Access Restriction

Author Gollakota, Shyamnath ♦ Adib, Fadel ♦ Katabi, Dina ♦ Seshan, Srinivasan
Source CiteSeerX
Content type Text
File Format PDF
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Cross-technology Interference ♦ Rf Smog ♦ Baby Monitor ♦ Network Switch ♦ Ism Band ♦ Frequency Band ♦ Cordless Phone ♦ Inthe Presence ♦ Withsuch High-power Interferers ♦ Recent Study ♦ Different Channel ♦ Concurrent Transmission ♦ Access Point ♦ Wireless Lan ♦ Timo Ingnuradio-usrp2and Show ♦ Diverse Technology ♦ Cross-technology Interference Isbecomingamajorproblem Intoday S802 ♦ Henceenablingdiverse Technology ♦ Mimo Design ♦ Mimo Capability
Abstract Recent studies show that high-power cross-technology interference isbecomingamajorproblem intoday’s802.11networks. Devices like baby monitors and cordless phones can cause a wireless LAN to lose connectivity. The existing approach for dealing withsuch 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 findaninterference-free channel. ThispaperpresentsTIMO,aMIMOdesignthatenables802.11n 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 presenceofasignalfromadifferenttechnology,henceenablingdiverse technologies to share the same frequency band. We implement a prototype of TIMO inGNURadio-USRP2and show that itenables 802.11n to communicate inthe presence of interference from baby monitors,cordlessphones,andmicrowaveovens,transformingscenarioswithacompletelossofconnectivitytooperationalnetworks.
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Publisher Date 2011-01-01