Best Known (180, 180+36, s)-Nets in Base 2
(180, 180+36, 490)-Net over F2 — Constructive and digital
Digital (180, 216, 490)-net over F2, using
- 21 times duplication [i] based on digital (179, 215, 490)-net over F2, using
- trace code for nets [i] based on digital (7, 43, 98)-net over F32, using
- net from sequence [i] based on digital (7, 97)-sequence over F32, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F32 with g(F) = 7 and N(F) ≥ 98, using
- net from sequence [i] based on digital (7, 97)-sequence over F32, using
- trace code for nets [i] based on digital (7, 43, 98)-net over F32, using
(180, 180+36, 1244)-Net over F2 — Digital
Digital (180, 216, 1244)-net over F2, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(2216, 1244, F2, 3, 36) (dual of [(1244, 3), 3516, 37]-NRT-code), using
- discarding factors / shortening the dual code based on linear OOA(2216, 1365, F2, 3, 36) (dual of [(1365, 3), 3879, 37]-NRT-code), using
- OOA 3-folding [i] based on linear OA(2216, 4095, F2, 36) (dual of [4095, 3879, 37]-code), using
- discarding factors / shortening the dual code based on linear OA(2216, 4096, F2, 36) (dual of [4096, 3880, 37]-code), using
- 1 times truncation [i] based on linear OA(2217, 4097, F2, 37) (dual of [4097, 3880, 38]-code), using
- the expurgated narrow-sense BCH-code C(I) with length 4097 | 224−1, defining interval I = [0,18], and minimum distance d ≥ |{−18,−17,…,18}|+1 = 38 (BCH-bound) [i]
- 1 times truncation [i] based on linear OA(2217, 4097, F2, 37) (dual of [4097, 3880, 38]-code), using
- discarding factors / shortening the dual code based on linear OA(2216, 4096, F2, 36) (dual of [4096, 3880, 37]-code), using
- OOA 3-folding [i] based on linear OA(2216, 4095, F2, 36) (dual of [4095, 3879, 37]-code), using
- discarding factors / shortening the dual code based on linear OOA(2216, 1365, F2, 3, 36) (dual of [(1365, 3), 3879, 37]-NRT-code), using
(180, 180+36, 30911)-Net in Base 2 — Upper bound on s
There is no (180, 216, 30912)-net in base 2, because
- the generalized Rao bound for nets shows that 2m ≥ 105352 038017 248692 205640 998139 341016 337841 078312 755520 208231 904925 > 2216 [i]