Abstract/Details

Signal-processing for digital magnetic recording channels


1987 1987

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Abstract (summary)

In this dissertation we explore the application of communication theory and information theory to the digital magnetic recording channel. In Chapter 1 we begin with an overview of the recording channel, including descriptions of some of the common signal processing practices used today. In Chapters 2 and 3, variations on the commonly used binary (d,k) codes are introduced. Application of these codes to magnetic recording indicate potential density gains with increased error margins over conventional schemes. The information theoretic limits of a discrete time and a continuous time model of the recording channel are explored in Chapters 4 and 5, respectively. A lower bound on the capacity of a discrete memoryless channel with an M-ary run-length constrained input is given in Chapter 4. In Chapter 5, an upper bound on the capacity of a peak power constrained Gaussian channel is given as a function of certain recording channel parameters. A conjectured lower bound for the same channel is given as well. In Chapter 6, we present a Viterbi detector for a specific modulation/equalization scheme known as compact spectrum. Gains in signal-to-noise ratio are demonstrated. Finally, ideas for future research can be found in Chapter 7.

Indexing (details)


Subject
Electrical engineering
Classification
0544: Electrical engineering
Identifier / keyword
Applied sciences
Title
Signal-processing for digital magnetic recording channels
Author
French, Catherine Anne
Number of pages
200
Publication year
1987
Degree date
1987
School code
0033
Source
DAI-B 49/02, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
Advisor
Wolf, Jack Keil
University/institution
University of California, San Diego
University location
United States -- California
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
8804722
ProQuest document ID
303558440
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/303558440/abstract
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