An enumerative coding technique for DC-free runlength-limited sequences

We present an enumerative technique for encoding and decoding DC-free runlength-limited sequences. This technique enables the encoding and decoding of sequences approaching the maxentropic performance bounds very closely in terms of the code rate and low-frequency suppression capability. Use of fini...

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Bibliographic Details
Published in:IEEE transactions on communications Vol. 48; no. 12; pp. 2024 - 2031
Main Authors: Braun, V., Schouhamer immink, K.A.
Format: Journal Article
Language:English
Published: New York IEEE 01.12.2000
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Bit rate
CD recording
Channels
Coding
Decoders
Decoding
Disk recording
Encoders
Encoding
Error correction codes
Floating point arithmetic
Frequency
Hardware
Information theory
Modulation coding
Optical recording
ISSN:0090-6778, 1558-0857
Online Access:Get full text
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Summary:We present an enumerative technique for encoding and decoding DC-free runlength-limited sequences. This technique enables the encoding and decoding of sequences approaching the maxentropic performance bounds very closely in terms of the code rate and low-frequency suppression capability. Use of finite-precision floating-point notation to express the weight coefficients results in channel encoders and decoders of moderate complexity. For channel constraints of practical interest, the hardware required for implementing such a quasi-maxentropic coding scheme consists mainly of a ROM of at most 5 kB.
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ISSN:0090-6778
1558-0857
DOI:10.1109/26.891213