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Distance enhancing codes for E2PRML: performance comparison using spinstand data

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2 Author(s)
McCarthy, S.G. ; Maxtor Corp., Longmont, CO, USA ; Keirn, Z.A.

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

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Magnetics, IEEE Transactions on  (Volume:33 ,  Issue: 5 )