Full-duplex with two antennas

  • It is said that wireless is a half-duplex medium. "Dual-band" stations are now common, with one antenna in the 2.4 GHz band, and the other in the 5GHz band. Suppose now we have stations with both antennas in, say, the 5GHz band, but on different channels, would full-duplex communication be possible?

    It has been three years after this question has been asked. The two Athena won't make the system become full duplex. Kumu networks is a startup company, currently tries to push their self interference cancellation product to public.

    A terminal transmitting and receiving half a million bits in one second in each direction , one bit at a TIME within some microsecond interval, is full-duplex to me.

  • bigmstone

    bigmstone Correct answer

    9 years ago

    A while back I read several articles about researchers using signal inversion cancellation to achieve full-duplex wireless. With a quick google search I found the below links to similar articles to the ones I read back when.

    TLDR; It's for sure possible...though I think they're using signal inversion cancellation instead of two channels (I.E. two different frequencies). People are working on it. Only a matter of time.

    http://sing.stanford.edu/fullduplex/ http://www.computerworld.com/s/article/9219752/Rice_demonstrates_full_duplex_wireless_technology

    I'd love to get a true RF engineers thoughts on this though. I'm by no means an RF guy.

    +1. I was hoping to find an example of one who has either manufactured or built their own RF card that synchronizes two antennas already on the market, and achieve full-duplex.

    @TWebster suggestion: post another question, but ask for "any vendors/gear which can..." The way you phrased this, bigmstone's answer is correct. "Possible?" Yes. :)

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Content dated before 7/24/2021 11:53 AM

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