Best Known (173, 173+28, s)-Nets in Base 4
(173, 173+28, 18728)-Net over F4 — Constructive and digital
Digital (173, 201, 18728)-net over F4, using
- 41 times duplication [i] based on digital (172, 200, 18728)-net over F4, using
- net defined by OOA [i] based on linear OOA(4200, 18728, F4, 28, 28) (dual of [(18728, 28), 524184, 29]-NRT-code), using
- OA 14-folding and stacking [i] based on linear OA(4200, 262192, F4, 28) (dual of [262192, 261992, 29]-code), using
- discarding factors / shortening the dual code based on linear OA(4200, 262199, F4, 28) (dual of [262199, 261999, 29]-code), using
- construction X applied to Ce(28) ⊂ Ce(21) [i] based on
- linear OA(4190, 262144, F4, 29) (dual of [262144, 261954, 30]-code), using an extension Ce(28) of the primitive narrow-sense BCH-code C(I) with length 262143 = 49−1, defining interval I = [1,28], and designed minimum distance d ≥ |I|+1 = 29 [i]
- linear OA(4145, 262144, F4, 22) (dual of [262144, 261999, 23]-code), using an extension Ce(21) of the primitive narrow-sense BCH-code C(I) with length 262143 = 49−1, defining interval I = [1,21], and designed minimum distance d ≥ |I|+1 = 22 [i]
- linear OA(410, 55, F4, 5) (dual of [55, 45, 6]-code), using
- discarding factors / shortening the dual code based on linear OA(410, 63, F4, 5) (dual of [63, 53, 6]-code), using
- the primitive expurgated narrow-sense BCH-code C(I) with length 63 = 43−1, defining interval I = [0,3], and designed minimum distance d ≥ |I|+1 = 6 [i]
- discarding factors / shortening the dual code based on linear OA(410, 63, F4, 5) (dual of [63, 53, 6]-code), using
- construction X applied to Ce(28) ⊂ Ce(21) [i] based on
- discarding factors / shortening the dual code based on linear OA(4200, 262199, F4, 28) (dual of [262199, 261999, 29]-code), using
- OA 14-folding and stacking [i] based on linear OA(4200, 262192, F4, 28) (dual of [262192, 261992, 29]-code), using
- net defined by OOA [i] based on linear OOA(4200, 18728, F4, 28, 28) (dual of [(18728, 28), 524184, 29]-NRT-code), using
(173, 173+28, 150433)-Net over F4 — Digital
Digital (173, 201, 150433)-net over F4, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(4201, 150433, F4, 28) (dual of [150433, 150232, 29]-code), using
- discarding factors / shortening the dual code based on linear OA(4201, 262200, F4, 28) (dual of [262200, 261999, 29]-code), using
- 1 times code embedding in larger space [i] based on linear OA(4200, 262199, F4, 28) (dual of [262199, 261999, 29]-code), using
- construction X applied to Ce(28) ⊂ Ce(21) [i] based on
- linear OA(4190, 262144, F4, 29) (dual of [262144, 261954, 30]-code), using an extension Ce(28) of the primitive narrow-sense BCH-code C(I) with length 262143 = 49−1, defining interval I = [1,28], and designed minimum distance d ≥ |I|+1 = 29 [i]
- linear OA(4145, 262144, F4, 22) (dual of [262144, 261999, 23]-code), using an extension Ce(21) of the primitive narrow-sense BCH-code C(I) with length 262143 = 49−1, defining interval I = [1,21], and designed minimum distance d ≥ |I|+1 = 22 [i]
- linear OA(410, 55, F4, 5) (dual of [55, 45, 6]-code), using
- discarding factors / shortening the dual code based on linear OA(410, 63, F4, 5) (dual of [63, 53, 6]-code), using
- the primitive expurgated narrow-sense BCH-code C(I) with length 63 = 43−1, defining interval I = [0,3], and designed minimum distance d ≥ |I|+1 = 6 [i]
- discarding factors / shortening the dual code based on linear OA(410, 63, F4, 5) (dual of [63, 53, 6]-code), using
- construction X applied to Ce(28) ⊂ Ce(21) [i] based on
- 1 times code embedding in larger space [i] based on linear OA(4200, 262199, F4, 28) (dual of [262199, 261999, 29]-code), using
- discarding factors / shortening the dual code based on linear OA(4201, 262200, F4, 28) (dual of [262200, 261999, 29]-code), using
(173, 173+28, large)-Net in Base 4 — Upper bound on s
There is no (173, 201, large)-net in base 4, because
- 26 times m-reduction [i] would yield (173, 175, large)-net in base 4, but