New rate 1/2, 1/3, and 1/4 binary convolutional encoders with an optimum distance profile

Authors
Johannesson, R Stahl, P
Citation
R. Johannesson et P. Stahl, New rate 1/2, 1/3, and 1/4 binary convolutional encoders with an optimum distance profile, IEEE INFO T, 45(5), 1999, pp. 1653-1658
Citations number
8
Categorie Soggetti
Information Tecnology & Communication Systems
Journal title
IEEE TRANSACTIONS ON INFORMATION THEORY
ISSN journal
00189448 → ACNP
Volume
45
Issue
5
Year of publication
1999
Pages
1653 - 1658
Database
ISI
SICI code
0018-9448(199907)45:5<1653:NR11A1>2.0.ZU;2-P
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 g iven. The reported encoders are found by computer searches that optimize ov er the weight spectra. The free distances for rate 1/3 and 1/4 are compared with Heller's and Griesmer's upper bounds.