Best Known (67, 81, s)-Nets in Base 9
(67, 81, 151841)-Net over F9 — Constructive and digital
Digital (67, 81, 151841)-net over F9, using
- 91 times duplication [i] based on digital (66, 80, 151841)-net over F9, using
- net defined by OOA [i] based on linear OOA(980, 151841, F9, 14, 14) (dual of [(151841, 14), 2125694, 15]-NRT-code), using
- OA 7-folding and stacking [i] based on linear OA(980, 1062887, F9, 14) (dual of [1062887, 1062807, 15]-code), using
- discarding factors / shortening the dual code based on linear OA(980, 1062888, F9, 14) (dual of [1062888, 1062808, 15]-code), using
- trace code [i] based on linear OA(8140, 531444, F81, 14) (dual of [531444, 531404, 15]-code), using
- construction X applied to Ce(13) ⊂ Ce(12) [i] based on
- linear OA(8140, 531441, F81, 14) (dual of [531441, 531401, 15]-code), using an extension Ce(13) of the primitive narrow-sense BCH-code C(I) with length 531440 = 813−1, defining interval I = [1,13], and designed minimum distance d ≥ |I|+1 = 14 [i]
- linear OA(8137, 531441, F81, 13) (dual of [531441, 531404, 14]-code), using an extension Ce(12) of the primitive narrow-sense BCH-code C(I) with length 531440 = 813−1, defining interval I = [1,12], and designed minimum distance d ≥ |I|+1 = 13 [i]
- linear OA(810, 3, F81, 0) (dual of [3, 3, 1]-code), using
- discarding factors / shortening the dual code based on linear OA(810, s, F81, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
- construction X applied to Ce(13) ⊂ Ce(12) [i] based on
- trace code [i] based on linear OA(8140, 531444, F81, 14) (dual of [531444, 531404, 15]-code), using
- discarding factors / shortening the dual code based on linear OA(980, 1062888, F9, 14) (dual of [1062888, 1062808, 15]-code), using
- OA 7-folding and stacking [i] based on linear OA(980, 1062887, F9, 14) (dual of [1062887, 1062807, 15]-code), using
- net defined by OOA [i] based on linear OOA(980, 151841, F9, 14, 14) (dual of [(151841, 14), 2125694, 15]-NRT-code), using
(67, 81, 1062890)-Net over F9 — Digital
Digital (67, 81, 1062890)-net over F9, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(981, 1062890, F9, 14) (dual of [1062890, 1062809, 15]-code), using
- construction X with Varšamov bound [i] based on
- linear OA(980, 1062888, F9, 14) (dual of [1062888, 1062808, 15]-code), using
- trace code [i] based on linear OA(8140, 531444, F81, 14) (dual of [531444, 531404, 15]-code), using
- construction X applied to Ce(13) ⊂ Ce(12) [i] based on
- linear OA(8140, 531441, F81, 14) (dual of [531441, 531401, 15]-code), using an extension Ce(13) of the primitive narrow-sense BCH-code C(I) with length 531440 = 813−1, defining interval I = [1,13], and designed minimum distance d ≥ |I|+1 = 14 [i]
- linear OA(8137, 531441, F81, 13) (dual of [531441, 531404, 14]-code), using an extension Ce(12) of the primitive narrow-sense BCH-code C(I) with length 531440 = 813−1, defining interval I = [1,12], and designed minimum distance d ≥ |I|+1 = 13 [i]
- linear OA(810, 3, F81, 0) (dual of [3, 3, 1]-code), using
- discarding factors / shortening the dual code based on linear OA(810, s, F81, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
- construction X applied to Ce(13) ⊂ Ce(12) [i] based on
- trace code [i] based on linear OA(8140, 531444, F81, 14) (dual of [531444, 531404, 15]-code), using
- linear OA(980, 1062889, F9, 13) (dual of [1062889, 1062809, 14]-code), using Gilbert–Varšamov bound and bm = 980 > Vbs−1(k−1) = 298 240467 814920 615504 972458 445304 659306 778106 921731 579407 574850 312241 650241 [i]
- linear OA(90, 1, F9, 0) (dual of [1, 1, 1]-code), using
- discarding factors / shortening the dual code based on linear OA(90, s, F9, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
- linear OA(980, 1062888, F9, 14) (dual of [1062888, 1062808, 15]-code), using
- construction X with Varšamov bound [i] based on
(67, 81, large)-Net in Base 9 — Upper bound on s
There is no (67, 81, large)-net in base 9, because
- 12 times m-reduction [i] would yield (67, 69, large)-net in base 9, but