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Blind adaptive decision feedback equalization: A class of channels resulting in ill-convergence from a zero initialization

✍ Scribed by Raúl A. Casas; C. Richard Johnson Jr.; Rodney A. Kennedy; Zhi Ding; Roberto Malamut

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 291 KB
Volume: 12
Category: Article
ISSN: 0890-6327
DOI: 10.1002/(sici)1099-1115(199803)12:2<173::aid-acs486>3.0.co;2-v

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✦ Synopsis

This paper addresses the ill-convergence of blind adaptive decision feedback equalizers using the decisiondirected algorithm under a zero initialization. In particular, the paper identiÿes analytically a class of channels for which the adaptive equalizer parameters converge to an undesired minimum where incorrect decision estimates can be made under zero noise. This misbehaviour occurs despite the existence of a DFE parameter setting that perfectly equalizes the channel. ?