ECE Seminar Series - Bozidar Radunovic: The power challenge in unlicensed wide-area wireless networks, August 26, 2014, 4:00 PM - 5:00 PM
Electrical and Computer Engineering
|From: ||Microsoft Research, Cambridge|
George R. Brown Hall
Title: The power challenge in unlicensed wide-area wireless networks
Abstract: Recent FCC rulings on TV white spaces provide a new opportunity for unlicensed wireless networking in spectrum chunks with unique propagation characteristics. But this opportunity also comes with new challenges in network design. In this talk we will discuss some of these challenges and in particular the power asymmetry problem. Due to the specifics of the regulations some nodes will be allowed to transmit with higher powers than others. Further power asymmetry is caused by the network topology and node placement. As a consequence, the interference patterns in these networks will be very different than in WiFi and the existing MAC designs will not work. We illustrate these issues with two application scenarios, discuss why existing solutions will not work, and propose practical systems that address these challenges.
Bozidar Radunovic is a Researcher in the Networks, Economics and Algorithms and Systems and Networking groups at Microsoft Research, Cambridge. His research interests are in design and evaluation of computer systems and algorithms with particular interest in wireless communication and algorithms for processing big data.
Bozidar received his PhD in technical sciences from EPFL, Switzerland, in 2005, and his BSc at the School of Electrical Engineering, University of Belgrade, Serbia, in 1999. In 2006 he spent one year as a post-doc researcher at TREC, at ENS Paris and then joined Microsoft Research. In 2008 he was awarded IEEE William R. Bennett Prize Paper Award in the Field of Communications Systems.