Best Known (16−8, 16, s)-Nets in Base 81
(16−8, 16, 1641)-Net over F81 — Constructive and digital
Digital (8, 16, 1641)-net over F81, using
- net defined by OOA [i] based on linear OOA(8116, 1641, F81, 8, 8) (dual of [(1641, 8), 13112, 9]-NRT-code), using
- OA 4-folding and stacking [i] based on linear OA(8116, 6564, F81, 8) (dual of [6564, 6548, 9]-code), using
- discarding factors / shortening the dual code based on linear OA(8116, 6566, F81, 8) (dual of [6566, 6550, 9]-code), using
- construction X applied to Ce(7) ⊂ Ce(5) [i] based on
- linear OA(8115, 6561, F81, 8) (dual of [6561, 6546, 9]-code), using an extension Ce(7) of the primitive narrow-sense BCH-code C(I) with length 6560 = 812−1, defining interval I = [1,7], and designed minimum distance d ≥ |I|+1 = 8 [i]
- linear OA(8111, 6561, F81, 6) (dual of [6561, 6550, 7]-code), using an extension Ce(5) of the primitive narrow-sense BCH-code C(I) with length 6560 = 812−1, defining interval I = [1,5], and designed minimum distance d ≥ |I|+1 = 6 [i]
- linear OA(811, 5, F81, 1) (dual of [5, 4, 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
- construction X applied to Ce(7) ⊂ Ce(5) [i] based on
- discarding factors / shortening the dual code based on linear OA(8116, 6566, F81, 8) (dual of [6566, 6550, 9]-code), using
- OA 4-folding and stacking [i] based on linear OA(8116, 6564, F81, 8) (dual of [6564, 6548, 9]-code), using
(16−8, 16, 3283)-Net over F81 — Digital
Digital (8, 16, 3283)-net over F81, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(8116, 3283, F81, 2, 8) (dual of [(3283, 2), 6550, 9]-NRT-code), using
- OOA 2-folding [i] based on linear OA(8116, 6566, F81, 8) (dual of [6566, 6550, 9]-code), using
- construction X applied to Ce(7) ⊂ Ce(5) [i] based on
- linear OA(8115, 6561, F81, 8) (dual of [6561, 6546, 9]-code), using an extension Ce(7) of the primitive narrow-sense BCH-code C(I) with length 6560 = 812−1, defining interval I = [1,7], and designed minimum distance d ≥ |I|+1 = 8 [i]
- linear OA(8111, 6561, F81, 6) (dual of [6561, 6550, 7]-code), using an extension Ce(5) of the primitive narrow-sense BCH-code C(I) with length 6560 = 812−1, defining interval I = [1,5], and designed minimum distance d ≥ |I|+1 = 6 [i]
- linear OA(811, 5, F81, 1) (dual of [5, 4, 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
- construction X applied to Ce(7) ⊂ Ce(5) [i] based on
- OOA 2-folding [i] based on linear OA(8116, 6566, F81, 8) (dual of [6566, 6550, 9]-code), using
(16−8, 16, 1190974)-Net in Base 81 — Upper bound on s
There is no (8, 16, 1190975)-net in base 81, because
- the generalized Rao bound for nets shows that 81m ≥ 3 433693 670907 595685 330229 432001 > 8116 [i]