Clearing the RF Smog: Making 802.11n Robust to Cross-Technology Interference

@inproceedings{2011-Gollakota-sigcomm,
    author = "Gollakota, Shyamnath and Adib, Fadel and Katabi, Dina and Seshan, Srinivasan",
    title = "Clearing the RF Smog: Making 802.11n Robust to Cross-Technology Interference",
    year = "2011",
    isbn = "9781450307970",
    publisher = "Association for Computing Machinery",
    address = "New York, NY, USA",
    url = "https://doi.org/10.1145/2018436.2018456",
    doi = "10.1145/2018436.2018456",
    abstract = "Recent studies show that high-power cross-technology interference is becoming a major problem in today's 802.11 networks. Devices like baby monitors and cordless phones can cause a wireless LAN to lose connectivity. The existing approach for dealing with such high-power interferers makes the 802.11 network switch to a different channel; yet the ISM band is becoming increasingly crowded with diverse technologies, and hence many 802.11 access points may not find an interference-free channel.This paper presents TIMO, a MIMO design that enables 802.11n to communicate in the presence of high-power cross-technology interference. Unlike existing MIMO designs, however, which require all concurrent transmissions to belong to the same technology, TIMO can exploit MIMO capabilities to decode in the presence of a signal from a different technology, hence enabling diverse technologies to share the same frequency band. We implement a prototype of TIMO in GNURadio-USRP2 and show that it enables 802.11n to communicate in the presence of interference from baby monitors, cordless phones, and microwave ovens, transforming scenarios with a complete loss of connectivity to operational networks.",
    booktitle = "ACM SIGCOMM Conference",
    pages = "170–181",
    numpages = "12",
    month = "August",
    category = "Chaotic",
    keywords = "cross-technology interference, cognitive mimo",
    location = "Toronto, Ontario, Canada",
    series = "SIGCOMM '11"
}