Best Known (21, 26, s)-Nets in Base 8
(21, 26, 262146)-Net over F8 — Constructive and digital
Digital (21, 26, 262146)-net over F8, using
- net defined by OOA [i] based on linear OOA(826, 262146, F8, 5, 5) (dual of [(262146, 5), 1310704, 6]-NRT-code), using
- OOA 2-folding and stacking with additional row [i] based on linear OA(826, 524293, F8, 5) (dual of [524293, 524267, 6]-code), using
- discarding factors / shortening the dual code based on linear OA(826, 524294, F8, 5) (dual of [524294, 524268, 6]-code), using
- trace code [i] based on linear OA(6413, 262147, F64, 5) (dual of [262147, 262134, 6]-code), using
- construction X applied to Ce(4) ⊂ Ce(3) [i] based on
- linear OA(6413, 262144, F64, 5) (dual of [262144, 262131, 6]-code), using an extension Ce(4) of the primitive narrow-sense BCH-code C(I) with length 262143 = 643−1, defining interval I = [1,4], and designed minimum distance d ≥ |I|+1 = 5 [i]
- linear OA(6410, 262144, F64, 4) (dual of [262144, 262134, 5]-code), using an extension Ce(3) of the primitive narrow-sense BCH-code C(I) with length 262143 = 643−1, defining interval I = [1,3], and designed minimum distance d ≥ |I|+1 = 4 [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(4) ⊂ Ce(3) [i] based on
- trace code [i] based on linear OA(6413, 262147, F64, 5) (dual of [262147, 262134, 6]-code), using
- discarding factors / shortening the dual code based on linear OA(826, 524294, F8, 5) (dual of [524294, 524268, 6]-code), using
- OOA 2-folding and stacking with additional row [i] based on linear OA(826, 524293, F8, 5) (dual of [524293, 524267, 6]-code), using
(21, 26, 524294)-Net over F8 — Digital
Digital (21, 26, 524294)-net over F8, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(826, 524294, F8, 5) (dual of [524294, 524268, 6]-code), using
- trace code [i] based on linear OA(6413, 262147, F64, 5) (dual of [262147, 262134, 6]-code), using
- construction X applied to Ce(4) ⊂ Ce(3) [i] based on
- linear OA(6413, 262144, F64, 5) (dual of [262144, 262131, 6]-code), using an extension Ce(4) of the primitive narrow-sense BCH-code C(I) with length 262143 = 643−1, defining interval I = [1,4], and designed minimum distance d ≥ |I|+1 = 5 [i]
- linear OA(6410, 262144, F64, 4) (dual of [262144, 262134, 5]-code), using an extension Ce(3) of the primitive narrow-sense BCH-code C(I) with length 262143 = 643−1, defining interval I = [1,3], and designed minimum distance d ≥ |I|+1 = 4 [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(4) ⊂ Ce(3) [i] based on
- trace code [i] based on linear OA(6413, 262147, F64, 5) (dual of [262147, 262134, 6]-code), using
(21, 26, large)-Net in Base 8 — Upper bound on s
There is no (21, 26, large)-net in base 8, because
- 3 times m-reduction [i] would yield (21, 23, large)-net in base 8, but