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Maximum likelihood decoding of block codes on (1-D) partial response channels

Research output: Contribution in Book/Report/ProceedingsPaper

Published

Publication date1995
Host publicationInformation Theory, 1995. Proceedings., 1995 IEEE International Symposium on
Place of publicationWhistler, British Columbia, Canada
PublisherIEEE
Pages142
ISBN (Print)0-7803-2453-6
Original languageEnglish

Abstract

A novel technique for trellis decoding of block both run length limited (RLL) and balanced codes on PR channels is described. The technique allows performance improvement without increment of decoder complexity. A simple technique for constructing RLL block error control codes (ECC) together with their minimal trellises is introduced. The procedure adapted for the design of such codes is based on taking a linear ECC and incorporating a maximum run length constraint by carefully modifying the basis code while retaining the minimum distance properties of the parent code. Such codes are particularly suited for magnetic recording applications where the (1-D) partial response (PR) channel provides a good model at low information density rates.