Method and apparatus for implementing optimum PRML codes

Details Method and apparatus for implementing optimum PRML codes Method and apparatus for implementing optimum PRML codes

1986-04-24

1987-11-17

Shoop, Jr., William M.

Communications: electrical

Audible indication

Percussion-type sound producer

H03M 700

Patent

active

047076810

ABSTRACT:
Rate 8/9, constrained codes having run length limitation parameters (0, 4/4) and (0, 3/6) are provided for any partial response (PR) signalling system employing maximum likelihood (ML) detection.

REFERENCES:
patent: 4567464 (1986-01-01), Siegel et al.
Kabal et al, "Partial-Response Signaling", IEEE Trans. on Comm., vol. COM-23, No. 9, Sep. 1975.
Forney, "The Viterbi Algorithm", Proc. of the IEEE, vol. 61, No. 3, 3/73.
Forney, "Maximum-Likelihood Sequence Estimation of Digital Sequences in the Presence of Intersymbol Interference", IEEE Trans. on Info. Theory, vol. IT-18, No. 3, May 1972.
Kobayashi, "Application of Probabilistic Decoding to Digital Magnetic Recording Systems", IBM J. Res. Develop., Jan. 1971.
Nishimura et al, "A Design Method for Optimum Equalization in Magnetic Recording with Partial Response Channel Coding", IEEE Trans. on Mag., vol. MAG-19, No. 5, Sep. 1983.
Patel, "Improved Encoder and Decoder for a Byte-Oriented (0,3) 8/9 Code", IBM Tech. Discl. Bulletin, vol. 28, No. 5, Oct. 1985, pp. 1938-1940.
Patel, "Encoder & Decoder for a Byte-Oriented (0,3) 8/9 Code", IBM Tech. Discl. Bulletin, vol. 18, No. 1, Jun. 1975, pp. 248-251.

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