Im using an RFID package already made (by M. Buttner), and trying to
alter
the python script to output the same message signal on both Tx_A and
Tx_B
but on different carriers. However i can’t seem to make it work. I have
searched the net for examples of how to transmit on both channels with
the
same signal, but can’t find anything. The carrier setting i am pretty
sure i
have correct.
I get a error as I’m trying to set the usrp.sink_c with nchan=2 and
further
set the tx.set_mux with ((0,0),(0,1)) for targeting the Tx_A and Tx_B
port.
Further more i don’t know if the flow graph needs to be altered as my tx
sink then needs to latch the same data out on both ports? Or is there a
more
efficient way to implement this?
Can someone please help me, or refer to a forum or anything where such a
question is possibly answered.
Sorry about not posting my error message, however i think I have it
almost
correct now. At least i don’t get errors when executing the python
script.
My problem is now i was expecting my message signal to be modulated on
both
carrier frequencies. But when i for instance set my Tx_A to RF 900 MHz
and
my Tx_B to RF 800 MHz, i only see the fully modulated signal on Tx_A.
Tx_B
is just the unmodulated carrier at 800 MHz.
I guess i need to make some changes in the flow graph, to set the
message
signal to Tx_B also. Could you point me in the direction of how this is
done
the most effective? i guess my Tx block needs two inputs now, but they
need
to be the same signal? The RFID package is struggling to keep the
latency
requirement as is, so i need to do this effectively.
Im not using UHD because the RFID package does not support UHD, thus I’m
on
Gnuradio 3.3.0
Martin B.-4 wrote:
On Tue, Mar 20, 2012 at 04:39:09AM -0700, RuneS wrote:
sure i
efficient way to implement this?
Discuss-gnuradio mailing list
Kaiserstraße 12