Re: [Discuss-gnuradio] QAM demodulation state

[Tom Rondeau]

On Tue, Aug 2, 2011 at 7:53 PM, Tom Rondeau <address@hidden> wrote:
> On Mon, Aug 1, 2011 at 9:46 AM, Daniel Bartel
> <address@hidden> wrote:
>> Hi.
>>
>> I would like to use the Python package "packet_utils" for packet-oriented 
>> transmission in combination with a QAM modulation scheme.
>>
>> I figured out, that currently in GNU Radio no QAM demodulation is 
>> implemented. However I read in this mailing list, that a few people are 
>> working on it or did so in the past.
>> So my question is, what is the current state of QAM demodulation blocks for 
>> GNU Radio?
>>
>> Thanks and best regards,
>> Daniel
>
>
> I'm working on redoing our digital modulation work in GNU Radio. All
> digital modulation blocks (both C++ and Python) are getting moved to
> gr-digital. I'm also making more use of Ben Reynwar's work that he did
> a while ago on using constellation objects that provide a nice object
> representation of constellation and operations for how to handle them.
> I believe that this _should_ help in using QAM signals, although the
> code could probably use a lot of  optimization work to support these
> signals.
>
> You can view my progress at git://github.com/trondeau/gnuradio.git in
> the branch "digital." It's a work-in-progress, so nothing is
> guaranteed to work right now (like I've broken all of the digital
> examples). I hope to finish this up over the next few weeks and get it
> into or master branch.
>
> Tom

And by master branch, I meant next branch.

Tom