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Generalized energy detector for weak random signals via vibrational resonance

Authors :
Yan Pan
Fabing Duan
Yuhao Ren
Source :
Physics Letters A. 382:806-810
Publication Year :
2018
Publisher :
Elsevier BV, 2018.

Abstract

In this paper, the generalized energy (GE) detector is investigated for detecting weak random signals via vibrational resonance (VR). By artificially injecting the high-frequency sinusoidal interferences into an array of GE statistics formed for the detector, we show that the normalized asymptotic efficacy can be maximized when the interference intensity takes an appropriate non-zero value. It is demonstrated that the normalized asymptotic efficacy of the dead-zone-limiter detector, aided by the VR mechanism, outperforms that of the GE detector without the help of high-frequency interferences. Moreover, the maximum normalized asymptotic efficacy of dead-zone-limiter detectors can approach a quarter of the second-order Fisher information for a wide range of non-Gaussian noise types.

Details

ISSN :
03759601
Volume :
382
Database :
OpenAIRE
Journal :
Physics Letters A
Accession number :
edsair.doi...........12cf24a187ad2f2df04cd18da27c802c
Full Text :
https://doi.org/10.1016/j.physleta.2018.01.015