NDLI: Encoding of intervals with conditional coding

Content Provider	IEEE Xplore Digital Library
Author	Graf, U.
Copyright Year	1997
Description	Author affiliation: Inst. of Theor. Comput. Sci., Tech. Hochschule Darmstadt, Germany (Graf, U.)
Abstract	Summary form only given. With conditional coding a new technique is presented that encodes equally likely symbols of an input alphabet A (\|A\|=m) efficiently. The code consists of bitstrings with size n=[log/sub 2/(m)] and (n+1) and is a prefix code. The encoding needs only one comparison, one shift, and one addition per encoded symbol. Compared to the theoretical limit the method loses only at most 0.086071... bits per encoding and 0.057304... bits in average. Opposed to radix conversion (which achieves the theoretical limit) the algorithm works without multiplication and division and does not need a single-bit writing loop or bitstring arithmetic in the encoding step. Therefore it works a lot faster than radix conversion and can easily be implemented in hardware. The decoding step has the same properties. Encoding and decoding can be exchanged for better adaption to the code alphabet size.
File Size	73484
File Format	PDF
ISBN	0818677619
ISSN	10680314
DOI	10.1109/DCC.1997.582097
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-03-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Encoding Arithmetic Decoding Computer science Writing Hardware Binary sequences Uniform resource locators World Wide Web
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications

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