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Reduced Complexity Decision Feedback Equalizer for Supporting High Mobility in Wimax

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2 Author(s)
Ivan, I. ; Sequans Commun., Paris ; Muquet, B.

In this paper, we consider the performance of WiMax systems in fast varying environments. While optimal in static channels, we first show that the conventional single tap OFDM equalizer is not satisfying even at moderate terminal speeds of 60km/h. We then study the performance of linear sliding window equalizers in the WiMax context before focusing on decision feedback equalizers (DFE). Based on our analysis, we propose a new DFE equalizer using sliding window that offers a good trade off between performance and complexity.

Published in:

Vehicular Technology Conference, 2009. VTC Spring 2009. IEEE 69th

Date of Conference:

26-29 April 2009