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Iterative Decision Feedback Equalization for Filter Bank Multicarrier Systems

Authors:
Zsolt Kollar
Gábor Péceli
Péter Horváth

Keywords: FBMC; iterative; channel equalization; decision feedback.

Abstract:
Filter Bank Multicarrier (FBMC) systems are a class of multicarrier modulation schemes for high speed wireless communication. These systems are known for their low adjacent channel leakage. In this paper we focus on the problem of channel equalization for FBMC systems. Most solutions in the literature use a per subcarrier equalization suffering from an error floor at high signal-to-noise ratios (SNR) caused by the residual inter-symbol-interference (ISI). We investigate a simple per subcarrier channel equalization method with ISI minimization and an averaging based ISI cancelation technique. We also introduce an iterative decision feedback scheme which outperforms the other known equalization methods. The presented methods are validated using simulation. The results are compared to the performance of Orthogonal Frequency Division Multiplexing (OFDM) systems with cyclic prefix (CP).

Pages: 31 to 35

Copyright: Copyright (c) IARIA, 2011

Publication date: April 17, 2011

Published in: conference

ISSN: 2308-4251

ISBN: 978-1-61208-131-1

Location: Budapest, Hungary

Dates: from April 17, 2011 to April 22, 2011