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Lossless sliding-block compression of constrained systems

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3 Author(s)
Fan, J.L. ; Dept. of Electr. Eng., Stanford Univ., CA, USA ; Marcus, B.H. ; Roth, R.M.

A method is presented for designing lossless sliding-block compression schemes that map constrained sequences onto unconstrained ones. The new compression scheme is incorporated into a coding technique for noisy constrained channels, which has applications to magnetic and optical storage. As suggested previously by Immink (see ibid., vol.43, p.1389-99, 1997), the use of a lossless compression code can improve the performance of a modified concatenation scheme where the positions of the error-correcting code and constrained code are reversed (primarily in order to eliminate error propagation due to the constrained code). Examples are presented that demonstrate the advantage of using sliding-block compression over block compression in a noisy constrained setting

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Information Theory, IEEE Transactions on  (Volume:46 ,  Issue: 2 )