Best Known (163−82, 163, s)-Nets in Base 2
(163−82, 163, 51)-Net over F2 — Constructive and digital
Digital (81, 163, 51)-net over F2, using
- t-expansion [i] based on digital (80, 163, 51)-net over F2, using
- net from sequence [i] based on digital (80, 50)-sequence over F2, using
- Niederreiter–Xing sequence construction III based on the algebraic function field F/F2 with g(F) = 69, N(F) = 48, 1 place with degree 2, and 2 places with degree 6 [i] based on function field F/F2 with g(F) = 69 and N(F) ≥ 48, using an explicitly constructive algebraic function field [i]
- net from sequence [i] based on digital (80, 50)-sequence over F2, using
(163−82, 163, 56)-Net over F2 — Digital
Digital (81, 163, 56)-net over F2, using
- t-expansion [i] based on digital (80, 163, 56)-net over F2, using
- net from sequence [i] based on digital (80, 55)-sequence over F2, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F2 with g(F) = 80 and N(F) ≥ 56, using
- net from sequence [i] based on digital (80, 55)-sequence over F2, using
(163−82, 163, 173)-Net over F2 — Upper bound on s (digital)
There is no digital (81, 163, 174)-net over F2, because
- extracting embedded orthogonal array [i] would yield linear OA(2163, 174, F2, 82) (dual of [174, 11, 83]-code), but
- residual code [i] would yield linear OA(281, 91, F2, 41) (dual of [91, 10, 42]-code), but
- 1 times truncation [i] would yield linear OA(280, 90, F2, 40) (dual of [90, 10, 41]-code), but
- residual code [i] would yield linear OA(240, 49, F2, 20) (dual of [49, 9, 21]-code), but
- 1 times truncation [i] would yield linear OA(280, 90, F2, 40) (dual of [90, 10, 41]-code), but
- residual code [i] would yield linear OA(281, 91, F2, 41) (dual of [91, 10, 42]-code), but
(163−82, 163, 198)-Net in Base 2 — Upper bound on s
There is no (81, 163, 199)-net in base 2, because
- the generalized Rao bound for nets shows that 2m ≥ 11 988626 988566 100531 431418 161553 000284 676659 768640 > 2163 [i]