A Commutating Decision Feedback Equalizer (CDFE) for Digital Mobile Radios

Sukvasant TANTIKOVIT  Asrar U. H. SHEIKH  

IEICE TRANSACTIONS on Communications   Vol.E84-B   No.5   pp.1443-1446
Publication Date: 2001/05/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technology
adaptive equalization,  multipath channels,  

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We propose a new structure of decision feedback adaptive equalizer (DFE) suitable for use in mobile radio systems. The proposed structure named Commutating Decision Feedback Equalizer (CDFE) has two DFEs that operate in a commutating fashion; the two DFEs commutate between training and equalization. Such a commutating operation effectively lengthens the equalizer tracking period over time variant channels. Thus, the CDFE has a superior performance over the conventional DFE in fading channels. Simulation results are presented in the paper.