Blind equalization using cost function matched to the signal constellation

S. Barbarossa, Anna Scaglione

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

44 Scopus citations

Abstract

The Constant Modulus Algorithm (CMA) has been proved to be very effective to equalize non-minimum-phase channels blindly. However, CMA suffers from a residual intersymbol interference (ISI) and slow convergence when applied to high order non-constant modulus (e.g. QAM) constellations and the equalizer is an FIR filter. In this paper we propose a method able to provide lower ISI and faster convergence rate than CMA, based on cost functions specifically matched to the signal constellation. Differently from CMA methods, where the matching between a certain number of cumulants between the equalizer output and the signal constellation is the driving criterion, the cost function used in this paper tries to force the equalizer output to belong to the signal constellation. The superiority of the proposed approach with respect to conventional approaches is verified by simulation.

Original languageEnglish (US)
Title of host publicationConference Record of the Asilomar Conference on Signals, Systems and Computers
EditorsM.P. Farques, R.D. Hippenstiel
PublisherIEEE Comp Soc
Pages550-554
Number of pages5
Volume1
StatePublished - 1998
Externally publishedYes
EventProceedings of the 1997 31st Asilomar Conference on Signals, Systems & Computers. Part 1 (of 2) - Pacific Grove, CA, USA
Duration: Nov 2 1997Nov 5 1997

Other

OtherProceedings of the 1997 31st Asilomar Conference on Signals, Systems & Computers. Part 1 (of 2)
CityPacific Grove, CA, USA
Period11/2/9711/5/97

ASJC Scopus subject areas

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

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  • Cite this

    Barbarossa, S., & Scaglione, A. (1998). Blind equalization using cost function matched to the signal constellation. In M. P. Farques, & R. D. Hippenstiel (Eds.), Conference Record of the Asilomar Conference on Signals, Systems and Computers (Vol. 1, pp. 550-554). IEEE Comp Soc.