Best Known (157, 185, s)-Nets in Base 4
(157, 185, 4695)-Net over F4 — Constructive and digital
Digital (157, 185, 4695)-net over F4, using
- (u, u+v)-construction [i] based on
- digital (3, 17, 14)-net over F4, using
- net from sequence [i] based on digital (3, 13)-sequence over F4, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F4 with g(F) = 3 and N(F) ≥ 14, using
- net from sequence [i] based on digital (3, 13)-sequence over F4, using
- digital (140, 168, 4681)-net over F4, using
- net defined by OOA [i] based on linear OOA(4168, 4681, F4, 28, 28) (dual of [(4681, 28), 130900, 29]-NRT-code), using
- OA 14-folding and stacking [i] based on linear OA(4168, 65534, F4, 28) (dual of [65534, 65366, 29]-code), using
- discarding factors / shortening the dual code based on linear OA(4168, 65535, F4, 28) (dual of [65535, 65367, 29]-code), using
- 1 times truncation [i] based on linear OA(4169, 65536, F4, 29) (dual of [65536, 65367, 30]-code), using
- an extension Ce(28) of the primitive narrow-sense BCH-code C(I) with length 65535 = 48−1, defining interval I = [1,28], and designed minimum distance d ≥ |I|+1 = 29 [i]
- 1 times truncation [i] based on linear OA(4169, 65536, F4, 29) (dual of [65536, 65367, 30]-code), using
- discarding factors / shortening the dual code based on linear OA(4168, 65535, F4, 28) (dual of [65535, 65367, 29]-code), using
- OA 14-folding and stacking [i] based on linear OA(4168, 65534, F4, 28) (dual of [65534, 65366, 29]-code), using
- net defined by OOA [i] based on linear OOA(4168, 4681, F4, 28, 28) (dual of [(4681, 28), 130900, 29]-NRT-code), using
- digital (3, 17, 14)-net over F4, using
(157, 185, 64086)-Net over F4 — Digital
Digital (157, 185, 64086)-net over F4, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(4185, 64086, F4, 28) (dual of [64086, 63901, 29]-code), using
- discarding factors / shortening the dual code based on linear OA(4185, 65600, F4, 28) (dual of [65600, 65415, 29]-code), using
- strength reduction [i] based on linear OA(4185, 65600, F4, 29) (dual of [65600, 65415, 30]-code), using
- construction X applied to Ce(28) ⊂ Ce(20) [i] based on
- linear OA(4169, 65536, F4, 29) (dual of [65536, 65367, 30]-code), using an extension Ce(28) of the primitive narrow-sense BCH-code C(I) with length 65535 = 48−1, defining interval I = [1,28], and designed minimum distance d ≥ |I|+1 = 29 [i]
- linear OA(4121, 65536, F4, 21) (dual of [65536, 65415, 22]-code), using an extension Ce(20) of the primitive narrow-sense BCH-code C(I) with length 65535 = 48−1, defining interval I = [1,20], and designed minimum distance d ≥ |I|+1 = 21 [i]
- linear OA(416, 64, F4, 7) (dual of [64, 48, 8]-code), using
- an extension Ce(6) of the primitive narrow-sense BCH-code C(I) with length 63 = 43−1, defining interval I = [1,6], and designed minimum distance d ≥ |I|+1 = 7 [i]
- construction X applied to Ce(28) ⊂ Ce(20) [i] based on
- strength reduction [i] based on linear OA(4185, 65600, F4, 29) (dual of [65600, 65415, 30]-code), using
- discarding factors / shortening the dual code based on linear OA(4185, 65600, F4, 28) (dual of [65600, 65415, 29]-code), using
(157, 185, large)-Net in Base 4 — Upper bound on s
There is no (157, 185, large)-net in base 4, because
- 26 times m-reduction [i] would yield (157, 159, large)-net in base 4, but