Please use this identifier to cite or link to this item: https://doi.org/10.1109/20.914383
Title: Techniques for minimizing error propagation in decision feedback detectors for recording channels
Authors: Zhao, F.
Mathew, G. 
Farhang-Boroujeny, B. 
Keywords: Decision feedback equalization
DFE
Error propagation
Magnetic recording
Issue Date: Jan-2001
Citation: Zhao, F., Mathew, G., Farhang-Boroujeny, B. (2001-01). Techniques for minimizing error propagation in decision feedback detectors for recording channels. IEEE Transactions on Magnetics 37 (1 II) : 592-602. ScholarBank@NUS Repository. https://doi.org/10.1109/20.914383
Abstract: Decision feedback equalization (DFE) is a low-cost approach for signal detection in magnetic recording channels. However, it suffers from the phenomenon of error propagation (EP). In this paper, two approaches are proposed for minimizing EP in DFE. The first approach imposes appropriate constraints on the feedback equalizer. The second approach uses simple threshold techniques to detect the presence of decision errors and to either correct these errors or minimize the possibility of further errors. Computer simulations show that the proposed techniques reduce EP very significantly. Theoretical analyses of the threshold techniques are presented to quantify the associated false and correct detection probabilities. By combining the analysis with an existing EP simulation method, a fast simulation procedure is derived for estimating EP and bit error rate (BER).
Source Title: IEEE Transactions on Magnetics
URI: http://scholarbank.nus.edu.sg/handle/10635/71948
ISSN: 00189464
DOI: 10.1109/20.914383
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