Re: [Discuss-gnuradio] Discuss-gnuradio Digest, Vol 140, Issue 9

[Marcus Müller]

Hi GSM voip,

thanks for letting us know!

Greetings,
Marcus

Just a side note:
Please do not answer to the Digest, but to the individual thread itself,
or open up a new one. It's fairly hard to understand what you are
referring to, otherwise.


On 10.07.2014 09:23, gsm voip wrote:
> On 09-Jul-2014, at 9:31 pm, address@hidden wrote:
>
>> Send Discuss-gnuradio mailing list submissions to
>>      address@hidden
>>
>> To subscribe or unsubscribe via the World Wide Web, visit
>>      https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>> or, via email, send a message with subject or body 'help' to
>>      address@hidden
>>
>> You can reach the person managing the list at
>>      address@hidden
>>
>> When replying, please edit your Subject line so it is more specific
>> than "Re: Contents of Discuss-gnuradio digest..."
>>
>>
>> Today's Topics:
>>
>>   1. Morse code (CW) decoder for GNURadio (Vanush Vaswani)
>>   2. Re: unable to install gnuradio-3.4.2 (Ralph A. Schmid, dk5ras)
>>   3. Re: No 'source' in Gnuradio Companion (Andre-John Mas)
>>   4. BER measurement for QAM transmission with USRP  wirelessly
>>      (Sun Wenbin)
>>   5. 'Counts' in WX Scope Plot (jsam45)
>>   6. Re: 'Counts' in WX Scope Plot (Marcus M?ller)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Tue, 8 Jul 2014 20:10:34 +1000
>> From: Vanush Vaswani <address@hidden>
>> To: "address@hidden" <address@hidden>
>> Subject: [Discuss-gnuradio] Morse code (CW) decoder for GNURadio
>> Message-ID:
>>      <address@hidden>
>> Content-Type: text/plain; charset=UTF-8
>>
>> Dear all, I am looking for a morse code decoder for gnuradio, does
>> anyone have a link?
>>
>> Regards
>> Vanush
>>
>>
>>
>> ------------------------------
>>
>> Message: 2
>> Date: Tue, 8 Jul 2014 11:19:24 +0200
>> From: "Ralph A. Schmid, dk5ras" <address@hidden>
>> To: 'Marcus M?ller' <address@hidden>,
>>      <address@hidden>
>> Subject: Re: [Discuss-gnuradio] unable to install gnuradio-3.4.2
>> Message-ID: <address@hidden>
>> Content-Type: text/plain; charset="iso-8859-1"
>>
>> Usually 3.4.2 is used when OpenBTS together with an USRP1 should work. BTDT
>> :)
> Yes correct Ralph, but when I am trying to install with downgraded python 
> (before it was up and running on 2.6 while 12.04 comes with 2.7 pre 
> installed) seeing lot of problems, I think main issue is with auto tools, as 
> I upgraded python to 2.7 again but did not ./bootstrap, but direct 
> ./configure, make and sudo make install, everything seems fine now
> Thanks guys
>>
>> Ralph.
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> From: address@hidden
>> [mailto:address@hidden On Behalf Of
>> Marcus M?ller
>> Sent: Monday, July 7, 2014 4:22 PM
>> To: address@hidden
>> Subject: Re: [Discuss-gnuradio] unable to install gnuradio-3.4.2
>>
>>
>>
>> Hello um, nameless!
>>
>> I could imagine that a lot of tools, possibly including py_compile have
>> changed significantly since 3.4.2 (October 2011), although you also are
>> using a strongly outdated Ubuntu, so things might still match.
>>
>> The problem is that most people on here are actively developing and using
>> recent versions of GNU Radio with state of the art operating systems, so it
>> might be hard for us to reproduce your issue. You should try to downgrade
>> your python and see if that helps, that's the only idea I can think of right
>> now. There was an issue that was fixed around mid-2011 with the automake
>> tools that revolved around the --destdir flag, but I can't really remember;
>> that fix should, however, be included in Ubuntu 12.04.
>>
>> There's too many things that changed since 3.4.2 since then. By the way: I'm
>> not totally clear why you actually would want to use 3.4.2; the build system
>> is intimidating compared to the current, CMake-based one, making error
