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Guimarães DA, Aquino GP. Resource-efficient fusion over fading and non-fading reporting channels for cooperative spectrum sensing. Sensors (Basel). 2015;15(1):1861-84doi: 10.3390/s150101861.
Guimarães, D. A., & Aquino, G. P. (2015). Resource-efficient fusion over fading and non-fading reporting channels for cooperative spectrum sensing. Sensors (Basel, Switzerland), 15(1), 1861-84. https://doi.org/10.3390/s150101861
Guimarães, Dayan Adionel, and Aquino, Guilherme Pedro. "Resource-efficient fusion over fading and non-fading reporting channels for cooperative spectrum sensing." Sensors (Basel, Switzerland) vol. 15,1 (2015): 1861-84. doi: https://doi.org/10.3390/s150101861
Guimarães DA, Aquino GP. Resource-efficient fusion over fading and non-fading reporting channels for cooperative spectrum sensing. Sensors (Basel). 2015 Jan 16;15(1):1861-84. doi: 10.3390/s150101861. PMID: 25602264; PMCID: PMC4327106.
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Sensors (Basel). 2015 Jan 16;15(1):1861-84. doi: 10.3390/s150101861.

Resource-efficient fusion over fading and non-fading reporting channels for cooperative spectrum sensing.

Sensors (Basel, Switzerland)

Dayan Adionel Guimarães, Guilherme Pedro Aquino

Affiliations

  1. National Institute of Telecommunications - Inatel, Av. João de Camargo, 510, Santa Rita do Sapucaí 37540-000, Brazil. [email protected].
  2. National Institute of Telecommunications - Inatel, Av. João de Camargo, 510, Santa Rita do Sapucaí 37540-000, Brazil. [email protected].

PMID: 25602264 PMCID: PMC4327106 DOI: 10.3390/s150101861

Abstract

Recently, a novel resource-efficient technique for the reporting channel transmissions in cooperative spectrum sensing was proposed. In this technique, secondary users are allowed to simultaneously send their local decisions to the fusion center, saving time and frequency resources. Expressions for the probabilities of detection and false alarm for the unitary-gain AWGN reporting channels were derived, while simulation results were given for both the AWGN and Rayleigh fading channels. Here, we provide an expression that is applicable to AWGN channels with different real-valued gains and to time-varying real-valued gains. A simple suboptimum receiver is proposed for the general complex-valued fading and non-fading channels, with an improved performance in the low signal-to-noise ratio condition. Numerical results are shown for both the AWGN and Rayleigh fading reporting channels, demonstrating the accuracy of the derived expressions and the attractive performance of the proposed receiver.

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