Channel equalization using the G-probe

Constantinos Panayiotou, Andreas Spanias, Konstantinos Tsakalis

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

2 Scopus citations


In this paper, we describe the gradient-with-projection-on-optimal- bounding-ellipsoid (G-Probe) algorithm, for use in channel equalization. The G-Probe is compared to the NLMS-based equalizer in the case where the transmitted signal is attenuated by strong and periodic fading, and the channel undergoes structured interference at the same time. In such scenarios small perturbations in the channel may cause the NLMS parameters to drift, leading to large instantaneous errors referred to as burst phenomena. The G-Probe provides both MSE and instantaneous steady-state error performance guarantees resulting in reduced error bursts. This paper provides simulation results in the performance of G-Probe for a linear ISI channel with AWGN and its performance in a channel with periodic fading. Finally, the paper provides comparison results of G-Probe against three adaptive algorithms; the OBE, NLMS, and RLS.

Original languageEnglish (US)
Title of host publicationProceedings - IEEE International Symposium on Circuits and Systems
StatePublished - 2004
Event2004 IEEE International Symposium on Cirquits and Systems - Proceedings - Vancouver, BC, Canada
Duration: May 23 2004May 26 2004


Other2004 IEEE International Symposium on Cirquits and Systems - Proceedings
CityVancouver, BC

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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