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On the use of POMDP for spectrum selection in cognitive Radio networks

Raschella, A, Perez-Romero, J, Sallent, O and Umbert, A (2013) On the use of POMDP for spectrum selection in cognitive Radio networks. In: Proceedings of the 2013 8th International Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2013 . (8th International Conference on Cognitive Radio Oriented Wireless Networks, 8-10th July 2013, Washington DC USA).

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Abstract

Dynamic Spectrum Access is a key capability of Cognitive Radio (CR) networks to increase the efficiency in the use of the available spectrum resources. In this respect, this paper focuses on the spectrum selection problem when a number of radio links has to be established in a CR network to support applications with different bit rate requirements. A novel strategy based on a Partially Observable Markov Decision Process (POMDP) is proposed, whose target is to maximize a reward function that reflects the suitability of the available spectrum blocks to the application requirements. The proposed strategy combines partial observations of the interference state in the different spectrum blocks together with a statistical characterization of the interference dynamics. Thanks to this feature, the performance comparison of the algorithm against different reference strategies reveals that it achieves a very similar performance than a strategy operating under full knowledge of the real interference state of all the spectrum blocks, while at the same time it has much less requirements in terms of measurement needs and associated signaling. © 2013 ICST - The Institute for Computer Sciences, Social Informatics and Telecommunications Engineering.

Item Type: Conference or Workshop Item (Paper)
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions: Computer Science
Publisher: IEEE
Date Deposited: 18 Oct 2019 10:02
Last Modified: 18 Oct 2019 10:02
DOI or Identification number: 10.4180/icst.crowncom.2013.251983
URI: http://researchonline.ljmu.ac.uk/id/eprint/11600

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