Title :
Precoded PRML, serial concatenation, and iterative (turbo) decoding for digital magnetic recording
Author :
McPheters, Laura L. ; McLaughlin, Steven W. ; Narayanan, Krishna R.
Author_Institution :
Georgia Inst. of Technol., Atlanta, GA, USA
fDate :
9/1/1999 12:00:00 AM
Abstract :
We show that a high rate serially concatenated code used in conjunction with a preceded partial response equalised magnetic recording channel and iterative decoding can provide similar performance to a turbo code on the same channel. The precoded partial response maximum-likelihood (PRML) read channel is incorporated as the inner code of the concatenated coding scheme and the outer code is a high rate convolutional code. Gains of 4.8 dB above conventional PRML at a bit error rate of 10-5 for a rate 13/14 code can be achieved
Keywords :
concatenated codes; convolutional codes; digital magnetic recording; iterative decoding; maximum likelihood detection; partial response channels; turbo codes; 4.8 dB; bit error rate; convolutional code; digital magnetic recording; gain; iterative decoding; partial response maximum likelihood channel; precoded PRML; rate 13/14 code; serial concatenated code; turbo code; Bit error rate; Concatenated codes; Convolutional codes; Digital magnetic recording; Gain; Iterative decoding; Magnetic recording; Maximum likelihood decoding; Performance analysis; Turbo codes;
Journal_Title :
Magnetics, IEEE Transactions on
