Title :
Matched spectral null coding for magnetic recording with a 1+D channel
Author :
Conway, Tom ; Nelson, John
Author_Institution :
Dept. of Electron. & Comput. Eng., Limerick Univ., Ireland
fDate :
1/1/1997 12:00:00 AM
Abstract :
This paper presents an application of Matched Spectral Null (MSN) coding to the magnetic recording channel that allows increased recording densities. A PR1 1+D partial response channel is used in combination with a DC and Nyquist free code to provide coding gain. A Viterbi detector based on the combined trellis of the code and channel is used for decoding. Using this scheme, increased user linear recording density over current PR4 systems can be obtained
Keywords :
decoding; magnetic recording; partial response channels; trellis codes; Nyquist free code; coding gain; combined trellis; decoding; magnetic recording channel; matched spectral null coding; partial response channel; recording densities; user linear recording density; Analytical models; Detectors; Gaussian noise; Magnetic analysis; Magnetic noise; Magnetic recording; Magnetization; Partial response channels; Signal processing; White noise;
Journal_Title :
Magnetics, IEEE Transactions on
