DocumentCode
1522626
Title
New rate 1/2, 1/3, and 1/4 binary convolutional encoders with an optimum distance profile
Author
Johannesson, Rolf ; Ståhl, Per
Author_Institution
Dept. of Inf. Technol., Lund Univ., Sweden
Volume
45
Issue
5
fYear
1999
fDate
7/1/1999 12:00:00 AM
Firstpage
1653
Lastpage
1658
Abstract
Tabulations of binary systematic and nonsystematic polynomial convolutional encoders with an optimum distance profile for rate 1/2, 1/3, and 1/4 are given. The reported encoders are found by computer searches that optimize over the weight spectra. The free distances for rate 1/3 and 1/4 are compared with Heller´s (1968) and Griesmer´s (1960) upper bounds
Keywords
binary codes; convolutional codes; binary nonsystematic polynomial convolutional encoders; binary systematic polynomial convolutional encoders; code rate; computer searches; free distances; optimum distance profile; upper bounds; weight spectra; Concatenated codes; Convolutional codes; Error probability; IEEE Press; Information theory; Lakes; Maximum likelihood decoding; Polynomials; Reliability theory; Viterbi algorithm;
fLanguage
English
Journal_Title
Information Theory, IEEE Transactions on
Publisher
ieee
ISSN
0018-9448
Type
jour
DOI
10.1109/18.771238
Filename
771238
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