MMSE subchannel decision feedback equalization for filter bank based multicarrier systems

In this work we present a per-subchannel nonlinear equalizer for a class of filter bank based multicarrier (FBMC) systems. We consider the class of exponentially modulated FBMCs with offset quadrature amplitude modulated (OQAM) input symbols. We design a fractionally spaced decision feedback equaliz...

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Bibliographic Details
Published in2009 IEEE International Symposium on Circuits and Systems (ISCAS) pp. 2802 - 2805
Main Authors Baltar, L.G., Waldhauser, D.S., Nossek, J.A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.05.2009
Subjects
Amplitude modulation
AWGN
Bandwidth
Decision feedback equalizers
Filter bank
Finite impulse response filter
Frequency
Matched filters
Quadrature amplitude modulation
Redundancy
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ISBN1424438276
9781424438273
ISSN0271-4302
DOI10.1109/ISCAS.2009.5118384

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Summary:In this work we present a per-subchannel nonlinear equalizer for a class of filter bank based multicarrier (FBMC) systems. We consider the class of exponentially modulated FBMCs with offset quadrature amplitude modulated (OQAM) input symbols. We design a fractionally spaced decision feedback equalizer (DFE) that minimizes the mean squared error (MMSE) and takes into account the inter-(sub)channel interference (ICI). The input of each equalizer comprises only the output of each subchannel. In the simulation results we show that, despite its increased computational complexity, the performance and the higher bandwidth efficiency of OQAM FBMC systems makes them a competitive alternative to conventional multicarrier systems like cyclic prefix based orthogonal frequency division multiplexing (CP-OFDM).
ISBN:1424438276
9781424438273
ISSN:0271-4302
DOI:10.1109/ISCAS.2009.5118384