Systematic Unidirectional Error-Detecting Codes

  • Authors:
  • Bella Bose;Der J. Lin

  • Affiliations:
  • Oregon State Univ., Corvallis;Oregon State Univ., Corvallis

  • Venue:
  • IEEE Transactions on Computers
  • Year:
  • 1985

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Abstract

The theory and design of systematic t-unidirectional error-detecting codes are developed. Optimal systematic codes capable of detecting 2, 3, and 6 unidirectional errors using 2, 3, and 4 check bits, respectively, are given. For r =5 where r is the number of check bits, the systematic codes described here can detect up to 5· 2r-4 + r -4 unidirectional errors. Encoding/ decoding methods for these codes are also investigated.