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On the impact of the Observation Strategy in a POMDP-based framework for Spectrum Selection

Raschella, A, Perez-Romero, J, Sallent, O and Umbert, A (2013) On the impact of the Observation Strategy in a POMDP-based framework for Spectrum Selection. In: 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) . (IEEE 24th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), 08 September 2013 - 11 September 2013, London, ENGLAND).

PIMRC'13_UPC_CR.pdf - Accepted Version

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Dynamic Spectrum Access, based on the Cognitive Radio (CR) paradigm, is a promising solution to improve the currently inefficient spectrum utilization. In this respect, this paper deals with the spectrum selection problem when a number of radio links has to be established in a CR network. A novel strategy based on a Partially Observable Markov Decision Process (POMDP) is proposed combining partial observations of the interference state together with a statistical characterization of the interference dynamics. In this context, the use of an efficient observation strategy is a key element to account for the trade-off between achieved performance and measurement requirements. For that purpose, the aim of the paper is to propose and evaluate different observation policies for the POMDP-based spectrum selection framework. Results show that the proposed framework is able to achieve very similar performance than a strategy operating under full knowledge of the interference state requiring much less associated signaling.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Science & Technology; Technology; Engineering, Electrical & Electronic; Telecommunications; Engineering; spectrum selection; Partially Observable Markov Decision Process (POMDP)
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions: Computer Science & Mathematics
Publisher: IEEE
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Date Deposited: 18 Oct 2019 10:26
Last Modified: 13 Apr 2022 15:17
URI: https://researchonline.ljmu.ac.uk/id/eprint/11601
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