>> search a lot more painful, and many aspects of GNU Radio should still be
>> compliant to 3.6.5, which is the preferred version to use if you're bound to
>> the old pre-3.7 API.
>>
>> All the best,
>> Marcus
>>
>>
>>
>> On 07.07.2014 15:36, gsmandvoip wrote:
>>
>> Hi list,
>> try to install older version of gnuradio (3.4.2 with gcc-4.4 on ubuntu
>> 12.04) but after successful make, when trying make install, getting
>> following errors:
>>
>>
>> test -z "/usr/local/lib/python2.7/dist-packages/gruel/pmt" || /bin/mkdir -p
>> "/usr/local/lib/python2.7/dist-packages/gruel/pmt"
>> /usr/bin/install -c -m 644 pmt_swig.py
>> '/usr/local/lib/python2.7/dist-packages/gruel/pmt'
>> ../../../py-compile: Missing argument to --destdir.
>> make[7]: *** [install-pmt_swig_pythonPYTHON] Error 1
>>
>>
>> tried on Google a lot but no luck, please point out whats going wrong
>> here???
>>
>>
>>
>>
>>
>>
>>
>> _______________________________________________
>> Discuss-gnuradio mailing list
>> address@hidden <mailto:address@hidden> 
>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>>
>>
>>
>> -------------- next part --------------
>> An HTML attachment was scrubbed...
>> URL: 
>> <http://lists.gnu.org/archive/html/discuss-gnuradio/attachments/20140708/9cacc6ec/attachment.html>
>>
>> ------------------------------
>>
>> Message: 3
>> Date: Tue, 8 Jul 2014 09:19:30 -0400
>> From: Andre-John Mas <address@hidden>
>> To: Martin Braun <address@hidden>
>> Cc: "address@hidden" <address@hidden>
>> Subject: Re: [Discuss-gnuradio] No 'source' in Gnuradio Companion
>> Message-ID: <address@hidden>
>> Content-Type: text/plain; charset="us-ascii"
>>
>>
>>> On 7 Jul 2014, at 18:18, "Martin Braun" <address@hidden> wrote:
>>>
>>>> On 07/07/2014 10:43 PM, Andre-John Mas wrote:
>>>> Hi,
>>>>
>>>> I have just installed gnuradio companion on MacOS X, by means of
>>>> MacPorts, in the hope of using it with rtl-sdr. The issue is I don't
>>>> see any 'source' item available for me to specify my input, when I
>>>> look at the right hand pane. Is there something I should have
>>>> configured or where I can find this?
>>> With Ctrl-F (or /) you can start a search. What kind of source are you
>>> looking for? The osmosdr/rtlsdr source? Do you have gr-osmosdr (and
>>> deps) installed?
>> Looks like that was my issue.  Installing the "gr-osmosdr" port solved this. 
>>
>> Thanks
>>
>> Andre
>>
>>
>>
>> ------------------------------
>>
>> Message: 4
>> Date: Wed, 9 Jul 2014 16:51:57 +0800
>> From: Sun Wenbin <address@hidden>
>> To: "address@hidden" <address@hidden>
>> Subject: [Discuss-gnuradio] BER measurement for QAM transmission with
>>      USRP    wirelessly
>> Message-ID: <address@hidden>
>> Content-Type: text/plain; charset="gb2312"
>>
>> Good day everyone,
>> Cool. Got it working. Thank you Vanush Vaswani for your reply.
>> By the way, does anyone knows how does QAM Mod takes in and QAM Demod output 
>> their data?
>>
>> Similarly i found out that they are both not identical but cant figure out 
>> how the data is formed.
>> Thanks for your time reading.
>> Regards,Sun
>>> From: address@hidden
>>> Date: Fri, 4 Jul 2014 18:53:21 +1000
>>> Subject: Re: [Discuss-gnuradio] BER measurement for GMSK transmission with 
>>> USRP wirelessly
>>> To: address@hidden
>>> CC: address@hidden
>>>
>>> GMSK Mod takes in packed bytes, Demod outputs unpacked bytes (e.g. 1
>>> bit per byte). You may need to perform a conversion. Best way to
>>> figure out is to post a screenshot of your flowgraph.
>>>
>>> On Fri, Jul 4, 2014 at 6:18 PM, Sun Wenbin <address@hidden> wrote:
>>>> Good day everyone,
>>>>
>>>> My sincere apology in advance if this question has been asked before, but i
>>>> tried search thru the archives but to no avail.
>>>>
>>>>
>>>> Currently, I am trying to calculate the BER for GMSK, But first I started
