DocumentCode
915472
Title
Convolutional codes over GF(4) for 4-ary distance-invariant CPFSK signalling
Author
Ugrelidze, N.A. ; Shavgulidze, S.A. ; Asanidze, 1.G.
Author_Institution
Inst. of Commun., Georgian Tech. Univ., Tbilisi, Georgia
Volume
29
Issue
12
fYear
1993
fDate
6/10/1993 12:00:00 AM
Firstpage
1104
Abstract
Combinations of new convolutional codes over GF(4) and 4-ary distance-invariant CPFSK modulation are considered. The best codes that ensure maximum free Euclidean distance in signal space are given in a Table. The convolutional codes are termed, ´concordant´ because their trellis diagram topologically coincides with the joint signal-code trellis diagram.
Keywords
convolutional codes; frequency shift keying; telecommunication signalling; trellis codes; 4-ary distance-invariant CPFSK signalling; CPFSK modulation; GF(4); concordant codes; convolutional codes; joint signal-code trellis diagram; maximum free Euclidean distance; signal space; trellis diagram;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19930736
Filename
220832
Link To Document