Woven convolutional codes I: Encoder properties
Författare
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.
Publiceringsår
2002
Språk
Engelska
Sidor
149-161
Publikation/Tidskrift/Serie
IEEE Transactions on Information Theory
Volym
48
Issue
1
Dokumenttyp
Artikel i tidskrift
Förlag
IEEE - Institute of Electrical and Electronics Engineers Inc.
Ämne
- Electrical Engineering, Electronic Engineering, Information Engineering
Nyckelord
- minimal convolutional encoders
- concatenated convolutional codes
- free distance
- active distances
- woven convolutional codes
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0018-9448