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Characterization and exploitation of heterogeneous OFDM primary users in cognitive radio networks

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Abstract

The fundamental features of cognitive radio (CR) systems are their ability to adapt to the wireless environment where they operate and their opportunistic occupation of the licensed spectrum bands assigned to the primary network. CR users in CR systems should not cause any interference to primary users (PUs) of the primary network. For this purpose, CR users need to accurately estimate the features and activities of the primary users. In this paper, a novel characterization of heterogeneous PUs and a novel reconfigurability solution in CR networks are introduced. The characterization of PUs consists of a detector and classifier that distinguishes between heterogenous PUs. The PU characteristics stored in radio environmental maps are utilized by an interference/throughput adapter for the optimization of CR parameters. The performance of the proposed solutions is evaluated by showing false alarm and missed detection probabilities of the detector/classifier in a multipath fading channel with additive white Gaussian noise. Moreover, the impact of the PU characteristics on the CR throughput is analyzed.

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Authors and Affiliations

  1. Dipartimento di Ingegneria Industriale e dell’Informazione, Università degli Studi di Pavia, Via Ferrata 1, 27100, Pavia, Italy

    Anna Vizziello, Lorenzo Favalli & Pietro Savazzi

  2. Telecommunication Engineering School (ETSETB), Universitat Politècnica de Catalunya, C. Jordi Girona 31, 08034, Barcelona, Spain

    Ian F. Akyildiz

  3. Department of Information Technology, King Abdulaziz University, Jeddah, Saudi Arabia

    Ian F. Akyildiz

  4. Department of Signal Theory and Communications (TSC), Universitat Politècnica de Catalunya, C. Jordi Girona 31, 08034, Barcelona, Spain

    Ramon Agustí

Authors
  1. Anna Vizziello
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  2. Ian F. Akyildiz
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  3. Ramon Agustí
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  4. Lorenzo Favalli
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  5. Pietro Savazzi
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Corresponding author

Correspondence to Anna Vizziello.

Additional information

The work of Ian F. Akyildiz and Ramon Agustí was supported by the European Commission in the framework of the FP7 FARAMIR Project (Ref. ICT- 248351).

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Vizziello, A., Akyildiz, I.F., Agustí, R. et al. Characterization and exploitation of heterogeneous OFDM primary users in cognitive radio networks. Wireless Netw 19, 1073–1085 (2013). https://doi.org/10.1007/s11276-012-0519-z

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  • DOI: https://doi.org/10.1007/s11276-012-0519-z

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