Best Known (245−30, 245, s)-Nets in Base 4
(245−30, 245, 279621)-Net over F4 — Constructive and digital
Digital (215, 245, 279621)-net over F4, using
- 42 times duplication [i] based on digital (213, 243, 279621)-net over F4, using
- net defined by OOA [i] based on linear OOA(4243, 279621, F4, 30, 30) (dual of [(279621, 30), 8388387, 31]-NRT-code), using
- OA 15-folding and stacking [i] based on linear OA(4243, 4194315, F4, 30) (dual of [4194315, 4194072, 31]-code), using
- construction X applied to Ce(29) ⊂ Ce(28) [i] based on
- linear OA(4243, 4194304, F4, 30) (dual of [4194304, 4194061, 31]-code), using an extension Ce(29) of the primitive narrow-sense BCH-code C(I) with length 4194303 = 411−1, defining interval I = [1,29], and designed minimum distance d ≥ |I|+1 = 30 [i]
- linear OA(4232, 4194304, F4, 29) (dual of [4194304, 4194072, 30]-code), using an extension Ce(28) of the primitive narrow-sense BCH-code C(I) with length 4194303 = 411−1, defining interval I = [1,28], and designed minimum distance d ≥ |I|+1 = 29 [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(29) ⊂ Ce(28) [i] based on
- OA 15-folding and stacking [i] based on linear OA(4243, 4194315, F4, 30) (dual of [4194315, 4194072, 31]-code), using
- net defined by OOA [i] based on linear OOA(4243, 279621, F4, 30, 30) (dual of [(279621, 30), 8388387, 31]-NRT-code), using
(245−30, 245, 1398105)-Net over F4 — Digital
Digital (215, 245, 1398105)-net over F4, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(4245, 1398105, F4, 3, 30) (dual of [(1398105, 3), 4194070, 31]-NRT-code), using
- 42 times duplication [i] based on linear OOA(4243, 1398105, F4, 3, 30) (dual of [(1398105, 3), 4194072, 31]-NRT-code), using
- OOA 3-folding [i] based on linear OA(4243, 4194315, F4, 30) (dual of [4194315, 4194072, 31]-code), using
- construction X applied to Ce(29) ⊂ Ce(28) [i] based on
- linear OA(4243, 4194304, F4, 30) (dual of [4194304, 4194061, 31]-code), using an extension Ce(29) of the primitive narrow-sense BCH-code C(I) with length 4194303 = 411−1, defining interval I = [1,29], and designed minimum distance d ≥ |I|+1 = 30 [i]
- linear OA(4232, 4194304, F4, 29) (dual of [4194304, 4194072, 30]-code), using an extension Ce(28) of the primitive narrow-sense BCH-code C(I) with length 4194303 = 411−1, defining interval I = [1,28], and designed minimum distance d ≥ |I|+1 = 29 [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(29) ⊂ Ce(28) [i] based on
- OOA 3-folding [i] based on linear OA(4243, 4194315, F4, 30) (dual of [4194315, 4194072, 31]-code), using
- 42 times duplication [i] based on linear OOA(4243, 1398105, F4, 3, 30) (dual of [(1398105, 3), 4194072, 31]-NRT-code), using
(245−30, 245, large)-Net in Base 4 — Upper bound on s
There is no (215, 245, large)-net in base 4, because
- 28 times m-reduction [i] would yield (215, 217, large)-net in base 4, but