Hi Dave,
Not sure whether we had the same issue. We modified the original tunnel.py
to a multichannel based tunnel. We were able to connect multiple nodes
(USRP2+WBX) initially after running tunnel.py. We could ping every nodes.
After a while, some nodes started to fail. If we restarted the failin
1. Change tx-gain if you are using tunnel.py. The default value is set to
the mid value. Use -h to find out more.
2. Spectrum analyzer would help you to observe. I believe you can also
"calculate" based on your settings. Maybe someone can point out where in the
code the bandwidth relationship is de
By the way the VERT400 144MHz, 400 MHz, and 1200 MHz Tri-band 7-inch
vertical
antenna is used.
On Tue, Jun 29, 2010 at 10:21 PM, An He wrote:
> Hi,
>
> I am sure someone has tried to find out the maximum transmission distance
> using USRP2. For example, I am interested in
Hi,
I am sure someone has tried to find out the maximum transmission distance
using USRP2. For example, I am interested in the maximum transmission range
in the following setting:
USRP2 with WBX, 400MHz/900MHz, outdoor, los, static,
benchmark_tx/benchmark_rx with default except tx_gain=25 (maximu
could you try a smaller number of fft sub carriers (e.g., fft=128,
occupied=80, cp=32, i/d=32)? usually this works better than an ofdm with a
large number of carriers. this might be because the frequency offset of the
radio becomes comparable to the bin size when the number of sub carriers is
large