>>>> off on a perfect channel without USRP.
>>>>
>>>>
>>>> My current block diagram is as follows:
>>>>
>>>> "Random Source"
>>>> 0s and 1s, 10^6 windows -> "Throttle" -> "GMSK Mod (default settings)" ->
>>>> "GMSK Demod (default settings)" -> "Error Rate Block"
>>>>
>>>> I am feeding in "Error Rate block" with the random source and the "GMSK
>>>> Demod" Output.
>>>>
>>>> I am getting BER of 50%... Anyone knows what is wrong?
>>>>
>>>> In fact, I saved the input and output as binary files. I found out that 
>>>> they
>>>> are not very identical especially in terms of binary length. I tried input 
>>>> 9
>>>> bits of binary and I obtained 63 bits from the GMSK Demod Output.
>>>>
>>>> Is there something that is missing?
>>>>
>>>> Hope someone can advise me. Thank you :)
>>>>
>>>> Best Regards,
>>>> Sun
>>>>
>>>> _______________________________________________
>>>> Discuss-gnuradio mailing list
>>>> address@hidden
>>>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>>>>
>>                                        
>> -------------- next part --------------
>> An HTML attachment was scrubbed...
>> URL: 
>> <http://lists.gnu.org/archive/html/discuss-gnuradio/attachments/20140709/fce80b52/attachment.html>
>>
>> ------------------------------
>>
>> Message: 5
>> Date: Wed, 9 Jul 2014 02:09:30 -0700 (PDT)
>> From: jsam45 <address@hidden>
>> To: address@hidden
>> Subject: [Discuss-gnuradio] 'Counts' in WX Scope Plot
>> Message-ID: <address@hidden>
>> Content-Type: text/plain; charset=us-ascii
>>
>> The vertical axis in Scope Plot is labelled as Counts. What does it mean? How
>> is it related to the physical parameters of the signal like amplitude/power?
>>
>>
>>
>> --
>> View this message in context: 
>> http://gnuradio.4.n7.nabble.com/Counts-in-WX-Scope-Plot-tp49248.html
>> Sent from the GnuRadio mailing list archive at Nabble.com.
>>
>>
>>
>> ------------------------------
>>
>> Message: 6
>> Date: Wed, 09 Jul 2014 12:04:04 +0200
>> From: Marcus M?ller <address@hidden>
>> To: address@hidden
>> Subject: Re: [Discuss-gnuradio] 'Counts' in WX Scope Plot
>> Message-ID: <address@hidden>
>> Content-Type: text/plain; charset=ISO-8859-1
>>
>> Hi Joseph (hope that's the right name, if not, please correct me ;) ),
>>
>> well, GNU Radio is software defined radio; the data it processes are
>> simply numbers, so its unit is 1.
>> If your signal comes from an ADC, then it *might be* proportional to
>> Volts at the receiver; however, you usually do a lot of processing after
>> receiving, so using Volts as a unit is kind of wrong, because none of
>> the components consider these numbers to represent a voltage. If you
>> happen to square your signal, the display would be proportional to
>> power, instead, so there's no way to tell you "the scope sink displays
>> physical entity <insert>"; it all depends on what you let it display.
>>
>> I hope that helped a little,
>>
>> Greetings,
>> Marcus M?ller
>>
>> On 09.07.2014 11:09, jsam45 wrote:
>>> The vertical axis in Scope Plot is labelled as Counts. What does it mean? 
>>> How
>>> is it related to the physical parameters of the signal like amplitude/power?
>>>
>>>
>>>
>>> --
>>> View this message in context: 
>>> http://gnuradio.4.n7.nabble.com/Counts-in-WX-Scope-Plot-tp49248.html
>>> Sent from the GnuRadio mailing list archive at Nabble.com.
>>>
>>> _______________________________________________
>>> Discuss-gnuradio mailing list
>>> address@hidden
>>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>>
>>
>>
>> ------------------------------
>>
>> _______________________________________________
>> Discuss-gnuradio mailing list
>> address@hidden
>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>>
>>
>> End of Discuss-gnuradio Digest, Vol 140, Issue 9
>> ************************************************
>
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio