Title :
On the SNR merits of run-length-limited codes in feedback-equalized recording systems
Author :
Bergmans, J.W.M.
Author_Institution :
Philips Res. Lab., Eindhoven, Netherlands
fDate :
8/1/1993 12:00:00 AM
Abstract :
An upper bound is derived for the SNR merits that may be attributed to run-length-limited codes when used in high-density recording systems with optimum mean-square decision feedback equalization. It is argued and exemplified that these merits often lag behind the SNR improvement that uncoded storage would bring about via a reduction of the signaling rate. Losses are quantified for a number of practical codes as well as for maxentropic (d,k) sequences
Keywords :
codes; encoding; equalisers; magnetic recording; magnetic storage; DFE; SNR merits; digital magnetic storage; high-density recording systems; maxentropic (d,k) sequences; optimum mean-square decision feedback equalization; run-length-limited codes; upper bound; Crosstalk; Decision feedback equalizers; Digital modulation; Digital recording; Intersymbol interference; Magneto electrical resistivity imaging technique; Modulation coding; Signal to noise ratio; Timing; Upper bound;
Journal_Title :
Communications, IEEE Transactions on
