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On the error correcting capability of convolutional codes: Old and new

Publiceringsår: 2002
Språk: Engelska
Sidor: 11-18
Publikation/Tidskrift/Serie: ITG-Fachbericht
Nummer: 170
Dokumenttyp: Konferensbidrag
Förlag: VDI Verlag GmbH


A brief introduction to convolutional coding is given. The active distances are reviewed and shown to be an important tool for analyzing the error correcting capability of maximum-likelihood (ML) decoding of convolutional codes when communicating over a binary symmetric channel (BSC). Due to memory and delay constraints in practical coding schemes, convolutional codes often are either terminated or decoded by a window decoder. When a window decoder is used, the convolutional code sequence is not terminated; instead, the window decoder estimates the information digits after receiving a finite number of noise corrupted code symbols, thereby keeping the decoding delay short. A characterization of the error correcting capability of window decoded convolutional codes is given by using the active distances.



  • Technology and Engineering


4th International ITG Conference on Source and Channel Coding
Berlin, Germany
  • ISSN: 0932-6022

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