Best Known (49−17, 49, s)-Nets in Base 27
(49−17, 49, 2460)-Net over F27 — Constructive and digital
Digital (32, 49, 2460)-net over F27, using
- net defined by OOA [i] based on linear OOA(2749, 2460, F27, 17, 17) (dual of [(2460, 17), 41771, 18]-NRT-code), using
- OOA 8-folding and stacking with additional row [i] based on linear OA(2749, 19681, F27, 17) (dual of [19681, 19632, 18]-code), using
- discarding factors / shortening the dual code based on linear OA(2749, 19683, F27, 17) (dual of [19683, 19634, 18]-code), using
- an extension Ce(16) of the primitive narrow-sense BCH-code C(I) with length 19682 = 273−1, defining interval I = [1,16], and designed minimum distance d ≥ |I|+1 = 17 [i]
- discarding factors / shortening the dual code based on linear OA(2749, 19683, F27, 17) (dual of [19683, 19634, 18]-code), using
- OOA 8-folding and stacking with additional row [i] based on linear OA(2749, 19681, F27, 17) (dual of [19681, 19632, 18]-code), using
(49−17, 49, 9843)-Net over F27 — Digital
Digital (32, 49, 9843)-net over F27, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(2749, 9843, F27, 2, 17) (dual of [(9843, 2), 19637, 18]-NRT-code), using
- OOA 2-folding [i] based on linear OA(2749, 19686, F27, 17) (dual of [19686, 19637, 18]-code), using
- construction X applied to Ce(16) ⊂ Ce(15) [i] based on
- linear OA(2749, 19683, F27, 17) (dual of [19683, 19634, 18]-code), using an extension Ce(16) of the primitive narrow-sense BCH-code C(I) with length 19682 = 273−1, defining interval I = [1,16], and designed minimum distance d ≥ |I|+1 = 17 [i]
- linear OA(2746, 19683, F27, 16) (dual of [19683, 19637, 17]-code), using an extension Ce(15) of the primitive narrow-sense BCH-code C(I) with length 19682 = 273−1, defining interval I = [1,15], and designed minimum distance d ≥ |I|+1 = 16 [i]
- linear OA(270, 3, F27, 0) (dual of [3, 3, 1]-code), using
- discarding factors / shortening the dual code based on linear OA(270, s, F27, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
- construction X applied to Ce(16) ⊂ Ce(15) [i] based on
- OOA 2-folding [i] based on linear OA(2749, 19686, F27, 17) (dual of [19686, 19637, 18]-code), using
(49−17, 49, large)-Net in Base 27 — Upper bound on s
There is no (32, 49, large)-net in base 27, because
- 15 times m-reduction [i] would yield (32, 34, large)-net in base 27, but