Colloquium Summary: 2

11/29/2007
Advances in Cognitive Radio Networks
Douglas C. Sicker

The following are the bullet points from his talk:

His research interests lie at the intersection of technology and policy.
He talked about his current researches.
He first presented the radio spectrum allocation.
The band appears to be rather crowded. It is allocated but not always used; usage varies across band, time and location.
So, we need a cognitive radio so that we can utilize spectrum more efficiently.
He used software defined radios to sense the environment and learn how to adapt.
What makes cognitive radio networks hard: interference avoidance, detection, computational complexity and security.
Problem: Interference; Goal: System dynamically adapts to maintain performance goals in presence of interference.
He varied a lot of parameters to achieve this goal.
He worked on both simulation and implementation.
He conducted a measurement and did multivariate analysis to understand the interactions.
He used multifactor/knobs to improve the bit loss.
Basic statistical methods and experimentally informed algorithm design provide a useful mechanism for adapting a radio.
He also mentioned the security issues in his system.

Last modified 29 November 2007 at 9:59 pm by panichsa