Hi,
I'm pretty new in working with gnuradio. Could you please tell me a bit of
detail about how to change the symbol rate, transmit power, and receiver
acquisition loop (command line? the script code?) Thanks a ton!!
Yanyan
Tom Rondeau wrote:
yyzhuang wrote:
Hi All,
We are trying
setting for DBPSK and DQPSK?
We are doing a project, the deadline is approaching. Thanks a lot.
Yanyan
Tom Rondeau wrote:
yyzhuang wrote:
Hi,
I'm pretty new in working with gnuradio. Could you please tell me a bit
of
detail about how to change the symbol rate, transmit power, and receiver
Hi All,
We are trying to set different modulation and demodulation schemes in
gnuradio example tunnel.py. The default is gmsk, which works fine. But when
we used -m dbpsk option, the two PCs can't ping each other. I looked through
the script
tb = my_top_block(mods[options.modulation],
Hi all,
We are planning to do different modulation schemes with tunnel.py in
gnuradio-example. In the script there's -m option to change the modulation.
We use sudo ./tunnel.py --freq 2.44G --bitrate 500k -m dbpsk -v, but the two
PC can't ping each other after virtual IP setup. This is the
19, 2009 at 08:50:13PM -0700, yyzhuang wrote:
I'm sorry.
If we do ./tunnel and ping between two boxes over the air, both tx and
rx
breaks after a few ICMP packets exchange. They don't break at the same
time
though, but it does happen every time. If we do over channel emulator
Is it possible a GNU Radio distribution problem? In the new lab we installed
the whole GNU Radio again. Thanks.
Yanyan
Eric Blossom wrote:
On Wed, Mar 18, 2009 at 10:36:17PM -0700, yyzhuang wrote:
Hi Eric,
We read through the code. gr_buffer is a circular/ring buffer, so when
reading
machines much longer,
but it still breaks.
Sorry again, no offense. I didn't mean to be rude or something.
Yanyan
Eric Blossom wrote:
On Thu, Mar 19, 2009 at 08:21:43PM -0700, yyzhuang wrote:
Is it possible a GNU Radio distribution problem? In the new lab we
installed
the whole GNU Radio
to increase the buffer size? Thanks.
Yanyan
Eric Blossom wrote:
On Thu, Mar 12, 2009 at 10:01:28AM -0700, yyzhuang wrote:
Hi Eric,
The command line: sudo ./tunnel.py --freq 2.44G --bitrate 500k -v (is
bitrate has something to do with buffer?)
I installed GNU Radio from here: svn co
http
. maybe I did something wrong that made the process doesn't crash... I'm
a newbie of gnu radio and gdb
Yanyan
Eric Blossom wrote:
On Thu, Mar 12, 2009 at 10:01:28AM -0700, yyzhuang wrote:
Hi Eric,
The command line: sudo ./tunnel.py --freq 2.44G --bitrate 500k -v (is
bitrate has
to another lab
(from computer science lab to ee lab). Will it because of the higher
interference in the busier channel that caused too many packets being queued
in the buffer, and caused the buffer over flow?
Thanks a ton.
Yanyan
Eric Blossom wrote:
On Wed, Mar 11, 2009 at 11:44:59PM -0700, yyzhuang
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 frequencies,
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
Hi,
I was trying to see what frequencies we can use USRP to tx and rx data, with
/gnuradio-examples/python/digital/benchmark_tx.py and benchmark_rx.py. 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
Hi everybody,
Right now I have 2 USRP (version 1) boxes, and did some experiments on
realtime video.
I first used tunnel.py in /gnuradio/gnuradio-examples/python/digital to set
up a virtual connection between two USRP boxes (by assigning non-existing IP
addresses to them). Then used VLC to
Hi all,
Several months ago I installed bbn 802.11 code and got it running. but today
when I wanted to download it in my new PC (according to what I've done
before http://gnuradio.org/trac/wiki/OtherCode)
cvs -d anon...@acert.ir.bbn.com:/cvs/adroitgrdevel co adroitgrdevel
the problem is
cvs
many thanks, George :)
Y
George Nychis wrote:
yyzhuang wrote:
Hi all,
Several months ago I installed bbn 802.11 code and got it running. but
today
when I wanted to download it in my new PC (according to what I've done
before http://gnuradio.org/trac/wiki/OtherCode)
cvs -d
we have 2 usrp boxes. 1 now doesn't work, only 2 works. we use 3 steps to
check if it is the hardware problem:
step 1) recognized by linux?
on good box:
lsusb
Bus 007 Device 001: ID :
Bus 005 Device 001: ID :
Bus 004 Device 001: ID :
Bus 003 Device 001: ID :
step 2) proper device driver loaded and device entry created in /dev ?
good box:
/dev/bus/usb$ ls -l
total 0
drwxr-xr-x 2 root root 100 2008-11-14 17:04 001
drwxr-xr-x 2 root root 60 2008-11-14 17:04 002
drwxr-xr-x 2 root root 60 2008-11-14 17:04 003
drwxr-xr-x 2 root root 60 2008-11-14 17:04
step 3) the control software access the device entry correctly?
good box
/gnuradio/gnuradio/gnuradio-examples/python/usrp$ ./usrp_benchmark_usb.py
Testing 2MB/sec... usb_throughput = 2M
ntotal= 100
nright= 999452
runlength = 999452
delta = 548
OK
Testing 4MB/sec... usb_throughput
Hi all,
Because if USB, USRP is limited in bandwidth. So do you know when USRP2 is
coming out please? Thanks.
