Re: ARLA/CLUSTER: Nunca se diga que algo é tecnicamente impossível - Full duplex! Tx and Rx on the same frequency - at the same time.

[pedro almeida]

A Skanti já tem equipamentos que fazem isto a muito tempo.

Pedro Almeida
     CT5JZX

 NRA: PN063
http://ct5jzx.nra.pt/
http://www.qrz.com/db/CT5JZX
Em 18/08/2015 15:33, "João Costa &gt; CT1FBF" <ct1fbf  gmail.com> escreveu:

> Full duplex! Bristol boffins demo Tx and Rx on the same frequency - at
> the same time
>
> Transmitting and receiving on the same radio frequency, at the same
> time, has been demonstrated by the UK's University of Bristol in a new
> YouTube video.
>
> The system being used is running 900MHz and 1800MHz with exactly the
> same equipment.
>
> There are a number of companies working on this technology, called
> full duplex radio, a technology traditionally viewed as being
> extremely difficult to implement – if not impossible.
>
> However, what has now seemingly made it possible are improvements in
> processing, which allows the noise of the transmitted signal to be
> subtracted from the received signal.
>
> One of the first patents on full duplex was filed by UK-based
> electronics, defence and telecoms company Plessey in 1980, for a
> combat radio repeater using the tech. This was called "Groundsat" and
> was used by the British Army. There was also a patent filed by Bristol
> University in the 1990s.
>
> Read more and watch the video here
> http://www.theregister.co.uk/2015/08/13/
> full_duplex_radio_tech_bristol_uni/
>
> Our thanks to Stephen, G7VFY for spotting this item
>
>
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