Hi all-
I am relatively new to the list but I have been reading and watching
since 2005. Only recently have I been able to start using GNU radio to
do any "serious" work here at Mitre. The biggest issue that everyone
here complains of is documentation, so seeing the topic come up I had
to put my
more two cents
I love Matlab and I use it every day but there is a time and a place
for it and it is not as an computational engine for a software defined
radio. Signal processing for an SDR is just not the right use for it.
It just can't keep up. If you were generating complied code in simulink
f
I could be wrong but I believe that block can work with a complex input
or a real input. For the case of GMSK/MSK it should work on a real
signal derived from the change in phase of the IQ(use
gr_quadrature_demod_cf) not the IQ itself as is the case in regular
QPSK. I believe the GMSK demo shows th
, April 11, 2008 1:15 PM
To: Long, Jeffrey P.
Cc: discuss-gnuradio@gnu.org; Thomas Schmid
Subject: Re: [Discuss-gnuradio] M&M impl, its parameters,and why does
it work for GMSK?
Thanks for the response.
You're correct, it can work with complex or real input. GMSK and the
MSK implementation
While we are on the topic of clock recovery and someone more
knowledgeable than me is reading :) I would like to pose a question to
Bob. How might one do clock recovery on a M-ary CPM signal? It sounds
like a ML sequence technique might be an option but is there a simpler
ad-hoc technique that work
Thanks I will take a look.
Jeff
-Original Message-
From: Bob McGwier [mailto:[EMAIL PROTECTED]
Sent: Friday, April 11, 2008 2:09 PM
To: Long, Jeffrey P.
Cc: George Nychis; gnuradio mailing list
Subject: Re: [Discuss-gnuradio] M&M impl, its parameters, and why does
itwork for
Kind of looks like it is clipping to me and possibly some DC offset
problems.
-Jeff
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
George Nychis
Sent: Tuesday, April 29, 2008 10:13 AM
To: Eric Blossom
Cc: discuss-gnuradio@gnu.org
Subject: Re: [Discuss-
-Original Message-
From: George Nychis [mailto:[EMAIL PROTECTED]
Sent: Tuesday, April 29, 2008 11:10 AM
To: Long, Jeffrey P.
Cc: Eric Blossom; discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] help with tuning RFX2400 MIMO_b,weird
RX results
I'm getting a little closer...
Steven-
Did you actually find that the decision threshold needs to be biased? I
actually implemented the 2 bit differential detector on a custom asic
that was targeted at streaming audio(in 2004) and during the
simulations I found that moving the bias point did very little for
performance. Maybe i
I agree with Steven, while there are definitely more "optimal"
solutions like MLSE they don't always make sense for every application.
GSM phones and the like have dedicated DSP resources to run a Viterbi
algorithm but is this doable on the typical gnu users computer? I will
defer to the experts on
Clark [mailto:[EMAIL PROTECTED]
Sent: Friday, June 06, 2008 12:27 PM
To: Long, Jeffrey P.
Cc: gnuradio mailing list
Subject: Re: [Discuss-gnuradio] Posted: Enhanced GMSK demodulator
On Fri, Jun 6, 2008 at 9:30 AM, Long, Jeffrey P. <[EMAIL PROTECTED]>
wrote:
> Steven-
>
> Did you ac
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