A Family of Equalizers for Optimal Sequence Detection

Author

Venkataramani, Raman ; Erden, M. Fatih

Author_Institution

Seagate Res., Pittsburgh, PA

Volume

4

fYear

2006

fDate

14-19 May 2006

Abstract

We present a family of equalizers and targets for certain intersymbol interference (ISI) channels with the property that the performance of a maximum-likelihood (ML) or maximum a posteriori (MAP) based detector for the target channel is also simultaneously optimal for the equalized channel. In particular, the MMSE decision feedback equalizer (DFE) belongs to this family of filters. Although, these solutions are infinite impulse response (IIR) filters, we can achieve good performance using finite impulse response (FIR) filters. We present an algorithm for designing equalizers and FIR targets that minimize the probability of sequence detection error

Keywords

FIR filters; IIR filters; decision feedback equalisers; error statistics; intersymbol interference; least mean squares methods; maximum likelihood detection; DFE; FIR; IIR filters; ISI channels; MMSE; decision feedback equalizer; equalizers; finite impulse response filters; infinite impulse response filters; intersymbol interference channels; maximum a posteriori detector; maximum-likelihood detector; optimal sequence detection; sequence detection error probability; Decision feedback equalizers; Detectors; Finite impulse response filter; IIR filters; Intersymbol interference; Magnetic noise; Maximum likelihood detection; Power system modeling; Random processes; Viterbi algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on

Conference_Location

Toulouse

ISSN

1520-6149

Print_ISBN

1-4244-0469-X

Type

conf

DOI

10.1109/ICASSP.2006.1661035

Filename

1661035