A note on type II convolutional codes
Authors:
- P. StahlPSP. Stahl
- E. WittenmarkEWE. Wittenmark
- 1 July 2000
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Information Theory
- Vol. 46 (4) , 1510-1514
Abstract
The result of a search for the world's second type II (doubly-even and self-dual) convolutional code is reported. A rate R=4/8, 16-state, time-invariant, convolutional code with free distance dfree=8 was found to be type II. The initial part of its weight spectrum is better than that of the Golay convolutional code (GCC). Generator matrices and path weight enumerators for some other type II convolutional codes are given. By the “wrap-around” technique tail-biting versions of (32, 18, 8) Type II block codes are constructeKeywords
This publication has 7 references indexed in Scilit:
- Minimal tail-biting trellises: the Golay code and moreIEEE Transactions on Information Theory, 1999
- New rate 1/2, 1/3, and 1/4 binary convolutional encoders with an optimum distance profileIEEE Transactions on Information Theory, 1999
- Fundamentals of Convolutional Coding1999
- Shadow bounds for self-dual codesIEEE Transactions on Information Theory, 1998
- Trellises and Trellis-Based Decoding Algorithms for Linear Block Codes1998
- Dimension/length profiles and trellis complexity of linear block codesIEEE Transactions on Information Theory, 1994
- The binary self-dual codes of length up to 32: A revised enumerationJournal of Combinatorial Theory, Series A, 1992