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Precoded PRML, serial concatenation, and iterative (turbo) decoding for digital magnetic recording

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3 Author(s)
L. L. McPheters ; Georgia Inst. of Technol., Atlanta, GA, USA ; S. W. McLaughlin ; K. R. Narayanan

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

Published in:

IEEE Transactions on Magnetics  (Volume:35 ,  Issue: 5 )