io/gr-digtial/python.
There are some discussions within this community before, just search it for how
to use it properly.
On Wed, May 29, 2013 at 10:07 PM, yeran wrote:
Hi Alex,
Thank you for your prompt reply!
But I don't quite understand what you said about FLL filter for CFO correct
wband
From: cingular.a...@gmail.com
To: yeran0...@hotmail.com
CC: discuss-gnuradio@gnu.org
So, actually, your code already has the freq recov block? If so, I really have
no idea on how to solve your problem.
On Wed, May 29, 2013 at 11:34 PM, yeran wrote:
Hi Alex,
I have rea
Hi everyone,
I'm trying to estimate the channel frequency response in narrowband in
benchmark. But the result I get looks like a sine wave. Anyone knows how to do
channel estimation in narrowband? And in GNU Radio and USRP transmission, when
the carrier frequency is added and taken off?
Thanks
And also, if I want to test the frequency at right after the usrp source and
after time_recov block at the receiver, what can I do?
Thanks!
From: yeran0...@hotmail.com
To: discuss-gnuradio@gnu.org
Date: Wed, 5 Jun 2013 14:47:26 +
Subject: [Discuss-gnuradio] time_recov and freq_recov in gener
Hi everyone,
I have a question in understanding the generic_mod_demod.py.
As I looked up from the documents, it was said that the signal after the usrp
source at the receiver, is baseband signal, whose central frequency is around 0
Hz, and already take off the carrier frequency. But in the demod
Hi everyone,
I'm using benchmark to do experiment in gun-radio. But at the receiver side, I
met this problem sometimes, the terminal says " z = sa ^
random_mask_vec8[o:len(sa)+o]. ValueError: operands could not be broadcast
together with shapes (4087) (4081)."
I tried to print the whiten par
Hi everyone,
I'm trying to learning the algorithm of the correlator in generic_mod_demod.py.
Then use the similar algorithm in my own block.
In the file digital_correlate_access_code_bb.cc, according to my understanding,
the original algorithm is compare each bit of the 8-Byte access code with
will output 0x3 every time it finds
pattern that differs from given preamble at max. k bits. Maybe you can provide
some more information. In my designs I usually use threshold 0.
Best
Nemanja
On Wed, Jun 19, 2013 at 10:21 PM, yeran wrote:
Hi everyone,
I'm trying to lea
Hi everyone,
In benchmark, the packet is 23-byte long, inclues preamble, access code,
header, payload, crc, and 'x55'. Now I want to add a one-byte flag after the
header. I changed the packet_utils.py make_packet block, add a flag when form
the new packet. And changed the header length to 9. H
Hi everyone,
I have a question about benchmark decoding. I'm using bpsk mod and demod.
In order to understand what's happening in the demodulation process, I added a
file sink after time_recov block and after unpack block respectively. According
to my understanding, the receiver block does the
Hi Dear All,
Recently, I've been working with benchmark_rx.py in narrowband. I'm using bpsk.
I don't really understand what happens in the demodulator.
In the generic_mod_demod.py, the receiver block act as the constellation or
mapping function. Previously, I thought for bpsk, it is just if th
decoding
result. do u have any clues about that?
Thanks!
> From: t...@trondeau.com
> Date: Wed, 17 Jul 2013 12:51:24 -0400
> Subject: Re: [Discuss-gnuradio] decode problem in benchmark
> To: yeran0...@hotmail.ciom
> CC: discuss-gnuradio@gnu.org
>
> On Mon, Jul 15, 2013 at
Discuss-gnuradio] constellation algorithm at benchmark
> From: nathan.w...@okstate.edu
> To: yeran0...@hotmail.com
> CC: discuss-gnuradio@gnu.org
>
> On Wed, Jul 17, 2013 at 11:20 AM, yeran wrote:
> > Hi Dear All,
> >
> > Recently, I've been working with be
13 12:51:24 -0400
> Subject: Re: [Discuss-gnuradio] decode problem in benchmark
> To: yeran0...@hotmail.ciom
> CC: discuss-gnuradio@gnu.org
>
> On Mon, Jul 15, 2013 at 4:50 PM, yeran wrote:
> > Hi everyone,
> >
> > I have a question about benchmark decoding. I
know how does the joint decode work?
Thanks and look forward to your reply! :)
Ada
> Date: Wed, 17 Jul 2013 23:54:00 -0400
> Subject: Re: [Discuss-gnuradio] decode problem in benchmark--NCO?
> From: nathan.w...@okstate.edu
> To: yeran0...@hotmail.com
>
> On Wed, Jul 17, 2013 at
Hi everyone,
I'm doing a project on joint decode. But my problem is that in the lab
environment, the benchmark transmission is always good, there are hardly any
packet loss, so I can not show the advantage of joint decode.
I've tried to change the physical distance from transmission to receiv
Hi all,
I am trying to study STBC using USRP2 and have some questions about how to use
mimo cable.
I followed the instruction on ettus but i dont understand 'Configuring the
slave' part
http://files.ettus.com/uhd_docs/manual/html/usrp2.html#using-the-mimo-cable
Configuring the slave
In ord
ants & PSK/QAM and observe performance.
-Adeel
On Tue, Jul 23, 2013 at 9:25 PM, yeran wrote:
Hi everyone,
I'm doing a project on joint decode. But my problem is that in the lab
environment, the benchmark transmission is always good, there are hardly any
packet loss, so I can not show the
Hi everyone,
I'm using gnu radio benchmark to do experiment. I want to test under different
modulation, BPSK, DBPSK, DQPSK all works well, but there seems to be some
problem in QPSK. I also asked some lab mates, they also face this problem.
Anyone come across this problem, how did you deal with
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