back to article Interference-dodging app sidesteps Wi-Fi band-hoggers

Airshark is an experimental application bringing detect-and-avoid frequency-hopping to previously dumb Wi-Fi cards, without the addition of any new hardware. Created by three boffins at the University of Wisconsin, Airshark uses the limited intelligence of existing Wi-Fi cards to spot other protocols hanging out in the 2.4GHz …


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  1. Optical fiend

    Protocol Media access Controler

    I think a bit more detail explaining the MAC layer would have been better rather than just using the word Protocol because it makes the article difficult to understand

  2. Red Bren

    Microwave Ovens?

    Why are microwave ovens communicating on the 2.4GHz band? They're plotting something! Don't say I didn't warn you!!!

    Mine's the white one with the sleeves that tie up at the back...

  3. TeeCee Gold badge

    Are we sure?

    "This kind of thing is already possible, but only using spectrum analysis hardware that would be prohibitively expensive to put into a Wi-Fi router."

    Someone should tell AVM. Their Fritz! wireless routers have been showing interference from other sources in the WiFi bands at the click of a checkbox for some time. They'll be delighted to hear that this is actually impossible without a load of expensive kit they don't provide.

  4. Anonymous Coward
    Anonymous Coward

    Easy way...

    to triple available bandwidth...

    Just knock on the door every BT Homehub user and ask them to use a REAL router rather than BT's mickey mouse POS

  5. deains
    Thumb Up


    Hope they can make it through the seven circles of patent hell to bring the tech to market.

  6. HMB

    Software Radio

    Software Radio Rules. How much more to say is there than that?

    One Chipset to rule them all, One Chipset to find them,

    One Chipset to bring them all and in the software bind them

  7. Anon

    Name hopping

    Does this mean Ethereal is going to change its name again?

  8. Anonymous Coward
    Anonymous Coward

    Isn't this rather like the radar detection/avoidance necessary when operating in the 5 GHz range?

  9. Maryland, USA

    Nice writing, as always

    Great job, Bill Ray. Among the many scribes who aim to clarify the what and why of wireless, "No-o-body does it better."

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