MinT - Information on Result #1083963

Information on Result #1083963

Linear OOA(256⁶⁸, 2097667, F₂₅₆, 4, 18) (dual of [(2097667, 4), 8390600, 19]-NRT-code), using (u,Â u+v)-construction based on

linear OOA(256¹⁶, 517, F₂₅₆, 4, 9) (dual of [(517, 4), 2052, 10]-NRT-code), using
- (u,Â u+v)-construction [i] based on
  1. linear OOA(256⁵, 258, F₂₅₆, 4, 4) (dual of [(258, 4), 1027, 5]-NRT-code), using
    - appending kth column [i] based on linear OOA(256⁵, 258, F₂₅₆, 3, 4) (dual of [(258, 3), 769, 5]-NRT-code), using
      - extracting embedded OOA [i] based on digital (1, 5, 258)-net over F₂₅₆, using
        net from sequence [i] based on digital (1, 257)-sequence over F₂₅₆, using
        Niederreiter sequence [i]
  2. linear OOA(256¹¹, 259, F₂₅₆, 4, 9) (dual of [(259, 4), 1025, 10]-NRT-code), using
    - extracting embedded OOA [i] based on digital (2, 11, 259)-net over F₂₅₆, using
      - net from sequence [i] based on digital (2, 258)-sequence over F₂₅₆, using
        Niederreiter sequence [i]
linear OOA(256⁵², 2097150, F₂₅₆, 4, 18) (dual of [(2097150, 4), 8388548, 19]-NRT-code), using
- OOA 4-folding [i] based on linear OA(256⁵², 8388600, F₂₅₆, 18) (dual of [8388600, 8388548, 19]-code), using
  - discarding factors / shortening the dual code based on linear OA(256⁵², large, F₂₅₆, 18) (dual of [large, large−52, 19]-code), using
    - the primitive expurgated narrow-sense BCH-code C(I) with length 16777215Â = 256³âˆ’1, defining interval IÂ =Â [0,17], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 19 [i]

Mode: Constructive and linear.

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