Multi-directional decision feedback for 2D equalization

Author

Nelson, J.K. ; Singer, A.C. ; Madhow, U.

Author_Institution

Coordinated Sci. Lab., Illinois Univ., Urbana, IL, USA

Volume

4

fYear

2004

fDate

17-21 May 2004

Abstract

We propose an equalization algorithm that employs multiple decision-feedback equalizers (DFE)s operating in different directions and arbitration among the outputs of these equalizers to mitigate the effects of two-dimensional intersymbol interference (ISI). The multi-directional arbitrated DFE (MAD) exploits directional diversity to reduce the effects of error-propagation while maintaining complexity on the same order as a DFE. Simulation results show that, when four DFEs are used, the MAD algorithm can achieve substantial gains over a single DFE, including gains of over 10 dB at 10^-2 BER for simulations in this paper.

Keywords

decision feedback equalisers; diversity reception; intersymbol interference; 10 dB; 2D equalization; 2D intersymbol interference; BER; DFE; ISI; MAD algorithm; directional diversity; equalizer output arbitration; error-propagation effects reduction; multidirectional arbitrated DFE; multidirectional decision feedback; multiple decision-feedback equalizers; Bit error rate; Convolution; Decision feedback equalizers; Degradation; Filters; Intersymbol interference; Iterative algorithms; Maximum likelihood estimation; Mean square error methods; Viterbi algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2004. Proceedings. (ICASSP '04). IEEE International Conference on

ISSN

1520-6149

Print_ISBN

0-7803-8484-9

Type

conf

DOI

10.1109/ICASSP.2004.1326978

Filename

1326978