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Woven convolutional codes I: Encoder properties

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Author

Summary, in English

Encoders for convolutional codes with large free distances can be constructed by combining several less powerful convolutional encoders. This paper is devoted to constructions in which the constituent convolutional codes are woven together in a manner that resembles the structure of a fabric. The general construction is called twill and it is described together with two special cases, viz., woven convolutional encoders with outer warp and with inner warp. The woven convolutional encoders inherit many of their structural properties, such as minimality and catastrophicity, from their constituent encoders. For all three types of woven convolutional codes upper and lower bounds on their free distances as well as lower bounds on the active distances of their encoders are derived.

Publishing year

2002

Language

English

Pages

149-161

Publication/Series

IEEE Transactions on Information Theory

Volume

48

Issue

1

Document type

Journal article

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • minimal convolutional encoders
  • concatenated convolutional codes
  • free distance
  • active distances
  • woven convolutional codes

Status

Published

ISBN/ISSN/Other

  • ISSN: 0018-9448