TITLE:
Under What Condition Do We Get Improved Equalization Performance in the Residual ISI with Non-Biased Input Signals Compared with the Biased Version
AUTHORS:
Monika Pinchas
KEYWORDS:
Residual ISI, Blind Equalization, Blind Deconvolution
JOURNAL NAME:
Journal of Signal and Information Processing,
Vol.6 No.2,
April
2,
2015
ABSTRACT: Recently, closed-form approximated
expressions were obtained for the residual Inter Symbol Interference (ISI)
obtained by blind adaptive equalizers for the biased as well as for the
non-biased input case in a noisy environment. But, up to now it is unclear
under what condition improved equalization performance is obtained in the
residual ISI point of view with the non-biased case compared with the biased
version. In this paper, we present for the real and two independent quadrature
carrier case a closed-form approximated expression for the difference in the residual
ISI obtained by blind adaptive equalizers with biased input signals compared
with the non-biased case. Based on this expression, we show under what
condition improved equalization performance is obtained from the residual ISI
point of view for the non-biased case compared with the biased version.