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Codes with multi-level error-correcting capabilitiesIn conventional channel coding, all the information symbols of a message are regarded equally significant, and hence codes are devised to provide equal protection for each information symbol against channel errors. However, in some circumstances, some information symbols in a message are more significant than the other symbols. As a result, it is desirable to devise codes with multilevel error-correcting capabilities. In this paper, block codes with multilevel error correcting capabilities, which are also known as unequal error protection (UEP) codes, are investigated. Several classes of UEP codes are constructed. One class of codes satisfies the Hamming bound on the number of parity-check symbols for systematic linear UEP codes and hence is optimal.
Document ID
19910043532
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Lin, Mao-Chao
(National Taiwan University Taipei, Republic of China, United States)
Lin, Shu
(Hawaii, University Honolulu, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Publication Information
Publication: Discrete Mathematics
Volume: 83
ISSN: 0012-365X
Subject Category
Numerical Analysis
Accession Number
91A28155
Funding Number(s)
CONTRACT_GRANT: NSF DCI-84-18248
CONTRACT_GRANT: NAG5-407
Distribution Limits
Public
Copyright
Other

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