Binomial and monotonic behavior of the probability of undetected error and the 2-r-bound

  • Authors:
  • H. D. Wacker;J. Boercsoek

  • Affiliations:
  • HIMA Paul Hildebrandt GmbH + Co KG, Bruehl, Germany;HIMA Paul Hildebrandt GmbH + Co KG, Bruehl, Germany

  • Venue:
  • WSEAS TRANSACTIONS on COMMUNICATIONS
  • Year:
  • 2008

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Abstract

Proper linear codes play an important role in error detection. They are characterized by an increasing probability of undetected error pue(ε, C) and are considered "good for error detection". A lot of CRCs commonly used to protect data transmission via a variety of field busses are known for being proper. In this paper the weight distribution of proper linear codes on a binary symmetric channel without memory is investigated. A proof is given that its components are upper bounded by the binomial coefficients in a certain sense. Secondly an upper bound of the tail of the binomial is given, and the results are then used to derive estimates of pue(ε, C). If a code is not proper, it would be desirable to have at least subintervals, where pue(ε, C) increases, or where it satisfies the 2-r-bound. It is for this reason that next the range of monotonicity and of the 2-r-bound is determined. Finally, applications on safety integrity levels are studied.