On 09/07/2010, at 1:31, Marcus D. Leech wrote:
> On 07/08/2010 11:50 AM, Lamar Owen wrote:
>> Since you said PCI, I'm assuming this isn't a PCI Express box we're talking
>> about here, since that changes everything. A single lane PCI-e slot is
>> capable of 250MB/s throughput, if the chipset c
Hi All,
I created a patch which adds a shift_iq setting to the usrp2.
This can shift the output of dsp_core_rx by 0 to 3 bits.
(= Multiply by 1, 2, 4 or 8)
It does proper rounding and clipping.
With the shift_iq setting in combination with the already existing
scale_iq you can optimize the dynam
On Sat, Jun 26, 2010 at 10:29 PM, Josh Blum wrote:
> Somehow distutils solves this problem:
> http://docs.python.org/release/2.5.2/dist/node11.html
> If you figure out what its calling, perhaps we could port that the
> gnuradio build system
The code that does this can be seen here:
http://svn.pyth
Unfortunately tunnel.py in the ofdm folder doesn't work for me either. Since
you had benchmark_ofdm_* running, I would use the same settings for tunnel.
I don't even have benchmark_ofdm_* going at any setting. I'm trying to get a
hold of a spectrum analyzer. Hopefully it would help to clear things
Thanks for your reply.Well I am trying to run the tunnel.py in ofdm folder.
However there is no bit rate option in it.If you have been able to successfully
run it, please send me the parameters that you changed?I have tried all day to
run it but to no avail.Not even a single packet is bei
I went ahead and locked the USRP2 to my signal analyzer's reference clock
and that seemed to knock the error down to about 11-14%, which is obviously
much improved.
However, I then looked at the signal on an oscilloscope and it looks like
the USRP2 is sending out short bursts of data instead of a
The make takes a device_addr_t which means you may pass in the formatted
string or a device_addr_t dictionary object:
mimo_usrp::make("addr=192.168.10.11 192.168.20.11")
or
device_addr_t dev_addr;
dev_addr["addr"] = "192.168.10.11 192.168.20.11"
mimo_usrp::make(dev_addr);
-Josh
On 07/08/2010
Zohair,
1- I am using a PC with four Ethernet ports. I burned the firmware and the
fpga images created on 6-7-2010. Also, I tried assigning IP addresses from
the same subnetwork: 192.168.10.X/24. However, Only a single USRP2 is
discovered at a time while others are unreachable. (USRP2s IPs are
I finally found a setting that actually works. So the real problem I think
lies in the bit rate. I had no communication whatsoever in low bit rate
(~250k). I started to have unreliable comm. at 500k and at 1Mbps I got no
packet drops for tunnel.py. However, even at 1Mbps I still got about 5%
drops
On Thursday, July 08, 2010 12:01:53 pm Marcus D. Leech wrote:
> I have a PCIe x16 slot on the mobo, it's a GigaByte GA-880GM-UD2H, so I
> guess what I really need is a
> PCIe GiGE card.
Broadcom is the biggest player in this market; eBay item # 150455393659 is one
such example and only needs a
On 07/08/2010 11:50 AM, Lamar Owen wrote:
> Since you said PCI, I'm assuming this isn't a PCI Express box we're talking
> about here, since that changes everything. A single lane PCI-e slot is
> capable of 250MB/s throughput, if the chipset can keep up. Typical server
> GigE cards for PCI-e ca
On Friday, July 02, 2010 04:40:42 pm Marcus D. Leech wrote:
> I suspect that my GiGE NIC may be dropping packets. It's an
> RTL8168d-type chip, according to "dmesg".
>
> Are there known-to-be-good-with-GnuRadio NICs for PCI with low-profile
> brackets out there? This is for
> a 2U server platf
Hi Bruh - Glad to hear you're getting Wx to work for you. We're
working on getting the Qt GUI working as well. I know that the state
of Wx on MacPorts is "confusing" right now -- to me as well. If I
were you, now that you've got it working, I'd leave my MacPorts
install alone until the W
That's pretty much the same settings that I have. Can you clarify a bit
more:
- How far apart are your boards?
- What options did you use to run tunnel, benchmark_ofdm_*, benchmark_*.
- When you run benchmark_*, did you get a lot of packet drops at the end of
transmission (about 15%)?
Thanks a
Chuck,
What hardware are you using?
On Thu, Jul 8, 2010 at 10:38 AM, chuck lorres wrote:
> Hi,
> I have successfully run digital folders tunnel.py.
> However, I am not receiving anything when i run the ofdm folder tunnel.py.
> Whereas the benchmark_ofdm_tx+rx.py is running perfectly.
> I have v
Hi,
I have successfully run digital folders tunnel.py.
However, I am not receiving anything when i run the ofdm folder tunnel.py.
Whereas the benchmark_ofdm_tx+rx.py is running perfectly.
I have varied almost all the available parameters but to no avail.
Please help me out.
Thanks in advance.
Chuc
Juan,
Thanks a lot for your response. I tried stopping at the ifconfig stage and
wait for both PCs to be ready before hitting enter. But all I saw was TX and
no RX. Do you have any idea where the problem might be?
Tuan
On Wed, Jul 7, 2010 at 7:10 PM, Juan Quiroz wrote:
> I have installed deb p
Hi all,
I'am doing some stuff with gmsk and so I had a look to gmsk.py
(gnuradio-core/src/lib/python/gnuradio/blks2impl/gmsk.py). In the
modulation part of the file, the incomming stream is nrz coded,
gaussian filtered and frequency modulated... so far so good.
But the gaussian taps for the FIR-f
Hi, Josh,Could you distribute some documents about how to implementing the
function of generating code in GRC? How to add new graphic signal processing
block in GRC?I hope to get to know some ideas on designing GRC, such as why do
you extract five basic primitives in XML: block, parameter, key,
Regarding my post below, I have traced back the error and came to a result
that the error is occurring in device.cpp file. This line in the catch block
throws an error:
device::sptr dev = maker(dev_addr);
I beleive there is something wrong in : Arg: addr=192.168.10.11
192.168.20.11 192.168
If I use the UHD driver directly (i.e. not using gnuradio framework) should I
call "mimo_usrp::make" with argument "addr=192.168.10.11 192.168.20.11
192.168.30.11 192.168.40.11, addr=192.168.10.11 192.168.20.11 192.168.30.11
192.168.40.11" to achieve the same or how should the string be formatt
It has been a while since gnuradio-3.3.0 was sent out as a release
candidate, but the Download page on the wiki still points to gnuradio-3.2.2.
Is there a reason not to use 3.3.0 or is the wiki just out of date?
-- Don W.
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Dear Josh,
I have successfully installed the UHD branch from jblum.git repo and have
tried out using the MIMO sources available. I have a few points to raise
here regarding this release and block:
1- I am using a PC with four Ethernet ports. I burned the firmware and the
fpga images created on 6-
Hi Michael,
Yes, I came up with this post:
(http://www.mail-archive.com/macports-us...@lists.macosforge.org/msg19898.html),
where installing mesa is suggested before installing wxWidgets. It is
not listed in the dependencies though.
That did the trick and I now installed gnuradio including gr-wxg
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