Enhanced spectrum awareness using Bayesian nonparametric pattern recognition techniques

Gabriel Ford, Sean Mason, Kevin Rigney, Moshe Kam

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

We explore machine learning pattern recognition techniques as a means of informing intelligent secondary user dynamic spectrum access (DSA) strategies in a cognitive radio environment. We present a framework for learning and inferring primary user protocol state at the application and MAC layers from simple energy detector features. The resulting knowledge about the primary user protocol can be exploited by a secondary user to identify access opportunities, and to recognize when secondary user traffic has disrupted the normal behavior of the primary user. We apply Bayesian nonparametric structure learning techniques to construct Hidden Markov Models (HMM) representing primary user wireless network traffic. The learned HMM models have a highly interpretable hidden state structure that provides insight into the actual state machine of the underlying communication protocol. This framework provides efficient procedures for online protocol classification and state inference that enable the secondary user to reason intelligently about the primary user environment, and develop more efficient and adaptive DSA policies. Experimental results obtained on a wireless network testbed show that our approach learns hidden states that correspond to actual primary user application layer protocol states and also detects anomalous primary user behavior caused by secondary user interference.

Original languageEnglish (US)
Title of host publication2017 51st Annual Conference on Information Sciences and Systems, CISS 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509047802
DOIs
StatePublished - May 10 2017
Event51st Annual Conference on Information Sciences and Systems, CISS 2017 - Baltimore, United States
Duration: Mar 22 2017Mar 24 2017

Publication series

Name2017 51st Annual Conference on Information Sciences and Systems, CISS 2017

Other

Other51st Annual Conference on Information Sciences and Systems, CISS 2017
Country/TerritoryUnited States
CityBaltimore
Period3/22/173/24/17

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Information Systems and Management
  • Computer Networks and Communications
  • Information Systems

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