Best Known (178−22, 178, s)-Nets in Base 4
(178−22, 178, 381301)-Net over F4 — Constructive and digital
Digital (156, 178, 381301)-net over F4, using
- 41 times duplication [i] based on digital (155, 177, 381301)-net over F4, using
- net defined by OOA [i] based on linear OOA(4177, 381301, F4, 22, 22) (dual of [(381301, 22), 8388445, 23]-NRT-code), using
- OA 11-folding and stacking [i] based on linear OA(4177, 4194311, F4, 22) (dual of [4194311, 4194134, 23]-code), using
- discarding factors / shortening the dual code based on linear OA(4177, 4194315, F4, 22) (dual of [4194315, 4194138, 23]-code), using
- construction X applied to Ce(21) ⊂ Ce(20) [i] based on
- linear OA(4177, 4194304, F4, 22) (dual of [4194304, 4194127, 23]-code), using an extension Ce(21) of the primitive narrow-sense BCH-code C(I) with length 4194303 = 411−1, defining interval I = [1,21], and designed minimum distance d ≥ |I|+1 = 22 [i]
- linear OA(4166, 4194304, F4, 21) (dual of [4194304, 4194138, 22]-code), using an extension Ce(20) of the primitive narrow-sense BCH-code C(I) with length 4194303 = 411−1, defining interval I = [1,20], and designed minimum distance d ≥ |I|+1 = 21 [i]
- linear OA(40, 11, F4, 0) (dual of [11, 11, 1]-code), using
- discarding factors / shortening the dual code based on linear OA(40, s, F4, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
- construction X applied to Ce(21) ⊂ Ce(20) [i] based on
- discarding factors / shortening the dual code based on linear OA(4177, 4194315, F4, 22) (dual of [4194315, 4194138, 23]-code), using
- OA 11-folding and stacking [i] based on linear OA(4177, 4194311, F4, 22) (dual of [4194311, 4194134, 23]-code), using
- net defined by OOA [i] based on linear OOA(4177, 381301, F4, 22, 22) (dual of [(381301, 22), 8388445, 23]-NRT-code), using
(178−22, 178, 1398105)-Net over F4 — Digital
Digital (156, 178, 1398105)-net over F4, using
- 41 times duplication [i] based on digital (155, 177, 1398105)-net over F4, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(4177, 1398105, F4, 3, 22) (dual of [(1398105, 3), 4194138, 23]-NRT-code), using
- OOA 3-folding [i] based on linear OA(4177, 4194315, F4, 22) (dual of [4194315, 4194138, 23]-code), using
- construction X applied to Ce(21) ⊂ Ce(20) [i] based on
- linear OA(4177, 4194304, F4, 22) (dual of [4194304, 4194127, 23]-code), using an extension Ce(21) of the primitive narrow-sense BCH-code C(I) with length 4194303 = 411−1, defining interval I = [1,21], and designed minimum distance d ≥ |I|+1 = 22 [i]
- linear OA(4166, 4194304, F4, 21) (dual of [4194304, 4194138, 22]-code), using an extension Ce(20) of the primitive narrow-sense BCH-code C(I) with length 4194303 = 411−1, defining interval I = [1,20], and designed minimum distance d ≥ |I|+1 = 21 [i]
- linear OA(40, 11, F4, 0) (dual of [11, 11, 1]-code), using
- discarding factors / shortening the dual code based on linear OA(40, s, F4, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
- construction X applied to Ce(21) ⊂ Ce(20) [i] based on
- OOA 3-folding [i] based on linear OA(4177, 4194315, F4, 22) (dual of [4194315, 4194138, 23]-code), using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(4177, 1398105, F4, 3, 22) (dual of [(1398105, 3), 4194138, 23]-NRT-code), using
(178−22, 178, large)-Net in Base 4 — Upper bound on s
There is no (156, 178, large)-net in base 4, because
- 20 times m-reduction [i] would yield (156, 158, large)-net in base 4, but