Improved Two-Point Codes on Hermitian Curves

  • Authors:
  • I. M. Duursma;R. Kirov

  • Affiliations:
  • Dept. of Math., Univ. of Illinois at Urbana-Champaign, Urbana, IL, USA;-

  • Venue:
  • IEEE Transactions on Information Theory
  • Year:
  • 2011

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Abstract

One-point codes on the Hermitian curve produce long codes with excellent parameters. Feng and Rao introduced a modified construction that improves the parameters while still using one-point divisors. A separate improvement of the parameters was introduced by Matthews considering the classical construction but with two-point divisors. Those two approaches are combined to describe an elementary construction of two-point improved codes. Upon analysis of their minimum distance and redundancy, it is observed that they improve on the previous constructions for a large range of designed distances.