Long extended BCH codes are spanned by minimum weight words

  • Authors:
  • Tali Kaufman;Simon Litsyn

  • Affiliations:
  • MIT Computer Science and Artificial Intelligence Laboratory (CSAIL), Cambridge, MA;Department of Electrical Engineering-Systems, Tel Aviv University, Tel Aviv, Israel

  • Venue:
  • AAECC'06 Proceedings of the 16th international conference on Applied Algebra, Algebraic Algorithms and Error-Correcting Codes
  • Year:
  • 2006

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Abstract

It is shown that long enough extended t-error correcting BCH codes Btare spanned by its lightest words of weight 2t + 2. The proof follows from an upper bound on the number of words of weight 2t + 2 in any subcode of Btof codimension 1.