NDLI: Partial-response decoding of rate 1/2 modulation codes for digital storage

Content Provider	IEEE Xplore Digital Library
Author	Bergmans, J.W.M. Mita, S. Izumita, M. Doi, N.
Copyright Year	1989
Description	Author affiliation: Philips Res. Lab., Eindhoven, Netherlands (Bergmans, J.W.M.)
Abstract	In digital storage systems, receivers for rate 1/2 modulation codes are usually oversampled by a factor of two with respect to the data stream that they attempt to reconstruct. It is shown that oversampling can be avoided by detecting a decimated ternary signal, from which the original data can be recovered by a simple decoder. A method is described to find all such decoders for a given rate 1/2 code. Examples treated are modified frequency modulation, Miller-squared, and two-to-seven. Mean-square performances of the old and new reception schemes are compared for a Lorentzian channel. The relative merits are found to depend quite heavily on the information density. The results obtained seem to contradict the belief that high-density performance benefits from a large minimum run length.<>
Starting Page	1633
Ending Page	1637
File Size	420140
Page Count	5
File Format	PDF
DOI	10.1109/ICC.1989.49953
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1989-06-11
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Decoding Digital modulation Modulation coding Convergence Magnetic force microscopy Signal mapping Additive noise Frequency modulation Sampling methods Adaptive filters
Content Type	Text
Resource Type	Article

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