Sampling approach to bandlimiting instantaneously companded signals

Jennifer Q. Trelewicz, Ross Martin, Douglas Cochran

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

Abstract

A well-known theorem of Beurling demonstrates that distinct bandlimited signals remain distinct after instantaneous companding and ideal lowpass filtering. Motivated by this result, Landau developed an iterative method for recovering a bandlimited signal after companding and lowpass filtering. This paper describes an alternative to lowpass filtering for restoring the original bandwidth to a companded bandlimited signal prior to transmission on a bandlimited channel. This approach allows the original signal to be recovered without iteration, but it also introduces some synchronization issues. These issues are examined and the design of companding functions that endow the transmitted with desired characteristics is considered.

Original languageEnglish (US)
Title of host publicationConference Record of the Asilomar Conference on Signals, Systems and Computers
PublisherIEEE
Pages1407-1411
Number of pages5
Volume2
StatePublished - 1997
EventProceedings of the 1996 30th Asilomar Conference on Signals, Systems & Computers. Part 2 (of 2) - Pacific Grove, CA, USA
Duration: Nov 3 1996Nov 6 1996

Other

OtherProceedings of the 1996 30th Asilomar Conference on Signals, Systems & Computers. Part 2 (of 2)
CityPacific Grove, CA, USA
Period11/3/9611/6/96

ASJC Scopus subject areas

  • Hardware and Architecture
  • Signal Processing
  • Electrical and Electronic Engineering

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  • Cite this

    Trelewicz, J. Q., Martin, R., & Cochran, D. (1997). Sampling approach to bandlimiting instantaneously companded signals. In Conference Record of the Asilomar Conference on Signals, Systems and Computers (Vol. 2, pp. 1407-1411). IEEE.