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September 23, 2010

Mtg: Dynamic Spectrum Access in Wireless Ad Hoc Networks: Issues and Possible Solutions

by @ 1:13 pm. Filed under ALL, Communications, Electronics Design, Engineering Mgmt

TUESDAY November 2, 2010
SF Communications Chapter
Speaker: Dr. Zhensheng Zhang, Argon ST
Time: Presentation at 6:30 PM
Cost: none
Place: California Public Utilities Commission, 505 Van Ness Ave, San Francisco
RSVP: by email to Tim Ryan,

In this talk, we present a brief overview on the recent development of the dynamical spectrum access (DSA) techniques, focusing on the following areas: characteristics of the available bandwidth of the primary users, sensing technologies? and sensing intervals to detect white spaces, spectrum allocation and management, reliability of the secondary user, tradeoff between spectrum/performance gain versus additional overhead used in implementing DSA, and cross layer optimization in spectrum sharing.? Some of tradeoff studies are presented in terms of price of anarchy, which is defined as the price that a decentralized system should pay for not being coordinated.? In the second part of the talk, we present a brief overview of the security issues associated with DSA networks, including communications, jamming and anti-jamming, and describe a secured multi-functional framework which can support DSA, cognitive jamming and anti-jamming.? The proposed multi-function framework uses prediction algorithms for resource allocation.? A cognitive/predictive jamming algorithm can leverage machine learning and prediction methods.

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