I would like to know the best way to test the benchmark_tx.py and
benchmark_rx.py files.
These files are located in the /usr/share/gnuradio/examples/digital/ofdm
directory.
My goal is to transmit a jpg file from one USRP 2 device to another one and
have the jpg file saved on the host
I would like to know the best way to test the benchmark_tx.py and
benchmark_rx.py files.
These files are located in the /usr/share/gnuradio/examples/digital/ofdm
directory.
My goal is to transmit a jpg file from one USRP 2 device to another one and
have the jpg file saved on the host
Hi
When I try to establish the duplex comunication between two USRPs, I found
that if I put the code A infront of code B, only the transmitter works, but
if I put code B infront of code A, only receiver works.
Could anyone tells me the reason?
Thanks a lot!
code A:
self.source =
This is your third time sending the same email that was already
answered by Alex Zhang
(https://lists.gnu.org/archive/html/discuss-gnuradio/2013-01/msg00507.html).
If Alex's answer was unsatisfactory you will have to provide some more detail.
On Fri, Feb 1, 2013 at 2:02 PM, Dong Wang
Hi
When I try to establish the duplex comunication between two USRPs, I found
that if I put the code A infront of code B, only the transmitter works, but
if I put code B infront of code A, only receiver works.
Could anyone tells me the reason?
Thanks a lot!
code A:
self.source =
Try use different frequency for transmitter and receiver.
On Thu, Jan 31, 2013 at 8:51 PM, Dong Wang kingeas...@gmail.com wrote:
Hi
When I try to establish the duplex comunication between two USRPs, I found
that if I put the code A infront of code B, only the transmitter works, but
if I
Hi
When I try to establish the duplex comunication between two USRPs, I found
that if I put the code A infront of code B, only the transmitter works, but
if I put code B infront of code A, only receiver works.
Could anyone tells me the reason?
Thanks a lot!
code A:
self.source =
Hi Josh,
The tone test works. And I have tried to use different antennas. The
following is the result:
https://docs.google.com/spreadsheet/ccc?key=0AiMWTi1wVxJedDBKNEdhaUFNSkNfdTJ6LUtjenZkTWcpli=1#gid=1
The results are very different even with same antennas. The n_rcvd/n_right
is 626/623, and
On 08/08/2012 10:31 AM, Weixian Zhou wrote:
Hi Josh,
The tone test works. And I have tried to use different antennas. The
following is the result:
https://docs.google.com/spreadsheet/ccc?key=0AiMWTi1wVxJedDBKNEdhaUFNSkNfdTJ6LUtjenZkTWcpli=1#gid=1
The results are very different even with
On 08/03/2012 03:45 PM, Weixian Zhou wrote:
I run benchmark_tx in USRP A, and benchmark_rx in USRP B:
A: ./benchmark_tx.py -f 2.46G -r 0.5M --tx-gain=-30
B: ./benchmark_rx.py -f 2.46G -r 0.5M
The n_right/n_recvd is 549/628.
But when I rx in USRP A and tx in USRP B with the same parameters,
I run benchmark_tx in USRP A, and benchmark_rx in USRP B:
A: ./benchmark_tx.py -f 2.46G -r 0.5M --tx-gain=-30
B: ./benchmark_rx.py -f 2.46G -r 0.5M
The n_right/n_recvd is 549/628.
But when I rx in USRP A and tx in USRP B with the same parameters, the
n_right/n_recvd is always pretty bad: 0/275.
Thank you so much Tom for your quick response.. yes i have found the code
scripts in gnurdio-examples/python/ofdm.
But iam not sure how to implement this code to make simulation in GNU radio.
could you please explain in bit detail how to use this code to make the
tranmission and reception blocks
Hello Tom,
Thank you so much Tom for your quick response.. yes i have found the code
scripts in gnurdio-examples/python/ofdm.
Please help me to implment this in GRC. i dont know how to use this code to
make simulation blocks in SDR.. where i have to put this code to make
simulation ? i am
Hi Everyone/Smith,
I am doin my M.Sc. project on OFDM Implementation in GNU RADIO (SDR) via
USRP.
I am quite new to GNU Radio i dont know much about its functions. I am
looking for benchmark_ofdm.py file that i can use to implement the design n
GNU radio and later on transmit and recieve via
Thank you so much Tom for your quick response.. yes i have found the code
scripts in gnurdio-examples/python/ofdm.
But iam not sure how to implement this code to make simulation in GNU radio.
could you please explain in bit detail how to use this code to make the
tranmission and reception blocks
Hi everyone,
I am working on OFDM in gnuradio. I ran the benchmark_ofdm.py file.
Everything worked well, I want to ask one thing that I didn't see the last
packet on the terminal.
I set the packet size to 400 bytes and total number of bytes to be
transmitted to 1600. I should see 4 packets but i
All,
I am testing 2x USRP1 with RFX2400 daughter cards with benchmark_rx and
benchmark_tx scripts and have questions.
When I set the MCS to dbpsk, error rate I got was close to zero.
When I set it to dqpsk, d8psk, error rate is 100%.
When I set it to gmsk, certain daughter cards had close to 0
MHz reference input.
You could also the use the 1 PPS input for your two USRPs.
Let me know if this helps.
