at 3:05 PM, Alex Zhang wrote:
> Something like discarded.
>
>
> On Fri, Jun 15, 2012 at 11:59 AM, Weixian Zhou wrote:
>
>> What do you mean by "it may be consumed"?
>>
>>
>> On Fri, Jun 15, 2012 at 12:44 PM, Alex Zhang wrote:
>>
>>
Weixian,
Could you please try the ping command like this (if you are working on
linux):
*sudo ping 192.168.200.2 -i 0.01*
-i 0.01 means the time interval between pings is 0.01 second. And tell me
what happened.
You can try different time intervals.
On Fri, Jun 15, 2012 at 5:37 PM, Alex Zhang
On 16/06/12 05:40, Phil wrote:
Does the following look correct? Also, there is no mention under
"sources" of osmocom in gnuradio_companion. I'm trying to use my Ezcap
dongle with Gnuradio.
-- checking for module 'libosmosdr'
-- package 'libosmosdr' not found
-- libosmosdr not found.
-
You d
Try running the test program that comes with one of the libraries [can't
remember which one OTTOMH] as yourself and as root. That should answer
the permissions question.
alexd
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On 16/06/12 11:56, Phil wrote:
OK I now have simple_FM_rcv running as root!
So all I need now is to set the permission of the dongle. How might I
do that?
I have an FCD and an RTL dongle. I got the FCD first, for which I
created a udev rule. I duplicated these for the RTL dongle:
$ cat /e
On 17/06/12 02:38, Phil wrote:
By "reload udev" do you mean restart udevd?
To be precise, reloading a service [usually] results in it re-reading
its config without restarting it. Restarting it, stops it and starts it.
Restarting udev will achieve the same end result in this case as
reloadi
avoid
possible collision.
Alex
On Mon, Jun 18, 2012 at 10:10 AM, Weixian Zhou wrote:
> The following is the messages of the transmitter after I ping. The
> packages of len(payload)=42 failed CRC check, but other packages succeed.
> *URx: ok = True len(payload) = 101*
> *Tx: len(pay
rward to your further comments.
Thanks,
Alex(Changchun) Zhang
Cognitive Radio Institute @ Tennessee Tech Univ.
-- Forwarded message --
From: Alex Zhang
Date: Mon, Jun 18, 2012 at 4:53 PM
Subject: Re: [Discuss-gnuradio] tunnel.py destination host unreachable
To: Weixian Zhou
Cc: j...@et
with an issue I was having
> getting the xcvr2450 to tune to the right tx/rx frequencies...
>
> I suggest printing out the result of the magnitude squared to see if this
> is the case as well for you guys.
>
> Regards,
> Jason T.
>
> ------
&g
On Friday 22 Jun 2012 11:47:13 Phil wrote:
> A Google search hasn't provided anything useful.
Add 'funcube' to your search query.
alexd
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[kmail not quoting properly, choking on what it thinks is a sig sep]
There is no "error" really, it's just that it's only building the
documentation for UHD, as the tests for the rest of the components have
failed.
> -- Dependency HAVE_PYTHON_MODULE_CHEETAH = FALSE
> -- Disabling LibUHD s
On Monday 02 Jul 2012 23:19:24 Jared Harvey wrote:
> /home/jharvey/.local/lib/python2.7/site-packages/numpy/core/multiarray.so:
> wrong ELF class: ELFCLASS32
Mixture of 32 and 64 bit packages, by any chance?
alexd
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On 03/07/12 20:34, Jared Harvey wrote:
Hello Alex,
/home/jharvey/.local/lib/python2.7/site-packages/numpy/core/multiarray.so:
wrong ELF class: ELFCLASS32
AD> Mixture of 32 and 64 bit packages, by any
AD> chance?
Not likely, but perhaps. The packages were
installed via p
On 07/07/12 18:49, Patrik Tast wrote:
Great work!
Connecting any RX/TX to the computer PCI "smells problems..."
I wouldn't cosider this option,
A few points:
* I have a PCI DVB card, works great for recording TV. The RF section
is shielded inside a can.
* Winradio internal cards has been
; > Welcome any comments!
>> >
>>
>> I recall a similar discussion, and one simple solution was to use a
>> different frequency for each communication channel.
>>
>> So for communication between A -> B use frequencyX
>> and fo
there's a limit as to how much data the USRP2 can buffer before
transmitting?
Thank you.
Regards,
Alex Teo
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measurement related to working frequency?
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-- Forwarded message --
From: Alex Zhang
Date: Tue, Jul 24, 2012 at 4:08 PM
Subject: Any friends ever worked on noise variance estimation using the
USRP?
To: gnuradio mailing list
Hi gurus,
I am doing an experiment which need to estimate the noise variance
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Just state, I was using the tunnel.py instead of the rawOFDM to do the
test. Seems nobody declared good bitrate within this community, although I
have asked for many times.
On Mon, Aug 6, 2012 at 3:06 PM, Alex Zhang wrote:
> Hi Qing,
>
> Your experience is exactly what I have tested.
http://iweb.tntech.edu/rqiu/publications/JCMQiu_2012.pdf
On Mon, Aug 6, 2012 at 9:33 PM, Qing Yang wrote:
> Hi Alex,
>
> Thanks for sharing your experience. Are you using RawOFDM or Benchmark
> OFDM?
>
> I agree with you that we need more powerful PCs because for large
> bandwidth w
On Tue, Aug 7, 2012 at 9:12 AM, wrote:
> **
>
> On 06 Aug 2012 17:59, Alex Zhang wrote:
>
> Just state, I was using the tunnel.py instead of the rawOFDM to do the
> test. Seems nobody declared good bitrate within this community, although I
> have asked for many times
> shouldn't use any kind of hub/switch.
>
> -Nathan
>
> I've found that if you're consistently running out of steam, enabling
> real-time scheduling doesn't help.
>
>
>
>
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Hi,
I want to collect the samples of the USRP at the IF instead of the
baseband, so is there any way to read the ADC samples directly without
downconversion, at the PC?
I do not want to touch the FPGA.
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Alex,
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