Sensing-based Spectrum Awareness in Cognitive Radio: Challenges and Open Research Problems



Lopez-Benitez, Miguel ORCID: 0000-0003-0526-6687
(2014) Sensing-based Spectrum Awareness in Cognitive Radio: Challenges and Open Research Problems. In: 2014 9th International Symposium on Communication Systems, Networks & Digital Signal Processing (CSNDSP), 2014-7-23 - 2014-7-25.

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Abstract

Owing to the opportunistic nature of its operation principle, the performance of Dynamic Spectrum Access/Cognitive Radio (DSA/CR) systems depends on the spectrum occupancy pattern of primary systems. DSA/CR systems can monitor periodically the occupancy state of licensed channels in order to gain statistical information on their occupancy patterns, and exploit this information in decision-making processes. This paper provides an overview of relevant research topics related with the problem of providing DSA/CR systems with the ability to gain accurate, reliable and exploitable information on realtime spectrum occupancy. In particular, this paper reviews the following problems: i) spectrum sensing algorithms for spectrum occupancy estimation; ii) estimation of spectrum occupancy statistics based on spectrum sensing; and iii) statistical models for spectrum occupancy. Existing solutions are reviewed and open research problems are discussed as well.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Cognitive radio, dynamic spectrum access, spectrum awareness, spectrum sensing
Depositing User: Symplectic Admin
Date Deposited: 23 Mar 2015 10:50
Last Modified: 15 Dec 2022 15:32
DOI: 10.1109/csndsp.2014.6923873
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/2007882