MinT - Best Known (18, 18+23, s)-Nets in Base 256

Best Known (18, 18+23, s)-Nets in Base 256

(18, 18+23, 771)-Net over F₂₅₆ — Constructive and digital

Digital (18, 41, 771)-net over F₂₅₆, using

generalized (u,Â u+v)-construction [i] based on
1. digital (0, 7, 257)-net over F₂₅₆, using
  - net from sequence [i] based on digital (0, 256)-sequence over F₂₅₆, using
    - generalized Faure sequence [i]
    - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₂₅₆ with g(F) = 0 and N(F) ≥ 257, using
      - the rational function field F₂₅₆(x) [i]
    - Niederreiter sequence [i]
2. digital (0, 11, 257)-net over F₂₅₆, using
  - net from sequence [i] based on digital (0, 256)-sequence over F₂₅₆ (see above)
3. digital (0, 23, 257)-net over F₂₅₆, using
  - net from sequence [i] based on digital (0, 256)-sequence over F₂₅₆ (see above)

(18, 18+23, 1285)-Net over F₂₅₆ — Digital

Digital (18, 41, 1285)-net over F₂₅₆, using

embedding of OOA with Gilbertâ€“VarÅ¡amov bound [i] based on linear OA(256⁴¹, 1285, F₂₅₆, 23) (dual of [1285, 1244, 24]-code), using
- the BCH-code C(I) with length 1285Â | 256²âˆ’1, defining interval IÂ =Â {1,78,155,…,410}, and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 24 [i]

(18, 18+23, large)-Net in Base 256 — Upper bound on s

There is no (18, 41, large)-net in base 256, because

21 times m-reduction [i] would yield (18, 20, large)-net in base 256, but
- mutually orthogonal hypercube bound [i]