Y
--
View this message in context:
http://www.nabble.com/When-is-USRP2-coming-out-please--tp18896715p18896715.html
Sent from the GnuRadio mailing list archive at Nabble.com.
BTW, when is USRP2 coming out?
Thanks.
Marcus Leech wrote:
I've been looking into USB 2.0 range extenders recently, in support of
my big-dish radio astronomy project. There's a company called
ICRON that has a Ranger 2101 product that allows you to extend USB 2.0
up to 100M with Cat5e
Hello,
In the BBN 802.11 package, I see the scripts for receiver, and some lines of
code for packet handling as well.
==
def rx_callback(ok, payload):
size = struct.calcsize(@qHBB);
packet_data = payload[size:];
hdr =
with it, is
unpack the packet according to its format enough?
Thanks again
Daniel Sumorok wrote:
At 04:33 PM 7/29/2008, yyzhuang wrote:
And what exactly the time is? As I see in the script, is it in ticks?
means the time instance, or the inter-arrival time?
time is a packet arrival timestamp
That's the point. But to unpack a packet, we have to know exactly its format.
Hope someone can tell what format of the packet is. And what information can
we get from the packets.
Thanks everybody =^D
Mason-29 wrote:
Quoting Y. Zhuang [EMAIL PROTECTED]:
Thanks very much for help. So
What does combination of the LO in the front end and the digital
downconverter mean please?
Eric Blossom wrote:
On Fri, Jul 25, 2008 at 10:11:34AM -0700, Y. Zhuang wrote:
http://en.wikipedia.org/wiki/List_of_WLAN_channels
Is it because the channel for 802.11 in 2.432G there, so the front
, 2008 at 12:28 PM, yyzhuang [EMAIL PROTECTED] wrote:
What does combination of the LO in the front end and the digital
downconverter mean please?
For general radio architecture, please see:
http://en.wikipedia.org/wiki/Superheterodyne
Generally, the LO/synthesizer has some discrete
,
hamed
Quoting yyzhuang [EMAIL PROTECTED]:
Thanks.
When I use ./bbn_80211b_rx.py -f 2.44G -v -b , no packets get printed
out.
But the output of ./bbn_80211b_rx.py -f 2.462G -d 8 -b -v is normal,
we
got a bunch of packets:
Bits Per Encoded Sample = 8
adc frequency = 6400
your signal strength.
BBN transmitter code doesn't use barker spreading. They use raised
cosine and its spreading factor (or gain) is less than 11. So receiver
doesn't have to cut the frequency and it works fine.
Did I get your question right?
Quoting yyzhuang [EMAIL PROTECTED
I see from here that IEEE 802.11 is really implemented
by BBN people http://gnuradio.org/trac/wiki/OtherCode
I downloaded and installed adroitgrdevel, ran some little tx and rx
scripts. It was cool that 2 boxes can talk to each other over the air
and one box can receive beacon from AP as well.
I'm not sure of the frequency so I tried
./bbn_80211b_rx.py -f 2.462G -d 8 -b -v
Bits Per Encoded Sample = 8
adc frequency = 6400
decimation frequency = 8
input_rate = 800
gain = 45.0
desired freq = 246200.0
baseband frequency 246000.0
dxc frequency -200.0
Samples per
; this is not a good area for beginners.
George Nychis wrote:
yyzhuang wrote:
Really thanks for the efforts. Surely more stuff will be added in the
future.
Maybe some day we can build up the entire protocol stack.
I think that GR has been great for PHY development and testing. If you
follow
I'm having the same problem as here http://www.ruby-forum.com/topic/87459
I got the code: cvs -d [EMAIL PROTECTED]:/cvs/adroitgrdevel co
adroitgrdevel
Then build it using bootstrap/configure/make/make install to the same prefix
as gnuradio(/usr/local)
I ran the python script in
As I see from the simple manual and some source code, most of the blocks are
designed for PHY layer or hard ware. Should all the MAC layer functions
implemented by python application, or are there any existing MAC layer
blocks we can use directly? Thanks for help.
Y
yyzhuang wrote:
Thanks
:57AM -0700, yyzhuang wrote:
As I see from the simple manual and some source code, most of the blocks
are
designed for PHY layer or hard ware. Should all the MAC layer functions
implemented by python application, or are there any existing MAC layer
blocks we can use directly? Thanks for help
and
TDMA MAC, but they're currently not available. Hopefully I can wrap
them up by the end of August and release them.
- George
yyzhuang wrote:
As I see from the simple manual and some source code, most of the blocks
are
designed for PHY layer or hard ware. Should all the MAC layer
Really thanks for the efforts. Surely more stuff will be added in the future.
Maybe some day we can build up the entire protocol stack.
George Nychis wrote:
yyzhuang wrote:
Thanks George. I'm still exploring Gnu Radio. Since I'm a student in
Computer
Science, I know very little about
://www.gnu.org/software/gnuradio/doc/howto-write-a-block.html
Jason
On Tue, Jul 22, 2008 at 12:07 AM, yyzhuang [EMAIL PROTECTED] wrote:
Please, I want to know about some details of blocks at
MAC and PHY layer. E.g., what kind of MAC modules or blocks that gnu
radio can provide us? I've read
Hi,
I'm a gnu radio newbie. Can anyone tell me how to see what kind of mac/phy
schemes gnu radio comes with, and what is the capacity of gnu radio? Or is
there any documentation about this?
Thanks.
Y
--
View this message in context:
there is any documentation about those blocks? Or
would you kindly tell me where I can find them in the source code
directory? Since I'm the only one in our group who is exploring gnu
radio, it's difficult to read or search without help of others. Thanks
for help.
yyzhuang wrote:
Hi,
I'm a gnu
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