NDLI: The performance of focused error control codes

Content Provider	IEEE Xplore Digital Library
Author	Alajaji, F. Fuja, T.
Copyright Year	1972
Abstract	Consider an additive noise channel with inputs and outputs in the field GF(q) where q>2; every time a symbol is transmitted over such a channel, there are q-1 different errors that can occur, corresponding to the q-1 non-zero elements that the channel can add to the transmitted symbol. In many data communication/storage systems, there are some errors that occur much more frequently than others; however, traditional error correcting codes/spl minus/designed with respect to the Hamming metric/spl minus/treat each of these q-1 errors the same. Fuja and Heegard (1990) have designed a class of codes, called focused error control codes, that offer different levels of protection against "common" and "uncommon" errors; the idea is to define the level of protection in a way based not only on the number of errors, but the kind as well. In this paper, the performance of these codes is analyzed with respect to idealized "skewed" channels as well as realistic non-binary modulation schemes. It is shown that focused codes, used is conjunction with PSK and QAM signaling, can provide more than 1.0 dB of additional coding gain when compared with Reed-Solomon codes for small blocklengths.<>
Starting Page	272
Ending Page	280
Page Count	9
File Size	944336
File Format	PDF
ISSN	00906778
Volume Number	42
Issue Number	234
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Error correction Error correction codes Protection Additive noise Data communication Performance analysis Modulation coding Phase shift keying Quadrature amplitude modulation Reed-Solomon codes
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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