Hello Dan,
Thanks for your answer. I'm using for transmitting the traditional USRP
sink block provided by Gnuradio Companion. Each packet coming to this
block is tagged with its length at the first sample. For the receiving
part, I'm using the USRP source block. Both are used with basic
parameters.
Do you think I should modify/use different parameters for these blocks
?
Raphaël
On Thu, 8 Feb 2018 11:54:07 -0500, Dan Veeneman wrote:
Hello Rafael,
Are you sure the transmitter has stopped radiating immediately after
the
end of a packet? The power amplifier on the transmitter may take a
small amount of time to go from powered up to powered down, although
40
milliseconds may be excessive.
Do you have a writeup and/or code for your burst transmission system
(transmitter and receiver), that perhaps others may be able to
duplicate
the issue?
Regards,
Dan
On 2/8/2018 11:33 AM, NAVES Raphael via USRP-users wrote:
Hello everyone,
I implemented a burst transmission between two USRP N210. The
transmission and the packet receiving works well, however I'm facing
the
following problem. From the reception side, I notice that after the
packet receiving, the sampling signal does not come back to the
ambient
noise immediatly. It takes few milliseconds (about 40 ms) to come
back
to "0". It's like if there is still a signal transmitted after the
real
packet transmission. It may be a problem when you want to receive
many
consecutive packets with few space between them
I suppose that it comes from an hardware problem when the signal is
put
on the baseband ? Does that deal with the LO leakage ? What can we
do to
avoid this additional signal ?
Thanks,
Raphaël
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