Affiliation:
1. National Institute of Telecommunications—Inatel, Av. João de Camargo 510, Santa Rita do Sapucaí 37540-000, MG, Brazil
Abstract
Recently, the Gini index detector (GID) has been proposed as an alternative for data-fusion cooperative spectrum sensing, being mostly suitable for channels with line-of-sight or dominant multi-path components. The GID is quite robust against time-varying noise and signal powers, has the constant false-alarm rate property, can outperform many the state-of-the-art robust detectors, and is one of the simplest detectors developed so far. The modified GID (mGID) is devised in this article. It inherits the attractive attributes of the GID, yet with a computational cost far below the GID. Specifically, the time complexity of the mGID obeys approximately the same run-time growth rate of the GID, but has a constant factor approximately 23.4 times smaller. Equivalently, the mGID takes approximately 4% of the computation time spent to calculate the GID test statistic, which brings a huge reduction in the latency of the spectrum sensing process. Moreover, this latency reduction comes with no performance loss with respect to the GID.
Funder
RNP
Radiocommunication Reference Center
Subject
Electrical and Electronic Engineering,Biochemistry,Instrumentation,Atomic and Molecular Physics, and Optics,Analytical Chemistry
Reference20 articles.
1. Federal Communications Commission, FCC (2002). Spectrum Policy Task Force Report.
2. A Survey on Spectrum Occupancy Measurement for Cognitive Radio;Das;Wirel. Pers. Commun.,2015
3. Arjoune, Y., and Kaabouch, N. (2019). A Comprehensive Survey on Spectrum Sensing in Cognitive Radio Networks: Recent Advances, New Challenges, and Future Research Directions. Sensors, 19.
4. Nasser, A., Al Haj Hassan, H., Abou Chaaya, J., Mansour, A., and Yao, K.C. (2021). Spectrum Sensing for Cognitive Radio: Recent Advances and Future Challenge. Sensors, 21.
5. Cognitive radio: Making software radios more personal;Mitola;IEEE Pers. Commun. Mag.,1999
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