English

A linear construction for certain Kerdock and Preparata codes

Combinatorics 2009-09-25 v1 Information Theory math.IT

Abstract

The Nordstrom-Robinson, Kerdock, and (slightly modified) Pre\- parata codes are shown to be linear over \ZZ4\ZZ_4, the integers mod 4\bmod~4. The Kerdock and Preparata codes are duals over \ZZ4\ZZ_4, and the Nordstrom-Robinson code is self-dual. All these codes are just extended cyclic codes over \ZZ4\ZZ_4. This provides a simple definition for these codes and explains why their Hamming weight distributions are dual to each other. First- and second-order Reed-Muller codes are also linear codes over \ZZ4\ZZ_4, but Hamming codes in general are not, nor is the Golay code.

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Cite

@article{arxiv.math/9310227,
  title  = {A linear construction for certain Kerdock and Preparata codes},
  author = {A. R. Calderbank and A. Roger Hammons and P. Vijay Kumar and N. J. A. Sloane and Patrick Solé},
  journal= {arXiv preprint arXiv:math/9310227},
  year   = {2009}
}

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5 pages