Hi,
just a different suggestion - have you tried to determine if there is a
frequency offset between the receiving and the sending USRP? I did some tests
with the digital/benchmark_?x.py / qpsk code before the recent changes, but
for me it worked quite well when I adjusted the center frequency
On Sat, Dec 6, 2008 at 12:29 PM, Bill Stevenson
<[EMAIL PROTECTED]> wrote:
> Johnathan, could you tell me the detailed configurations of your setup, for
> example, which demo files were you using, what were the arguments you used
> for your transmission? I also hope the data I got is useful for yo
From: Bill Stevenson <[EMAIL PROTECTED]>
To: Johnathan Corgan <[EMAIL PROTECTED]>
Cc: discuss-gnuradio@gnu.org
Sent: Thursday, December 4, 2008 9:57:02 PM
Subject: Re: [Discuss-gnuradio] a report on dqpsk modulation
From: Johnathan Corgan <[EMAIL PROTECTED]>
To: Bill Stevenson <[EMAIL PROTECTED]>
Cc: discuss-gnuradio@gnu.org
Sent: Thursday, December 4, 2008 6:25:24 PM
Subject: Re: [Discuss-gnuradio] a report on dqpsk modulation in gnuradio
On Thu, Dec 4, 200
On Thu, Dec 4, 2008 at 1:04 PM, Bill Stevenson
<[EMAIL PROTECTED]> wrote:
> -r 400k -s 1500: 50% of the transmitted packets are received, but 0 right.
For comparison purposes, can you try using the GMSK modulation? Just
remove the '-m dqpsk' from the command line.
-Johnathan
_
From: Johnathan Corgan <[EMAIL PROTECTED]>
To: Bill Stevenson <[EMAIL PROTECTED]>
Cc: discuss-gnuradio@gnu.org
Sent: Wednesday, December 3, 2008 2:57:55 PM
Subject: Re: [Discuss-gnuradio] a report on dqpsk modulation in gnuradio
Thank you, John
On Mon, Dec 1, 2008 at 1:07 PM, Bill Stevenson
<[EMAIL PROTECTED]> wrote:
> python benchmark_tx.py -f 2479M -r 2000k -m dqpsk -s 100 (-s 800 or -s 1500)
> python benchmark_rx.py -f 2479M -r 2000k -m dqpsk
What is the CPU type and speed you are using? In my experience, data
rates above about 500
From: Johnathan Corgan <[EMAIL PROTECTED]>
To: Bill Stevenson <[EMAIL PROTECTED]>
Sent: Thursday, November 27, 2008 3:02:23 AM
Subject: Re: [Discuss-gnuradio] a report on dqpsk modulation in gnuradio
No problem, Johnathan. After reading th
From: Johnathan Corgan <[EMAIL PROTECTED]>
To: Bill Stevenson <[EMAIL PROTECTED]>
Cc: discuss-gnuradio@gnu.org
Sent: Wednesday, November 26, 2008 9:28:05 AM
Subject: Re: [Discuss-gnuradio] a report on dqpsk modulation in gnuradio
On Tue, Nov 25,
From: Johnathan Corgan <[EMAIL PROTECTED]>
To: Bill Stevenson <[EMAIL PROTECTED]>
Cc: discuss-gnuradio@gnu.org
Sent: Wednesday, November 26, 2008 9:28:05 AM
Subject: Re: [Discuss-gnuradio] a report on dqpsk modulation in gnuradio
On Tue, Nov 25,
On Tue, Nov 25, 2008 at 8:46 PM, Bill Stevenson
<[EMAIL PROTECTED]> wrote:
> Thank you, Johnathan. Anyway, I would like to use svn and download the fixed
> code from the trunk software! Do I just need to type in the command:
>
> $ svn co http://gnuradio.org/svn/gnuradio/trunk gnuradio
> in the ter
From: Bill Stevenson <[EMAIL PROTECTED]>
To: Johnathan Corgan <[EMAIL PROTECTED]>
Cc: discuss-gnuradio@gnu.org
Sent: Tuesday, November 25, 2008 11:43:30 PM
Subject: Re: [Discuss-gnuradio] a report on dqpsk modulation
From: Johnathan Corgan <[EMAIL PROTECTED]>
To: Bill Stevenson <[EMAIL PROTECTED]>
Sent: Tuesday, November 25, 2008 11:29:06 PM
Subject: Re: [Discuss-gnuradio] a report on dqpsk modulation in gnuradio
On Tue, 2008-11-25 at 18:43 -0800, Bill Ste
On Tue, 2008-11-25 at 20:29 -0800, Johnathan Corgan wrote:
> On Tue, 2008-11-25 at 18:43 -0800, Bill Stevenson wrote:
>
> > OMG!!! Thank you for your information, it will be really helpful!!! I
> > will update my code soon. For updating, do I just need to download the
> > gnuradio-3.1.3.tar.gz and
- Forwarded Message
From: Bill Stevenson <[EMAIL PROTECTED]>
To: Johnathan Corgan <[EMAIL PROTECTED]>
Sent: Tuesday, November 25, 2008 9:43:28 PM
Subject: Re: [Discuss-gnuradio] a report on dqpsk modulation in gnuradio
From: John
- Forwarded Message
From: Bill Stevenson <[EMAIL PROTECTED]>
To: Zenny Zhang <[EMAIL PROTECTED]>
Sent: Tuesday, November 25, 2008 9:47:40 PM
Subject: Re: [Discuss-gnuradio] a report on dqpsk modulation in gnuradio
From: Zenny Z
On Tue, 2008-11-25 at 14:55 -0800, Bill Stevenson wrote:
> Is the dqpsk modulation scheme in gnuradio working fine?
Bill, there was a recent (yesterday) update to the qpsk demodulator code
that fixed an issue with the carrier offset tracking. Could you please
update to the most recent trunk code
Hello, everyone!
I am working on using USRP to realize mutirate transmission. I have spent these
two days trying to transmit data with dqpsk modulation scheme, and the file I
used is python/digital/benchmark_tx.py and benchmark_rx.py. Below is the
conclusion I could reach based on the data I go
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