(d, k/T) Constrained Partial Response Maximum Likelihood Codes
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 chan...
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| Main Authors: | , , |
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| Format: | text |
| Language: | English |
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Institutional Knowledge at Singapore Management University
1995
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| Subjects: | |
| Online Access: | https://ink.library.smu.edu.sg/sis_research/162 http://dx.doi.org/10.1080/00207219508926136 |
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| Institution: | Singapore Management University |
| Language: | English |
| Summary: | 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. |
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