Well, as Martin said, if you want to avoid resending your own
packets you will need to be able to keep track of which packet you
already sent; you can also "numb" the receiver for the duration of
your TX. None of this hasn't, to my knowledge, been with the GNU
Radio examples, and since it involves logic that cannot be well
represented by graphical flowgraphs, you'll most likely have to get
your hands dirty writing some MAC intelligence. Packet en/decoder is
only that -- Phy layer packet decoders; you will need some MAC on
top of that to have control medium access.
Generally, doing it on the same frequency will effectively half your
available time-bandwidth product, ie your transmission capacity, and
it will lead to receivers seeing both the original and your repeated
packet receiving things twice. In many cases, this is ok or even
desirable, but for simpler set ups, where spectrum is not overly
hard to obtain, you might want to go for a frequency translating
repeater.
Greetings,
Marcus
On 05.09.2014 17:39, TSAREGORODTSEV,
Yury wrote:
Dear Martin,
yes, absolutely, idea is to do signal repeater.
Whats the best solution can be ?
----- Original Message -----
From: "Martin Braun" <address@hidden>
To: "Yury TSAREGORODTSEV" <address@hidden>
Cc: address@hidden
Sent: Friday, September 5, 2014 5:31:05 PM
Subject: Re: [Discuss-gnuradio] full duplex infinity loop
Do you mean the fact that you'll be receiving your own packets? There's several ways to do this, e.g. You can catch your own packets in the mac layer.
M
On 5 Sep 2014 17:27, "TSAREGORODTSEV, Yury" < address@hidden > wrote:
Hello,
can anyone suggest how to prevent infinity loop in case of full duplex RX/TX on same frequency ?
Any ideas?
GRC example:
UHD source -> GMSK DEMOD -> packet decoder -> packet encoder -> GMSK MOD -> UHD SINK
but in this case of course its gonna be infinity loop,
any suggestion how to avoid this?
Thx.
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