Publica
Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. Joint Spectrum Sensing and Detection of Malicious Nodes via Belief Propagation
 IEEE Communications Society: IEEE Global Telecommunications Conference, GLOBECOM 2011 : 5  9 Dec. 2011, Houston Piscataway: IEEE, 2011 ISBN: 9781424492664 ISBN: 9781424492688 ISBN: 9781424492671 
 Global Telecommunications Conference <54, 2011, Houston/Tex.> 

 Englisch 
 Konferenzbeitrag 
 Fraunhofer HHI () 
 Bayesian formulation; belief propagation; cognitive network 
Abstract
In this paper we address the problem of statistical spectrum sensing attacks, where misbehaving nodes falsify their sensing reports with a certain probability in order to artificially increase or reduce the throughput of a cognitive network. Instead of trying to identify unreliable nodes and exclude them from the decision process, we propose a novel approach where spectrum sensing and estimation of type/probability of the attacks are performed jointly. Our method is based on a Bayesian formulation and is implemented using belief propagation on factor graphs. The performance of the proposed method is then evaluated by analytical results and by simulations.