Increasing Convergence Rate of a Fractionally-Spaced Channel Equalizer

Authors: Waseem Khan

Abstract:

In this paper a technique for increasing the convergence rate of fractionally spaced channel equalizer is proposed. Instead of symbol-spaced updating of the equalizer filter, a mechanism has been devised to update the filter at a higher rate. This ensures convergence of the equalizer filter at a higher rate and therefore less time-consuming. The proposed technique has been simulated and tested for two-ray modeled channels with various delay spreads. These channels include minimum-phase and nonminimum- phase channels. Simulation results suggest that that proposed technique outperforms the conventional technique of symbol-spaced updating of equalizer filter.

Keywords: Channel equalization, Fractionally-spaced equalizer

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1334027

References:

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[3] Gitlin, R. D., and Weinstein, S. B., "Fractionally Spaced Equalization: An Improved Digital Transversal Filter", Bell Systems Technical Journal, Vol. 60,pp. 275-296, February 1981.