Title :
Distance enhancing codes for E2PRML: performance comparison using spinstand data
Author :
McCarthy, Steven G. ; Keirn, Zachary A.
Author_Institution :
Maxtor Corp., Longmont, CO, USA
fDate :
9/1/1997 12:00:00 AM
Abstract :
Two new RLL encoding schemes for the E2PR4 recording channel are analyzed experimentally. These codes, employing a d=0 run length constraint, simplify the detector complexity while achieving a higher code rate than the traditional (1,7) recording code. They also maintain the same minimum squared distance, d2=10, as the (1,7) code. Using spin-stand data from an MR head, the new codes show an order of magnitude improvement in BER over (1,7) coded data in the range of UBD=2.2 to 2.6
Keywords :
channel coding; coding errors; magnetic heads; magnetic recording; magnetoresistive devices; maximum likelihood detection; partial response channels; runlength codes; trellis codes; BER; E2PR4 recording channel; E2PRML; MR head; RLL encoding schemes; code rate; d=0 run length constraint; detector complexity simplification; distance enhancing codes; maximum transition run code; minimum squared distance; partial response polynomials; performance comparison; spinstand data; Bit error rate; Clocks; Code standards; Detectors; Error analysis; Finite impulse response filter; Magnetic heads; Optical signal processing; Oscilloscopes; Solids;
Journal_Title :
Magnetics, IEEE Transactions on
