Best Known (39, 49, s)-Nets in Base 81
(39, 49, 1690681)-Net over F81 — Constructive and digital
Digital (39, 49, 1690681)-net over F81, using
- (u, u+v)-construction [i] based on
- digital (7, 12, 12961)-net over F81, using
- net defined by OOA [i] based on linear OOA(8112, 12961, F81, 5, 5) (dual of [(12961, 5), 64793, 6]-NRT-code), using
- appending kth column [i] based on linear OOA(8112, 12961, F81, 4, 5) (dual of [(12961, 4), 51832, 6]-NRT-code), using
- OOA 2-folding and stacking with additional row [i] based on linear OA(8112, 25923, F81, 5) (dual of [25923, 25911, 6]-code), using
- discarding factors / shortening the dual code based on linear OA(8112, 25924, F81, 5) (dual of [25924, 25912, 6]-code), using
- generalized (u, u+v)-construction [i] based on
- linear OA(811, 6481, F81, 1) (dual of [6481, 6480, 2]-code), using
- discarding factors / shortening the dual code based on linear OA(811, s, F81, 1) (dual of [s, s−1, 2]-code) with arbitrarily large s, using
- linear OA(811, 6481, F81, 1) (dual of [6481, 6480, 2]-code) (see above)
- linear OA(813, 6481, F81, 2) (dual of [6481, 6478, 3]-code), using
- discarding factors / shortening the dual code based on linear OA(813, 6643, F81, 2) (dual of [6643, 6640, 3]-code), using
- Hamming code H(3,81) [i]
- discarding factors / shortening the dual code based on linear OA(813, 6643, F81, 2) (dual of [6643, 6640, 3]-code), using
- linear OA(817, 6481, F81, 5) (dual of [6481, 6474, 6]-code), using
- linear OA(811, 6481, F81, 1) (dual of [6481, 6480, 2]-code), using
- generalized (u, u+v)-construction [i] based on
- discarding factors / shortening the dual code based on linear OA(8112, 25924, F81, 5) (dual of [25924, 25912, 6]-code), using
- OOA 2-folding and stacking with additional row [i] based on linear OA(8112, 25923, F81, 5) (dual of [25923, 25911, 6]-code), using
- appending kth column [i] based on linear OOA(8112, 12961, F81, 4, 5) (dual of [(12961, 4), 51832, 6]-NRT-code), using
- net defined by OOA [i] based on linear OOA(8112, 12961, F81, 5, 5) (dual of [(12961, 5), 64793, 6]-NRT-code), using
- digital (27, 37, 1677720)-net over F81, using
- net defined by OOA [i] based on linear OOA(8137, 1677720, F81, 10, 10) (dual of [(1677720, 10), 16777163, 11]-NRT-code), using
- OA 5-folding and stacking [i] based on linear OA(8137, 8388600, F81, 10) (dual of [8388600, 8388563, 11]-code), using
- discarding factors / shortening the dual code based on linear OA(8137, large, F81, 10) (dual of [large, large−37, 11]-code), using
- the expurgated narrow-sense BCH-code C(I) with length 21523360 | 814−1, defining interval I = [0,9], and designed minimum distance d ≥ |I|+1 = 11 [i]
- discarding factors / shortening the dual code based on linear OA(8137, large, F81, 10) (dual of [large, large−37, 11]-code), using
- OA 5-folding and stacking [i] based on linear OA(8137, 8388600, F81, 10) (dual of [8388600, 8388563, 11]-code), using
- net defined by OOA [i] based on linear OOA(8137, 1677720, F81, 10, 10) (dual of [(1677720, 10), 16777163, 11]-NRT-code), using
- digital (7, 12, 12961)-net over F81, using
(39, 49, large)-Net over F81 — Digital
Digital (39, 49, large)-net over F81, using
- 4 times m-reduction [i] based on digital (39, 53, large)-net over F81, using
- embedding of OOA with Gilbert–VarÅ¡amov bound [i] based on linear OA(8153, large, F81, 14) (dual of [large, large−53, 15]-code), using
- the expurgated narrow-sense BCH-code C(I) with length 21523360 | 814−1, defining interval I = [0,13], and designed minimum distance d ≥ |I|+1 = 15 [i]
- embedding of OOA with Gilbert–VarÅ¡amov bound [i] based on linear OA(8153, large, F81, 14) (dual of [large, large−53, 15]-code), using
(39, 49, large)-Net in Base 81 — Upper bound on s
There is no (39, 49, large)-net in base 81, because
- 8 times m-reduction [i] would yield (39, 41, large)-net in base 81, but