Distributed spectrum map for cognitive radio ad hoc networks

Authors:
Shah Nawaz Khan;Mohamed A. Kalil;Andreas Mitschele-Thiel
Affiliations:
Ilmenau University of Technology, Ilmenau, Germany;Ilmenau University of Technology, Ilmenau, Germany;Ilmenau University of Technology, Ilmenau, Germany
Venue:
Proceedings of the 4th International Conference on Cognitive Radio and Advanced Spectrum Management
Year:
2011

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Abstract

Opportunistic spectrum access without interference with primary users is one of the fundamental cognitive radio behaviours. Exhibiting such a behaviour is not a trivial task. We propose Distributed Spectrum Map (DSM), a database driven real-time and historic spectrum map for cognitive radio ad hoc networks facilitating opportunistic spectrum access. DSM is a novel approach towards developing a distributed network support architecture for efficient spectrum utilization. Heterogeneous nodes with different sensing capabilities collaborate to support the architecture in a distributed manner and maintain a knowledge base for spectrum utilization. The DSM is used by a cognitive engine for making real-time spectrum decisions.