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

Rolf Johannesson, Per Ståhl

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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
Original languageEnglish
Pages (from-to)1653-1658
JournalIEEE Transactions on Information Theory
Volume45
Issue number5
DOIs
Publication statusPublished - 1999

Subject classification (UKÄ)

  • Electrical Engineering, Electronic Engineering, Information Engineering

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