Lecture: Collaborative Cognitive Radios: Putting an End to Spectrum Scarcity

Date: 
Monday, November 3, 2008 - 3:40pm

UCSB COMPUTER SCIENCE DEPARTMENT PRESENTS:
MONDAY, NOVEMBER 3, 2008
3:30 – 4:30
Computer Science Conference Room, Harold Frank Hall Rm. 1132

HOST: ELIZABETH BELDING

SPEAKER: HEATHER ZHENG
Faculty, UCSB Computer Science

Title: Collaborative Cognitive Radios: Putting an End to Spectrum
Scarcity

Abstract:

The static nature of today’s spectrum allocations makes them highly
inefficient. While assigned spectrum sits unused, new prominent
wireless technologies are denied from spectrum access. If not
addressed, such inefficiency will soon put a stop to wireless growth
and innovation.

This talk provides an overview of UCSB LINK lab’s research where we
tackle the artificial spectrum scarcity using cognitive radios that
dynamically access radio spectrum. Specifically, we will discuss our
recent works in the following two areas:

(1) From a networking perspective, we have designed a set of robust
and scalable systems and algorithms to provide reliable and efficient
spectrum usage to wireless networks. By proactively learning
environment conditions and coordinating with peers to make mutually
consistent decisions that maximize system-wide efficiency, wireless
devices can share spectrum fairly with peers, quickly adapt to
network dynamics and reliably obtain desired spectrum.

(2) Next, from an economic perspective, we have designed a set of
eBay-like dynamic spectrum auction systems, that utilize economic
incentives to efficiently redistribute spectrum across existing
owners and new wireless users while avoiding fear of market
manipulation.

Further information on the LINK lab projects can be found at
http://link.cs.ucsb.edu.

Bio:

Heather Zheng has been an assistant professor in the Computer Science
Department since Fall 2005. Her research interests are wireless
networks and systems, with a recent emphasis on cognitive radios,
dynamic spectrum access, and spectrum auctions.