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A Comparison of Ungerboeck and Forney Models for Reduced-Complexity ISI Equalization

Publiceringsår: 2007
Språk: Engelska
Sidor: 1431-1436
Publikation/Tidskrift/Serie: IEEE Global Telecommunications Conference, 2007. GLOBECOM '07.
Dokumenttyp: Konferensbidrag
Förlag: IEEE--Institute of Electrical and Electronics Engineers Inc.


This paper investigates the performance of reduced-state

trellis-based intersymbol interference equalizers, which are based

on the so-called Ungerboeck and Forney observation models.

Although the two models are equivalent when an optimum equalizer

is employed, their performances differ significantly when using

reduced-complexity methods. It is demonstrated that practical

equalizers operating on the Forney model outperform those

operating on the Ungerboeck model for high signal-to-noise ratios

(SNRs), while the situation is reversed for low SNR levels. A

novel reduced-complexity equalization strategy that improves on

previous Ungerboeck-based equalizers is proposed.


  • Electrical Engineering, Electronic Engineering, Information Engineering


IEEE Global communications conference (Globecom), 2007
  • ISSN: 1930-529X
  • ISBN: 978-1-4244-1043-9

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