>
>
> On Sat, Mar 28, 2009 at 9:27 AM, Karthik wrote:
>
>> 2009/3/27 Mikhail Tadjikov
>>
>> Hello,
>>>
>>> I'm trying to build several signal processing blocks for a project that
>>> I'm doing using USRP2. I was going through the examples and sample code
>>> along with browsing the source code
Hi,
I am writing an interface between Windows and USRP. I have a simple question
to ask, does the USRP need any manual board configurations before I start
communicating with the FPGA through USB?
Thanks.
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Hi,
> On Sat, 3/28/09, slimchao wrote:
>
> Hello,
>
> can anyone explain how implemented the CIC interploator
> Filter (how many
> stages) in the FPGA. if we want a interpolation of 32, the
> interpolation
> rate is 4 in the AD9860 (4x interpolation), sothat the
> interpolation is
> 32/4=8
Hi,
I'm trying to use a USRP to decode a CPFSK signal at 980MHz and 1Mb/s.
The decoder successfully detects the sync pattern, but only about once a
minute when the pattern is transmitted once a second. And when the
decoder does detect the sync pattern, the data following the pattern is
inco
Hi!
I'm exploring GNU Radio in my master thesys in context of FM
reciever. Where could i get some recorded FM sample signals from
USRP?
Thanks!___
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http://lists.gnu.org/mailman/listinfo/discuss-gnuradi
Hi,
> On Sun, 3/29/09, slimchao wrote:
>
> Hi Firas,
>
> thanks! i am sure that a 4 Stage CIC Decimator is in the
> USRP FPGA DDC and 4x interpolation in the AD9860 (an interpolation rate
> of 4x is achieved using both interpolation filters). but how many Stage
> CIC Interpolator is in the F
On Sun, Mar 29, 2009 at 11:17 AM, Andrew Buck wrote:
> Hi,
>
> I'm trying to use a USRP to decode a CPFSK signal at 980MHz and 1Mb/s. The
> decoder successfully detects the sync pattern, but only about once a minute
> when the pattern is transmitted once a second. And when the decoder does
> det
yyzhuang wrote:
Hi All,
We are trying to set different modulation and demodulation schemes in
gnuradio example tunnel.py. The default is gmsk, which works fine. But when
we used -m dbpsk option, the two PCs can't ping each other (although after
ifconfig setup, both sender and receiver have outpu
On Sun, Mar 29, 2009 at 10:29 AM, Tom Rondeau wrote:
> I have used DBPSK and DQPSK fine with tunnel.py. You will probably have to
> play with the symbol rate, transmit power, and possibly the receiver
> acquisition loop settings.
In my experience, the acquisition loop settings are the most
sensi
Fatima Af wrote:
Hi,
I am working on a project on Cognitive radios. I want to achieve
real-time transmission n reception of audio between two USRP boards. The
biggest problems i am facing are in designing the flow graphs because of
data type mis matches. For example i am taking the audio input f
From:
Konkreets Bass
Subject:
[Discuss-gnuradio] recorded FM signal from USRP
Date:
Sun, 29 Mar 2009 18:38:23 +0300
User-agent:
Inbox.lv Webmail
> Hi!
>
> I'm exploring GNU Radio in my
master thesys in context of FM reciever. Where could i > get >some
recorded
Thanks for the response Brian. What you described is actually what I'm
currently doing: recording raw data to the hard drive and then
processing it later. The raw data that I recorded is jagged. That's
what I can't figure out. If the USRP can record HDTV data, what am I
doing wrong that I c
Thomas,
Thanks for your clearly presented question. Answers embedded below.
Thomas wrote:
Hi all,
I have been trying to get a simple DSB AM exercise working without
success. I'm sure I'm doing something fairly dumb, and I would really
appreciate any help you can offer.
I have two USRP's, e
On Sun, Mar 29, 2009 at 1:46 PM, Andrew Buck wrote:
> Thanks for the response Brian. What you described is actually what I'm
> currently doing: recording raw data to the hard drive and then processing it
> later. The raw data that I recorded is jagged. That's what I can't figure
> out. If the
Hi,
I'm pretty new in working with gnuradio. Could you please tell me a bit of
detail about how to change the symbol rate, transmit power, and receiver
acquisition loop (command line? the script code?) Thanks a ton!!
Yanyan
Tom Rondeau wrote:
>
> yyzhuang wrote:
>> Hi All,
>>
>> We are tryi
Tom Rondeau wrote:
> Fatima Af wrote:
>>
>> Regards
>>
>
> You probably need to adjust for the difference in dynamic range. Float's
> give you 32-bits and chars are only 8-bits, so you will likely be
> clipping a lot. You need to understand the data types to convert from
> the floating-point
Tom Rondeau wrote:
>
> I you want to know if the two blocks are reciprocals or each other, you
> can always look at the code. Neither of these blocks are very
> complicated.
>
> Tom
Sir,
I have tried using the float_to_char block and char_to_float bloack
simultaneously and tried to listen to s
yyzhuang wrote:
Hi,
I'm pretty new in working with gnuradio. Could you please tell me a bit of
detail about how to change the symbol rate, transmit power, and receiver
acquisition loop (command line? the script code?) Thanks a ton!!
Yanyan
We use OptionParser for all of our command-line a
adib_sairi wrote:
Eric Blossom wrote:
There is no documentation of that type for OFDM.
Eric
if i want to reconfigure the modulation for each sub-carrier (bit loading
for OFDM), can i just edit the ofdm benchmark python file? or i have to go
in detail until the IFFT and FFT? the OFD
Hi,
>From :
http://gnuradio.org/trac/wiki/ReportingErrors
Some GNU-Radio-specific things that we'll need to know are:
* What version of GNU Radio are you using?
* What operating system are you using? (Linux, BSD, Mac OS X, Windows, or
other? Which distribution? Which version? 32- or
Hi everyone,
I am trying to implement a transmitter receiver handshake in which the
transmitter first sends a 'Ready to send' and the receiver upon receiving it
sends a 'Clear to send' back. After this the TX is supposed to send data and
RX is supposed to receive it which they are not being able t
Thanks
Oh yes the "-m" specifies the mod and demod. But the modulation seems
related to some other parameters, which I can't see with the "-h" option. We
can change the rate by --bitrate, but how about transmit power, and receiver
acquisition loop?
BTW, does anybody have the correct parameters
On Fri, Mar 6, 2009 at 10:29 AM, Stefan Brüns
wrote:
> So d_phase gets incremented by d_freq on every incoming sample, and once every
> symbol.
>
> Any comments, is this actually a bug?
Yes. Your fix was applied to the trunk today as r10702.
Thanks!
Johnathan
___
I'm using an older version of GNU Radio. I don't have the exact version
number right now, but it's 2.x something. I'm using Ubuntu Linux 32-bit
on a Core Duo Dell laptop. I don't know the name of the USRP daughter
board I'm using, but it receives in the ~1GHz range that I'm working
with and
You are not seeing harmonics. You are seeing DC offset, which you have
not corrected for. Also, you seem to be transmitting a very low power
which results in your signal being below the DC offset level.
Matt
Quoc Lai wrote:
Hello,
I am a beginner with USRP. Please help with my problem
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