Hi,
Has anybody got this error when running tunnel.py in gnuradio-example (with
virtual IP addresses set up on two PCs and ping each other on this tunnel)?
./gr_buffer.h:125: unsigned int gr_buffer::index_add(unsigned int, unsigned
int): Assertion `s < d_bufsize' failed.
I got this problem on b
Dear ALL:
I am very new to gnuradio and USRP. I am trying to take multiple inputs from
a USRP using two Flex900 daughter boards.
I have come across multi-antenna examples. But they all require to use BASIC
Rx Boards. I am working on Flex900 boards. Is it possible that I can edit
the program to w
> I want to implement a GSM base station using gnuradio with USRP2.
I looked at doing this, and decided to use USRP1 for several reasons:
* It's a lot cheaper than a USRP2.
* You can buy a USRP1 today.
* It can handle all the daughter boards on one USRP.
* There's already code that wo
Hi all,
I want to implement a GSM base station using gnuradio with USRP2. I just
downloaded the latest development code of gnuradio and I have not got my
USRP2 yet(USRP2 seems not availabe now?). I think that there are some
useful modules for me to build a GSM base station, such as
gr-gsm-fr-vocod
From: Tushar Patel
To: discuss-gnuradio-requ...@gnu.org, j...@joshknows.com,
wcn_s...@googlegroups.com
Date: Wed, 11 Mar 2009 17:10:41 -0700
Subject: OFDM example
HI all,
I try to run OFDM example which is build in gnu-radio example packages.
Actually there is no READ ME file in it, so do not unde
Hi everyone,
We are right now connecting 2 USRP to a channel emulator for experimentation
purpose. We are wondering if we can split the Tx and Rx ports on RFX2400
daughter board, as we want to split the tx path and rx path. According to
the Ettus introduction, the daughter boards should have this
Thanks, now I can see why. Yes we are using RFX2400, but it seems not easy to
remove the ISM filter.
Jason Uher wrote:
>
>> The daughter board we are using is 2.3-2.9GHz transceiver. But benchmark
>> only
>> worked in some of the frequencies, like 2.36-2.49GHz. when I was trying
>> other frequ
Crystal clear.. :-)
thank you Tom
2009/3/11 Tom Rondeau
> On Tue, Mar 10, 2009 at 6:48 AM, Vincenzo Pellegrini
> wrote:
> > Thanks Tom,
> >
> > I had looked at it.
> > I still have a question.
> >
> > It looks to me like the blocks down the line receive data from the upper
> > ones and do not
On Wed, Mar 11, 2009 at 06:45:02AM -0700, David Adrian wrote:
> Thank you for the replies Eric!
>
> 1.You
> said about using file_sink , but in my case I do not think that will
> work because I need to make real time precessing of the signal. If I
> use files it will take to long.
> 2. My theses
> Which interface are you using to set the center frequency?
The "tune" method.
> If you use the "tune" method, it adjusts both the VCO on the
> daughterboard and the digital up/down converter giving a minimum step
> size of about 0.01 Hz.
OK, thanks. That's good to know.
Eric Blossom wrote:
On Wed, Mar 11, 2009 at 02:10:19PM -0500, Jason Uher wrote:
> I'm in the process of writing a basic block inherited from
> gr_sync_interpolator which uses the past values to do stuff.
>
> When the block first starts, the history is populated with zeros, is
> there some way to get a pointer to the
I'm in the process of writing a basic block inherited from
gr_sync_interpolator which uses the past values to do stuff.
When the block first starts, the history is populated with zeros, is
there some way to get a pointer to the history in the constructor so I
can change the initial values?
Thank
I'm also wondering about how to extract ethernet packet information, such as
timestamp. If anyone has any pointers to reference materials it would be
greatly appreciated.
Thanks,
Dan
-Original Message-
From: discuss-gnuradio-bounces+dcocuzzo=draper@gnu.org on behalf of Pham,
Thanh
On Wed, Mar 11, 2009 at 10:02 AM, E. Ornelas wrote:
>
> Hello!
>
> I'm new to GNU Radio and USRP.
>
> I've done this simple code below.
>
> class topBlock(gr.top_block):
> def __init__(self):
> gr.top_block.__init__(self)
>
> fftsize = 256
> udec
Tom,
I'm sorry if I was not clear enough.
On Tue, 2009-03-10 at 17:03 -0400, Tom Rondeau wrote:
> Please label your axes! I'm not sure what I'm looking at here. Also,
> from what I gather, you are doing a comparison, but you are using two
> different ranges in the x-axis. I am not at all clear wh
Hello!
I'm new to GNU Radio and USRP.
I've done this simple code below.
class topBlock(gr.top_block):
def __init__(self):
gr.top_block.__init__(self)
fftsize = 256
udecim = 256
mywin = window.blackmanharris(fftsize)
On Tue, Mar 10, 2009 at 6:48 AM, Vincenzo Pellegrini wrote:
> Thanks Tom,
>
> I had looked at it.
> I still have a question.
>
> It looks to me like the blocks down the line receive data from the upper
> ones and do noting with that data (so the state of block's local variable is
> frozen) but, I
On Tue, Mar 10, 2009 at 6:33 AM, Adi85 wrote:
>
> Still getting an error!
> thank you in advance
>
> class topBlock(gr.top_block):
>> def __init__(self):
>> gr.top_block.__init__(self)
>>
>> fftsize = 256
>> udecim = 256
>>
>> mywin = window.blackmanharris(fftsize)
>
Thank you for the replies Eric!
1.You
said about using file_sink , but in my case I do not think that will
work because I need to make real time precessing of the signal. If I
use files it will take to long.
2. My theses is about simulating
the acquisition of 2 signals (co-polar and cross-polar )
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