(d, k/T) Constrained Partial Response Maximum Likelihood Codes

Publication Type

Journal Article

Publication Date

1-1995

Abstract

A new set of constrained codes, referred to as (d, k/l) constrained partial response maximum likelihood (PRML) codes, is proposed. These new constrained codes combine the benefits of both (d, k) run length limited codes and (0, k/l) PRML codes, with seemingly promising applications in PRML read channels for today's head/media combinations, using thin-film media and inductive read heads. The rules for generating any (d, k/l) code are presented, the Shannon capacity is tabulated for the codes of practical interest with d= 1 and 2, and the encoding finite state transition diagram and state-independent decoder are designed for a rate 1/2, (1, 7/6) code. Some differences among (d, k) codes, (0, k/l) codes, (0, k/l/M) codes and (d, k/l) codes are also addressed.

Keywords

CODING theory, DECODERS (Electronics)

Discipline

Computer Sciences | Information Security

Research Areas

Information Security and Trust

Publication

International Journal of Electronics

Volume

78

Issue

1

First Page

19

Last Page

24

ISSN

0020-7217

Identifier

10.1080/00207219508926136

Publisher

Taylor and Francis

Additional URL

http://dx.doi.org/10.1080/00207219508926136

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