Hi,
Does this happen to anyone using BBN code (USRP2 version) with
gnuradio-3.3.0, that only when I set the decimation factor to 4, I see the
most of the beacon messages sent from the APs around the lab at 1Mbps
captured, otherwise, I hardly see half of the beacons sent (I compare the
capture
Hello list,
I have been fiddling around with USRP2 version of BBN code for a week now.
First, one observation I found is: if and only if I set decimation to 4
(i.e., 25Msps), I see almost all of the 1Mbps packets sent by my 802.11
sender. This includes data packets (1400 bytes payload), and
2. I am using XCVR2450 with USRP2. I initially just wanted to find out
which
antenna (J1 or J2 -- connected to RF2 and RF1 in my USRP2 respectively),
was
defined to be RX and which one to be TX? I found out from a file
db_xcvr2450.cc that J1 was defined to be RX and J1-TX, however with my
On Thu, Nov 18, 2010 at 3:43 PM, Josh Blum j...@joshknows.com wrote:
Thank you for your answers. For this second answer, I didn't understand
your reply. The link you sent does not say anything about how to set the
TX/RX to J1/J2. It just says it could be set to either one. My question
is,
I have two small questions...
1. I successfully installed UHD (gr-uhd) following the guide
http://www.ettus.com/uhd_docs/manual/html/usrp2.html;
But now, I want to be able to switch back and forth between the UHD and
Raw-Ethernet Driver. Do I need to uninstall the UHD, or just using
Hello,
I am using USRP2 version of BBN code to look at AP beacons as seen by the
USRP2 host. There is lots of S printing going on, which keeps me from
reading AP beacon information from STDOUT (unless I save the output to a
file, which I prefer not to). Is there anyway to enforce the printing of
beacons?
Thank you once again.
On Thu, Nov 11, 2010 at 5:47 PM, Eric Blossom e...@comsec.com wrote:
On Thu, Nov 11, 2010 at 04:57:56PM -0500, Bishal Thapa wrote:
Hello,
I am using USRP2 version of BBN code to look at AP beacons as seen by
the
USRP2 host. There is lots of S printing
Quick Question..
Is there a reason you do not want to use time.sleep(). Just curious?
On Sun, Aug 29, 2010 at 8:27 PM, Venkat Vinod venkatvi...@gmail.com wrote:
Hello All,
I am having some difficulties implementing a cognitive receiver program
that involves dynamically reconfiguring the
Hi GNURadioers,
I have a quick question. I am trying to use USRP running gnuradio-3.3.0
with two daughterboards... RFX2400. I am going to use one daughterboard to
receive and another to transmit. Do I use the standard firmware that is
loaded by default, std_2rxhb_2tx.rbf or is there a
at 3:45 AM, Bishal Thapa bdarealt...@gmail.com wrote:
Hi GNURadioers,
I have a quick question. I am trying to use USRP running gnuradio-3.3.0
with two daughterboards... RFX2400. I am going to use one daughterboard to
receive and another to transmit. Do I use the standard firmware
Great. Thank you. Just wanted to double check.
On Sun, Jul 25, 2010 at 2:48 PM, Thomas Tsou tt...@vt.edu wrote:
On Sun, Jul 25, 2010 at 12:45 AM, Bishal Thapa bdarealt...@gmail.com
wrote:
Hi GNURadioers,
I have a quick question. I am trying to use USRP running gnuradio-3.3.0
with two
Hi,
I have one last question for today :). I have a GNURadio Python
application that runs two gr.top_block() flow graphs simultaneously on two
different daughterboards (RFX2400). My dream is that B is running forever
(using B.run()) sending a continuous series of complex numbers with the
B.connect(gr.vector_source_c([],True), B.multiply_const_cc(), usrp_sink_c).
Sorry
On Sun, Jul 25, 2010 at 5:22 PM, Bishal Thapa bdarealt...@gmail.com wrote:
Hi,
I have one last question for today :). I have a GNURadio Python
application that runs two gr.top_block() flow graphs
wrote:
On Sun, Mar 07, 2010 at 04:07:58PM -0500, Bishal Thapa wrote:
Thank you for your reply Eric.
