Decision feedback equalization for run-length-limited codes with d=1

This paper provides a survey of decision feedback equalization for runlength-limited modulation codes with minimum run-length parameter d=1. The survey covers existing approaches such as the zero-forcing and multi-level decision feedback equalizer, as well as a novel one which exploits two pre-cursive intersymbol interference components. Performances of these approaches are analyzed mathematically, and are pitted against those of (1,7)ML and EEPRML for a Lorentzian channel.