Adaptive continuous-time forward equalization for DFE-based disk-drive read channels
- 19 November 2002
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 1 (10586393) , 668-672
- https://doi.org/10.1109/acssc.1995.540633
Abstract
A continuous-time forward equalizer for use with decision-feedback equalization (DFE) is proposed which exploits correlation between the disk-drive readback signal and its derivative. The performance of the one-zero equalizer is derived for an infinite-length DFE and a 4-tap DFE and is shown to perform as well as a 5-tap finite-impulse-response (FIR) filter for PW/sub 50/=2 T. Finally a possible adaptive implementation is presented along with a simulation of its convergence with the sign-sign least-mean-square (LMS) algorithm. The proposed equalizer will provide a large savings in die area and power over digital methods.Keywords
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