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Symbol error probability for guided scrambling over a recording channel

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1 Author(s)
Kunisa, A. ; Digital Syst. Dev. Center, Sanyo Electr. Co. Ltd., Tokyo, Japan

We derive expressions for the symbol error probabilities for a recording code concatenated with a Reed-Solomon (RS) code. The recording code is structured by a guided scrambling (GS) code for the direct current (DC) suppression in conjunction with a runlength-limited (RLL) code. As for the GS codes, convolutional GS and Galois field (GF) addition GS schemes are examined. As for the RLL codes, two types of RLL codes are investigated. One is a traditional RLL code where a bit length m of an RS symbol is an integer multiple of a bit length p of an RLL source symbol. The other is a new type of high-rate RLL code where p>m. We compute the RS symbol error rates when these RLL codes are combined with the two GS schemes.

Published in:

Information Theory, IEEE Transactions on  (Volume:50 ,  Issue: 2 )