Skip to main content

Techniques to Obtain Good Resolution and Concentrated Time-Frequency Distributions: A Review

Abstract

We present a review of the diversity of concepts and motivations for improving the concentration and resolution of timefrequencydistributions (TFDs) along the individual components of the multi-component signals. The central idea has been to obtain a distribution that represents the signal’s energy concentration simultaneously in time and frequency without blur andcrosscomponents so that closely spaced components can be easily distinguished. The objective is the precise description of spectralcontent of a signal with respect to time, so that first, necessary mathematical and physical principles may be developed, andsecond, accurate understanding of a time-varying spectrum may become possible. The fundamentals in this area of research havebeen found developing steadily, with significant advances in the recent past.

Publisher note

To access the full article, please see PDF.

Author information

Affiliations

Authors

Corresponding author

Correspondence to Imran Shafi.

Rights and permissions

Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Reprints and Permissions

About this article

Cite this article

Shafi, I., Ahmad, J., Shah, S.I. et al. Techniques to Obtain Good Resolution and Concentrated Time-Frequency Distributions: A Review. EURASIP J. Adv. Signal Process. 2009, 673539 (2009). https://doi.org/10.1155/2009/673539

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1155/2009/673539

Keywords

  • Information Technology
  • Individual Component
  • Quantum Information
  • Energy Concentration
  • Good Resolution