A robust estimator and detector of circularity of complex signals

Esa Ollila, Visa Koivunen, H. Vincent Poor

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations

Abstract

Recent research has revealed that circularity (or, propriety) of complex random signals can be exploited in developing optimal signal processors. In this paper, a robust estimator of circularity is proposed. The estimate is found by solving M-estimation equations and employing a novel weighting scheme. A simple iterative algorithm for its computation is introduced. A robust circularity detector stemming from the large sample properties of the estimator is proposed. It is shown to be valid detector under the broad class of complex elliptically symmetric (CES) distributions. An illustrative example demonstrating the reliable performance of the detector in a practical signal processing application is provided.

Original languageEnglish (US)
Title of host publication2011 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2011 - Proceedings
Pages3620-3623
Number of pages4
DOIs
StatePublished - Aug 18 2011
Event36th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2011 - Prague, Czech Republic
Duration: May 22 2011May 27 2011

Publication series

NameICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
ISSN (Print)1520-6149

Other

Other36th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2011
CountryCzech Republic
CityPrague
Period5/22/115/27/11

All Science Journal Classification (ASJC) codes

  • Software
  • Signal Processing
  • Electrical and Electronic Engineering

Keywords

  • 2nd-order circular complex random variable
  • Improper
  • circularity coefficient
  • circularity quotient

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