Decision-Feedback Turbo Equalization for Coded Intersymbol Interference Channels

Author

Qin, Zhiliang

Author_Institution

Div. of Mechatronics & Recording Channel, Data Storage Inst.

fYear

2006

fDate

24-26 May 2006

Firstpage

1

Lastpage

5

Abstract

The turbo equalizer based on the BCJR algorithm has an exponential computational complexity in terms of channel memory length. In this paper, we propose a low-complexity soft-input/soft-output (SISO) channel detector for intersymbol interference (ISI) channels based on tentative hard estimates fed back from the outer decoder in the previous iteration. It is shown that the proposed detector can greatly reduce the complexity with a negligible performance loss compared to the BCJR algorithm

Keywords

channel coding; decision feedback equalisers; intersymbol interference; turbo codes; SISO channel detector; channel memory length; coded intersymbol interference channels; decision-feedback turbo equalization; exponential computational complexity; soft-input/soft-output channel detector; turbo equalizer; AWGN; Computational complexity; Decision feedback equalizers; Detectors; Interference cancellation; Intersymbol interference; Iterative algorithms; Iterative decoding; Maximum likelihood detection; Performance loss;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics and Applications, 2006 1ST IEEE Conference on

Conference_Location

Singapore

Print_ISBN

0-7803-9513-1

Electronic_ISBN

0-7803-9514-X

Type

conf

DOI

10.1109/ICIEA.2006.257134

Filename

4025752