Digital Communication: Third Edition
Digital Communication: Third Edition
DIMSUMNet: New Directions in Wireless Networking Using Coordinated Dynamic Spectrum Access
WOWMOM '05 Proceedings of the Sixth IEEE International Symposium on World of Wireless Mobile and Multimedia Networks
Cognitive radio: brain-empowered wireless communications
IEEE Journal on Selected Areas in Communications
SCFP: sectored circle forwarding protocol: a system enabling dynamic spectrum access
Proceedings of the 4th International Conference on Cognitive Radio and Advanced Spectrum Management
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Several concepts for more dynamic spectrum access have been suggested: 1. Terminals making autonomous decisions without coordination. 2. Networks cooperating in Peer-to-Peer (P2P) constellations without an infrastructure. 3. Centralized spectrum server concepts which makes local decisions and coordinate through a broker hierarchy. In this paper we compare these three types of concepts in terms of spectrum decisions, computational complexity in the radio nodes and the need for spectrum coordination traffic between nodes. We present practical algorithms in terms of complexity and performance. We conclude with discussing the usefulness of these systems for military deployable communications systems in a hostile environment.