Best Known (176−90, 176, s)-Nets in Base 2
(176−90, 176, 52)-Net over F2 — Constructive and digital
Digital (86, 176, 52)-net over F2, using
- t-expansion [i] based on digital (85, 176, 52)-net over F2, using
- net from sequence [i] based on digital (85, 51)-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 3 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 (85, 51)-sequence over F2, using
(176−90, 176, 57)-Net over F2 — Digital
Digital (86, 176, 57)-net over F2, using
- t-expansion [i] based on digital (83, 176, 57)-net over F2, using
- net from sequence [i] based on digital (83, 56)-sequence over F2, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F2 with g(F) = 83 and N(F) ≥ 57, using
- net from sequence [i] based on digital (83, 56)-sequence over F2, using
(176−90, 176, 182)-Net over F2 — Upper bound on s (digital)
There is no digital (86, 176, 183)-net over F2, because
- 2 times m-reduction [i] would yield digital (86, 174, 183)-net over F2, but
- extracting embedded orthogonal array [i] would yield linear OA(2174, 183, F2, 88) (dual of [183, 9, 89]-code), but
- residual code [i] would yield linear OA(286, 94, F2, 44) (dual of [94, 8, 45]-code), but
- adding a parity check bit [i] would yield linear OA(287, 95, F2, 45) (dual of [95, 8, 46]-code), but
- “DHM†bound on codes from Brouwer’s database [i]
- adding a parity check bit [i] would yield linear OA(287, 95, F2, 45) (dual of [95, 8, 46]-code), but
- residual code [i] would yield linear OA(286, 94, F2, 44) (dual of [94, 8, 45]-code), but
- extracting embedded orthogonal array [i] would yield linear OA(2174, 183, F2, 88) (dual of [183, 9, 89]-code), but
(176−90, 176, 204)-Net in Base 2 — Upper bound on s
There is no (86, 176, 205)-net in base 2, because
- the generalized Rao bound for nets shows that 2m ≥ 95921 609384 288854 316253 927123 066434 227647 592964 833860 > 2176 [i]