Performance and Reporting Channel Traffic of Eigenvalue Fusion and Block-coded Decision Fusion for Spectrum Sensing of OFDMA Signals

Authors

  • Lucas dos Santos Costa National Institute of Telecommunications - Inatel
  • Dayan Adionel Guimarães National Institute of Telecommunications - Inatel
  • Rausley Adriano Amaral de Souza National Institute of Telecommunications - Inatel

DOI:

https://doi.org/10.14209/jcis.2016.4

Abstract

This paper presents a comparison between performance and data traffic in the reporting control channel of a cooperative centralized spectrum sensing scheme designed to detect idle OFDMA subchannels for cognitive radio applications. Eigenvalue and decision fusion strategies are compared when repetition and BCH block codes are used to protect the data carrying the sensor decisions. It is unveiled that the potential larger sensitivity to channel errors of the decision fusion can be supplanted when block codes are used, in some cases leading to an overall smaller amount of traffic when compared with the eigenvalue fusion. However, the advantage of the decision fusion over the eigenvalue fusion is not always pronounced, and sometimes reversed, demanding a case-by-case trade-off analysis regarding the target performance and the reporting channel traffic.This paper presents a comparison between performance and data traffic in the reporting control channel of a cooperative centralized spectrum sensing scheme designed to detect idle OFDMA subchannels for cognitive radio applications. Eigenvalue and decision fusion strategies are compared when repetition and BCH block codes are used to protect the data carrying the sensor decisions. It is unveiled that the potential larger sensitivity to channel errors of the decision fusion can be supplanted when block codes are used, in some cases leading to an overall smaller amount of traffic when compared with the eigenvalue fusion. However, the advantage of the decision fusion over the eigenvalue fusion is not always pronounced, and sometimes reversed, demanding a case-by-case trade-off analysis regarding the target performance and the reporting channel traffic.

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Published

2016-02-29

How to Cite

Costa, L. dos S., Guimarães, D. A., & de Souza, R. A. A. (2016). Performance and Reporting Channel Traffic of Eigenvalue Fusion and Block-coded Decision Fusion for Spectrum Sensing of OFDMA Signals. Journal of Communication and Information Systems, 31(1). https://doi.org/10.14209/jcis.2016.4

Issue

Vol. 31 No. 1 (2016)

Section

Regular Papers

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Received 2015-11-25
Accepted 2016-02-17
Published 2016-02-29