I did print delta and delta.microseconds and guess what I did get this:
Receiver (0) = BABA0002
Requested RX Bitrate: 100k
Probe Level 39
0:00:00.000327 [*This is from printing delta*]
327
Hi,
I have an interesting observation to share, and I want to see if anybody
can help me shed some light. When I measure time in python in the following
way:
t1 = datetime.now()
self.start()
t2=datetime.now()
diff = t2.microsecond - t1.microsecond
print Difference %d, diff
I get very different
not get 309us? I am sorry if I don't get something
fundamental here. Thanks again for helping me out :)
On Sun, Mar 7, 2010 at 3:15 PM, Eric Blossom e...@comsec.com wrote:
On Sun, Mar 07, 2010 at 02:05:12PM -0500, Bishal Thapa wrote:
Hi,
I have an interesting observation to share, and I
Hi,
I have a quick question regarding the complex binary samples captured by
using usrp_rx_cfile.py. I would like to draw them against time. So,
(Magnitude on Y-axis and Time on X-axis) in matlab. I was able to do the
following
1. ./usrp_rx_cfile.py -f 2.5G capture.dat
2. d =
Sorry, if I emailed this twice. I was confused if I had to subscribe to the
list first, before I could post questions. It was not clear from the website
http://www.gnu.org/software/gnuradio/mailinglists.html
--My
Dear GNURadioers,
I am doing some experiment to calculate BER (Bit error rate) with GNuradio
version 3.2.2 on Ubuntu 9.04. I run sender and receiver using two programs
as follows:
1. Receiver:
./benchmark_rx.py -f 2.5G -d 128 -m dbpsk
2. Sender:
./benchmark_tx.py -f 25G -i 256 -m dbpsk
packet loss.
Tim
Bishal Thapa wrote:
Dear Eric, Jonathan, List
I am stuck in a simple problem, and I am wondering if I understand what
-B FUSB_BLOCK_SIZE and -N FUSB_NBLOCKS options do, then it MIGHT help a
little bit.
I am using benchmark_tx.py to send a payload of size 102 bytes
Dear Thomas and Tim,
Thank you for replying all my questions previously. I have another
question for the list. Hope you don't mind. I wrote a demod for dbpsk. I had
to because I am spreading/despreading packets using dbpsk modulation. DBPSK
demod turned out pretty easy, except I committed a
Dear Eric, Jonathan, List
I am stuck in a simple problem, and I am wondering if I understand what
-B FUSB_BLOCK_SIZE and -N FUSB_NBLOCKS options do, then it MIGHT help a
little bit.
I am using benchmark_tx.py to send a payload of size 102 bytes, but with
added header, CRC, padded 0x55s it
Dear list,
I have a question. I just want to make sure I am not hallucinating infront
of my comp here. I run this script as follows:
1. ./usrp_rx_cfile.py -f 2.4G -d 128 foo.dat @ the receiver
= I get, the bitrate set to 500k
But, when I run this script as follows:
2. //benchmark_rx.py -f 2.4G
Dear list,
I have one question regarding the samples captured using usrp_rx_cfile.py
at the receiver. Is there anyway that I let the usrp_rx_cfile.py run
forever, and it will keep on capturing samples through USRP forever, while I
keep on taking out 10K samples (lets say) at a time from that
Dear Michael and Jakub,
I was working on the similar problem. What about using two TX daughter
boards in the same motherboard, and BOTH TRANSMITTING signals
simultaneously, one from each daughter board, but in an overlapped
fashion. Is it easily possible? What I mean is, I would like to have two
Dear all,
Please help me understand this output from usrp_rx_cfile.py. I have
attached the plot as the jpeg at the end:
1. I send a file with 1500 bytes of spaces (Space = 0x20 = 0010 in
binary)
2. I use usrp_rx_cfile.py to capture the samples, and focus in on roughly
24600 samples
Hi,
I am a newbie to Matlab and less experienced (not a newbie anymore :)) in
GNUradio. I have a quick question. How can I load rx_unpack.dat in the
Matlab. The simple load function didn't work. Most probably it is because,
it has to be read in one byte at a time format? Thank you.
Hi All,
I am using ./benchmark_tx.py -f 2.4G to send some bytes from my own input
file, and using ./usrp_rx_cfile -f 2.4G to receive the downconverted complex
baseband samples. The modulation I am using on the sender side is dbpsk.
Then, I use
read_complex_binary.m to read the samples into the
Dear Gnuradio,
I had two questions..I did spend some time searching for my answers in the
mailing list and couldn't find if already discussed solutions. Please
forgive if so.
Q.1. TX side: I simply want to take a packet and XOR each bit of the packet
with a PN-code (hint: final goal will be to
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