On four suboptimal quadratic detectors for random signals

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

2 Scopus Citations
View graph of relations

Author(s)

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)4527-4532
Journal / PublicationIEICE Transactions on Communications
VolumeE88-B
Issue number12
Publication statusPublished - Dec 2005

Abstract

This paper tackles the problem of detecting a random signal embedded in additive white noise. Although the likelihood ratio test (LRT) is the well-known optimum detector for this problem, it may not be easily realized in applications such as radar, sonar, seismic, digital communications, speech analysis and automatic fault detection in machinery, for which suboptimal quadratic detectors have been extensively employed. In this paper, the relationships between four suboptimal quadratic detection schemes, namely, the energy, matched subspace, maximum deflection ratio as well as spectrum matching detectors, and the LRT are studied. In particular, we show that each of those suboptimal detectors can approach the optimal LRT under certain operating conditions. These results are verified via Monte Carlo simulations. Copyright © 2005 The Institute of Electronics, Information and Communication Engineers.

Research Area(s)

  • Quadratic detectors, Random signals

Citation Format(s)

On four suboptimal quadratic detectors for random signals. / So, Hing-Cheung; Ma, Wing-Kin; Farina, Alfonso; Gini, Fulvio; Tsui, Wing-Yue.

In: IEICE Transactions on Communications, Vol. E88-B, No. 12, 12.2005, p. 4527-4532.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review