Best Known (189, 189+26, s)-Nets in Base 4
(189, 189+26, 322641)-Net over F4 — Constructive and digital
Digital (189, 215, 322641)-net over F4, using
- net defined by OOA [i] based on linear OOA(4215, 322641, F4, 26, 26) (dual of [(322641, 26), 8388451, 27]-NRT-code), using
- OA 13-folding and stacking [i] based on linear OA(4215, 4194333, F4, 26) (dual of [4194333, 4194118, 27]-code), using
- discarding factors / shortening the dual code based on linear OA(4215, 4194342, F4, 26) (dual of [4194342, 4194127, 27]-code), using
- construction X applied to Ce(25) ⊂ Ce(21) [i] based on
- linear OA(4210, 4194304, F4, 26) (dual of [4194304, 4194094, 27]-code), using an extension Ce(25) of the primitive narrow-sense BCH-code C(I) with length 4194303 = 411−1, defining interval I = [1,25], and designed minimum distance d ≥ |I|+1 = 26 [i]
- 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(45, 38, F4, 3) (dual of [38, 33, 4]-code or 38-cap in PG(4,4)), using
- discarding factors / shortening the dual code based on linear OA(45, 41, F4, 3) (dual of [41, 36, 4]-code or 41-cap in PG(4,4)), using
- construction X applied to Ce(25) ⊂ Ce(21) [i] based on
- discarding factors / shortening the dual code based on linear OA(4215, 4194342, F4, 26) (dual of [4194342, 4194127, 27]-code), using
- OA 13-folding and stacking [i] based on linear OA(4215, 4194333, F4, 26) (dual of [4194333, 4194118, 27]-code), using
(189, 189+26, 1398114)-Net over F4 — Digital
Digital (189, 215, 1398114)-net over F4, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(4215, 1398114, F4, 3, 26) (dual of [(1398114, 3), 4194127, 27]-NRT-code), using
- OOA 3-folding [i] based on linear OA(4215, 4194342, F4, 26) (dual of [4194342, 4194127, 27]-code), using
- construction X applied to Ce(25) ⊂ Ce(21) [i] based on
- linear OA(4210, 4194304, F4, 26) (dual of [4194304, 4194094, 27]-code), using an extension Ce(25) of the primitive narrow-sense BCH-code C(I) with length 4194303 = 411−1, defining interval I = [1,25], and designed minimum distance d ≥ |I|+1 = 26 [i]
- 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(45, 38, F4, 3) (dual of [38, 33, 4]-code or 38-cap in PG(4,4)), using
- discarding factors / shortening the dual code based on linear OA(45, 41, F4, 3) (dual of [41, 36, 4]-code or 41-cap in PG(4,4)), using
- construction X applied to Ce(25) ⊂ Ce(21) [i] based on
- OOA 3-folding [i] based on linear OA(4215, 4194342, F4, 26) (dual of [4194342, 4194127, 27]-code), using
(189, 189+26, large)-Net in Base 4 — Upper bound on s
There is no (189, 215, large)-net in base 4, because
- 24 times m-reduction [i] would yield (189, 191, large)-net in base 4, but