Best Known (87−20, 87, s)-Nets in Base 8
(87−20, 87, 3277)-Net over F8 — Constructive and digital
Digital (67, 87, 3277)-net over F8, using
- 81 times duplication [i] based on digital (66, 86, 3277)-net over F8, using
- net defined by OOA [i] based on linear OOA(886, 3277, F8, 20, 20) (dual of [(3277, 20), 65454, 21]-NRT-code), using
- OA 10-folding and stacking [i] based on linear OA(886, 32770, F8, 20) (dual of [32770, 32684, 21]-code), using
- discarding factors / shortening the dual code based on linear OA(886, 32773, F8, 20) (dual of [32773, 32687, 21]-code), using
- construction X applied to Ce(19) ⊂ Ce(18) [i] based on
- linear OA(886, 32768, F8, 20) (dual of [32768, 32682, 21]-code), using an extension Ce(19) of the primitive narrow-sense BCH-code C(I) with length 32767 = 85−1, defining interval I = [1,19], and designed minimum distance d ≥ |I|+1 = 20 [i]
- linear OA(881, 32768, F8, 19) (dual of [32768, 32687, 20]-code), using an extension Ce(18) of the primitive narrow-sense BCH-code C(I) with length 32767 = 85−1, defining interval I = [1,18], and designed minimum distance d ≥ |I|+1 = 19 [i]
- linear OA(80, 5, F8, 0) (dual of [5, 5, 1]-code), using
- discarding factors / shortening the dual code based on linear OA(80, s, F8, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
- construction X applied to Ce(19) ⊂ Ce(18) [i] based on
- discarding factors / shortening the dual code based on linear OA(886, 32773, F8, 20) (dual of [32773, 32687, 21]-code), using
- OA 10-folding and stacking [i] based on linear OA(886, 32770, F8, 20) (dual of [32770, 32684, 21]-code), using
- net defined by OOA [i] based on linear OOA(886, 3277, F8, 20, 20) (dual of [(3277, 20), 65454, 21]-NRT-code), using
(87−20, 87, 22263)-Net over F8 — Digital
Digital (67, 87, 22263)-net over F8, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(887, 22263, F8, 20) (dual of [22263, 22176, 21]-code), using
- discarding factors / shortening the dual code based on linear OA(887, 32779, F8, 20) (dual of [32779, 32692, 21]-code), using
- construction X applied to Ce(19) ⊂ Ce(17) [i] based on
- linear OA(886, 32768, F8, 20) (dual of [32768, 32682, 21]-code), using an extension Ce(19) of the primitive narrow-sense BCH-code C(I) with length 32767 = 85−1, defining interval I = [1,19], and designed minimum distance d ≥ |I|+1 = 20 [i]
- linear OA(876, 32768, F8, 18) (dual of [32768, 32692, 19]-code), using an extension Ce(17) of the primitive narrow-sense BCH-code C(I) with length 32767 = 85−1, defining interval I = [1,17], and designed minimum distance d ≥ |I|+1 = 18 [i]
- linear OA(81, 11, F8, 1) (dual of [11, 10, 2]-code), using
- discarding factors / shortening the dual code based on linear OA(81, s, F8, 1) (dual of [s, s−1, 2]-code) with arbitrarily large s, using
- construction X applied to Ce(19) ⊂ Ce(17) [i] based on
- discarding factors / shortening the dual code based on linear OA(887, 32779, F8, 20) (dual of [32779, 32692, 21]-code), using
(87−20, 87, large)-Net in Base 8 — Upper bound on s
There is no (67, 87, large)-net in base 8, because
- 18 times m-reduction [i] would yield (67, 69, large)-net in base 8, but