Kc. Indukumar et al., Performance comparison of a class of multi-level DFE and PRML detectors inthe presence of channel nonlinearities, IEEE MAGNET, 35(5), 1999, pp. 2283-2285
Nonlinear transition shift (NLTS) and partial erasure (PE) are two channel
nonlinearities that degrade bit-error-rate (BER) performance of detectors a
t high densities. In this paper, we compare BER performances of partial res
ponse maximum-likelihood (PRML) detectors developed for (0, k) run-length-l
imited (RLL) coded channels with multi-level DFE (MDFE) family detectors at
different levels of nonlinearity. Bit-by-bit simulations indicate that the
MDFE family detectors are relatively robust to NLTS and PE compared to the
PRML detectors. Results also show that the M3DFE detector, an advanced det
ector in the MDFE family, outperforms the other detectors at high densities
under channel nonlinearities.