Decision-making system for obtaining spectrum availability information in opportunistic networks

Marja Matinmikko, Miia Mustonen, Tapio Rauma, Javier Del Ser

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

4 Citations (Scopus)

Abstract

Opportunistic networks with cognitive management systems can improve the resource use in future wireless communication networks by forming local clusters that are temporary extensions of the infrastructure and governed by the operator. This paper presents a decision making system that selects the techniques for obtaining spectrum availability information in opportunistic networks. The proposed decision making system selects the most suitable technique(s) from cognitive control channels, databases, and spectrum sensing techniques. Moreover, a novel and simple rule-based expert system is developed to choose the spectrum sensing technique among energy detection, correlation-based detection, and waveform-based detection. The selection is made based on the required probability of detection, operational SNR, available time, and available a priori information. The developed rule-based decision making system is presented in the form of a decision tree to illustrate the dominating paths that influence the decisions. Situations where none of the considered spectrum sensing techniques can meet the given conditions are identified and new approaches are proposed including cooperative sensing and changing of the channel. Results are presented to verify the functioning of the proposed decision making system and to show the relative frequencies of the different selected sensing techniques. Significant improvements can be obtained when the decision making system is used compared to using a single sensing technique instead.
Original languageEnglish
Title of host publicationProceedings of the 4th International Conference on Cognitive Radio and Advanced Spectrum Management, CogART '11
PublisherAssociation for Computing Machinery ACM
Number of pages6
ISBN (Print)978-1-4503-0912-7
DOIs
Publication statusPublished - 2011
MoE publication typeA4 Article in a conference publication
Event4th International Conference on Cognitive Radio and Advanced Spectrum Management, CogART'11 - Barcelona, Spain
Duration: 26 Oct 201129 Oct 2011
Conference number: 4

Conference

Conference4th International Conference on Cognitive Radio and Advanced Spectrum Management, CogART'11
Abbreviated titleCogART'11
CountrySpain
CityBarcelona
Period26/10/1129/10/11

Keywords

  • Cognitive radio system
  • Cooperative spectrum sensing
  • Database
  • Heuristic decision making

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