Best Known (67−23, 67, s)-Nets in Base 64
(67−23, 67, 23831)-Net over F64 — Constructive and digital
Digital (44, 67, 23831)-net over F64, using
- net defined by OOA [i] based on linear OOA(6467, 23831, F64, 23, 23) (dual of [(23831, 23), 548046, 24]-NRT-code), using
- OOA 11-folding and stacking with additional row [i] based on linear OA(6467, 262142, F64, 23) (dual of [262142, 262075, 24]-code), using
- discarding factors / shortening the dual code based on linear OA(6467, 262144, F64, 23) (dual of [262144, 262077, 24]-code), using
- an extension Ce(22) of the primitive narrow-sense BCH-code C(I) with length 262143 = 643−1, defining interval I = [1,22], and designed minimum distance d ≥ |I|+1 = 23 [i]
- discarding factors / shortening the dual code based on linear OA(6467, 262144, F64, 23) (dual of [262144, 262077, 24]-code), using
- OOA 11-folding and stacking with additional row [i] based on linear OA(6467, 262142, F64, 23) (dual of [262142, 262075, 24]-code), using
(67−23, 67, 97726)-Net over F64 — Digital
Digital (44, 67, 97726)-net over F64, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(6467, 97726, F64, 2, 23) (dual of [(97726, 2), 195385, 24]-NRT-code), using
- discarding factors / shortening the dual code based on linear OOA(6467, 131073, F64, 2, 23) (dual of [(131073, 2), 262079, 24]-NRT-code), using
- OOA 2-folding [i] based on linear OA(6467, 262146, F64, 23) (dual of [262146, 262079, 24]-code), using
- discarding factors / shortening the dual code based on linear OA(6467, 262147, F64, 23) (dual of [262147, 262080, 24]-code), using
- construction X applied to Ce(22) ⊂ Ce(21) [i] based on
- linear OA(6467, 262144, F64, 23) (dual of [262144, 262077, 24]-code), using an extension Ce(22) of the primitive narrow-sense BCH-code C(I) with length 262143 = 643−1, defining interval I = [1,22], and designed minimum distance d ≥ |I|+1 = 23 [i]
- linear OA(6464, 262144, F64, 22) (dual of [262144, 262080, 23]-code), using an extension Ce(21) of the primitive narrow-sense BCH-code C(I) with length 262143 = 643−1, defining interval I = [1,21], and designed minimum distance d ≥ |I|+1 = 22 [i]
- linear OA(640, 3, F64, 0) (dual of [3, 3, 1]-code), using
- discarding factors / shortening the dual code based on linear OA(640, s, F64, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
- construction X applied to Ce(22) ⊂ Ce(21) [i] based on
- discarding factors / shortening the dual code based on linear OA(6467, 262147, F64, 23) (dual of [262147, 262080, 24]-code), using
- OOA 2-folding [i] based on linear OA(6467, 262146, F64, 23) (dual of [262146, 262079, 24]-code), using
- discarding factors / shortening the dual code based on linear OOA(6467, 131073, F64, 2, 23) (dual of [(131073, 2), 262079, 24]-NRT-code), using
(67−23, 67, large)-Net in Base 64 — Upper bound on s
There is no (44, 67, large)-net in base 64, because
- 21 times m-reduction [i] would yield (44, 46, large)-net in base 64, but