Steven Lanzisera
BSAC Graduate Student Researcher
October 14, 2008 | 12:30 to 01:30 | 521 Cory Hall, Hogan Room
Wireless networks from Wi-Fi to cellular phones to sensor networks surround us and will only continue to grow in capability and utility. We are currently seeing a large push in location aware wireless devices that rely on GPS for location information, and many interesting applications are possible with this technology. Much more will become possible when low cost and low power wireless devices incorporate location aware wireless technologies, and these devices should communicate using schemes that aren’t optimized for the classical maximum performance point of maximum throughput in minimum bandwidth. My talk will discuss two areas of my current research work: adding location awareness capabilities to low cost radios, and developing radio physical layer schemes that improve performance while reducing energy. First I will introduce a roundtrip RF time of flight method that achieves meter level accuracy using only a 2MHz RF bandwidth, and I will compare this concept with both GPS and ultra-wideband technologies. Next I will introduce a study on wireless mesh networks that shows how variable rate communication can be used to nearly double the lifetime of a wireless sensor network.
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