Lexicographical encoding and decoding of state-dependent codes

Details Lexicographical encoding and decoding of state-dependent codes Lexicographical encoding and decoding of state-dependent codes

1991-03-15

1993-05-04

Kuntz, Curtis

Pulse or digital communications

Repeaters

Testing

375 18, H04B 1404

Patent

active

052088340

ABSTRACT:
A method and apparatus for (1) reducing storage requirements by use of novel encoding/decoding lexicographically code and decode state-dependent codes, and (2) locally reordering coded subsequences to permit direct NRZ coding, which is especially desirable when using PRML sequence detection.

REFERENCES:
patent: 4870414 (1989-09-01), Karabed et al.
patent: 4888779 (1989-12-01), Karabed et al.
D. T. Tang and L. R. Bahl, "Block Codes for a Class of Constrained Noiseless Channels", Information Control, No. 17, 1970.
G. F. M. Beekner and K A. S. Immink, "A Generalized Method for Encoding and Decoding Run-Lenth-Limited Binary Sequences", IEEE Transactions on Information Theory, vol. IT-29, No. 5, 1983.
R. F. Lyon, IEEE Transactions on Communications, COM-21, 1438, 1973.
K. A. S. Immink, "Spectrum Shaping with Binary DC.sup.2 -Constrained Codes" Phillip Journal of Research, vol. 40, No. 1, 1985.
"Principle of Digital Communication and Coding", Andrew G. Viterbai, McGraw Hill, 1979, pp. 227-272.

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