Steve
--- On Mon, 1/10/11, Thomas H Kim thomas.h@aero.org wrote:
From: Thomas H Kim thomas.h@aero.org
Subject: [Discuss-gnuradio] Benchmark scripts
To: discuss-gnuradio@gnu.org
Make a simple little FFT sink in GRC and use it on one of the USRPs to
determine the received signal offset from the other USRP while it is
transmitting. Or receive a signal from a signal generator of known
frequency and note the offset for both USRPs. Or transmit a signal from
each USRP and
Hello all, I've got a GNURadio install on two laptops, both of which have
version 3.3.0 on them. They are both Dell Latitudes E5500 with Ubuntu 9.10
x86 on them. I have two USRP2s with the correct firmware installed on the SD
cards to operate the WBX daughter card (txrx_wbx_raw_eth_20100608.bin).
On Wed, Apr 28, 2010 at 1:59 AM, William Pretty Security Inc
bill.pre...@xplornet.com wrote:
Is there some bench mark I can run to test the USB and CPU loading ?
Apparently there is a problem with usrp_benchmark_sub.py …
Some basic tests for USRP operation.
usrp_fft.py -d 8
On 04/28/2010 11:17 PM, William Pretty Security Inc wrote:
Hi All;
As Marcus and others suggested I ran usrp_fft.py and dialed back the
decimation until I got overflows.
You were correct Thomas. The minimum decimation turned out to be 8. I
also created my own usrp_fft.grc and ran it as
Is there some bench mark I can run to test the USB and CPU loading ?
Apparently there is a problem with usrp_benchmark_sub.py .
I ran the wideband FM receiver flow graph in GRC and took some screen shots.
Any suggestions ??
Bill
___
Please check line 113 of benchmark_tx.py
data = (pkt_size - 2) * chr(pktno 0xff)
Therefore, only the LSB 8 bit of pktno is transmitted in the payload.
And please note 257=0x0101, 514=0x0202. So they are payload contents for
packet 1 and 2, respectively.
You've just missed packet 0. Not quite
nbsp;nbsp;nbsp;nbsp;nbsp;nbsp; Thanks again for
replies..
nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp;I'm looking for
transmitted data (dbpsk mod).For instance (package_size=1500) when pktno=0
(first loop) package should contain 1498 'x00' and package no. At the
receiver side i'm looking into the package
Thanks for your reply..
I got the point about package format and where the actual data is. But in
the transmitter side i want to create my own data in a file and send it by
using --from-file option but what should be the extension of this file?
Best Regards..
Merve
Hello..
I'm trying to make dbpsk modulation using benchmark tx/rx(two usrp1s(RFX
1800) and two computers).I set costas alpha to 0.05 and gain mu to 0.001
as advised here.When i run the codes i got ok=True for all packages and
pktno increases one by one every packet is received properly.But i
Hi Merve,
benchmark_rx.py only extracts the first two bytes of the received data
payload[0:2], which contains the packet number (pktno) and ignores the
rest. You need to insert some code into the function 'rx_callback' [line
61-70] in order to show or use the rest of data, payload[2:].
Kyle
Hi everyone,
I'm trying to establish communication between two USRP2 using
benchmark example. The command ./benchmark_tx.py -f 2.4G -r 500k
doesn't work: USRP2 can not correctly decode the packets received, all
packets are 'false'. (PS:Same command works well on USRP1)
After many times' tests,
I keep the packet size same.i.e 1500 bytes and send 6000 bytes instead
of the default( 1 Mb) in benchmark tx...I see that none or at the max 1
packet is received correctly by benchmark rx.
In contrast, when I send 1 Mb, all of the 600 odd packets are received
correctly..how can i improve
to specify costas-alpha as 0.05 and gain-mu as 0.001
as your starting point. Hope this would help.
Bill
--- On *Tue, 5/12/09, Eric Blossom /e...@comsec.com/* wrote:
From: Eric Blossom e...@comsec.com
Subject: Re: [Discuss-gnuradio] Benchmark-rx/tx.py with QPSK
modulation
Hi everyone,
I want to ask if someone has tried the benchmark-rx.py/bencmark-tx.py
(gnuradio-examples/python/digital) in the the 3.1.3 realease with qpsk
modulation (-m dqpsk) for transfering user data? I connected 2 usrps
with an RF cable and two laptops (gnuradio 3.1.3 release).
Using gmsk
On Tue, May 12, 2009 at 03:02:20PM +0200, Boris Danev wrote:
Hi everyone,
I want to ask if someone has tried the benchmark-rx.py/bencmark-tx.py
(gnuradio-examples/python/digital) in the the 3.1.3 realease with qpsk
modulation (-m dqpsk) for transfering user data? I connected 2 usrps
Hi Boris
I think you need to specify costas-alpha as 0.05 and gain-mu as 0.001 as your
starting point. Hope this would help.
Bill
--- On Tue, 5/12/09, Eric Blossom e...@comsec.com wrote:
From: Eric Blossom e...@comsec.com
Subject: Re: [Discuss-gnuradio] Benchmark-rx/tx.py with QPSK modulation
hi,
I try to use benchmark in gnuradio. When I use gmsk which is default
modulation scheme there is not error in detection of packets in the receiver
but when I use other modulation options like dbpsk detection of all packets
fail.
why does it happen?
thanks,
Mehdi
--
View this message in
On Thu, Jun 19, 2008 at 3:58 PM, mehdimolu [EMAIL PROTECTED] wrote:
hi,
I try to use benchmark in gnuradio. When I use gmsk which is default
modulation scheme there is not error in detection of packets in the receiver
but when I use other modulation options like dbpsk detection of all packets
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