anybody have the correct parameters 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
>>
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
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 output
wrote:
>> On Thu, Mar 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&#x
ng the two 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
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
ou
know how 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
process crash and backtrace in
gdb. 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,
>>
>>
-0700, yyzhuang wrote:
>>
>> 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_buffe
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
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
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 tr
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 stre
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'
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 ch
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
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
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 :
B
Hi all,
Because if USB, USRP is limited in bandwidth. So do you know when USRP2 is
coming out please? Thanks.
Y
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___
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 Cat
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.
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?
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 = struct.unpac
of 11MHz) and it
> means you reduce 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.
>
>
rmance and range
> of activity.
>
> regards,
> 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 "
6e:64:20:73, time=16049016, rate=1 Mbps
PKT: len=1477, rssi=-13, src=20:61:6e:64:20:73, time=16061112, rate=1 Mbps
Thanks!
Brian Padalino wrote:
>
> On Mon, Jul 28, 2008 at 12:28 PM, yyzhuang <[EMAIL PROTECTED]> wrote:
>>
>> What does "combination of the LO in th
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
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 da
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
/adroitgrdevel/gr
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
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
>>
esearch right now. I've implemented a CSMA 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 sour
Jul 23, 2008 at 09:06:57AM -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 a
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:
>
>
to start would be be here (probably before you dive into
> the code):
> http://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
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 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
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