Best Known (148−19, 148, s)-Nets in Base 4
(148−19, 148, 116513)-Net over F4 — Constructive and digital
Digital (129, 148, 116513)-net over F4, using
- net defined by OOA [i] based on linear OOA(4148, 116513, F4, 19, 19) (dual of [(116513, 19), 2213599, 20]-NRT-code), using
- OOA 9-folding and stacking with additional row [i] based on linear OA(4148, 1048618, F4, 19) (dual of [1048618, 1048470, 20]-code), using
- discarding factors / shortening the dual code based on linear OA(4148, 1048619, F4, 19) (dual of [1048619, 1048471, 20]-code), using
- construction X applied to Ce(18) ⊂ Ce(13) [i] based on
- linear OA(4141, 1048576, F4, 19) (dual of [1048576, 1048435, 20]-code), using an extension Ce(18) of the primitive narrow-sense BCH-code C(I) with length 1048575 = 410−1, defining interval I = [1,18], and designed minimum distance d ≥ |I|+1 = 19 [i]
- linear OA(4101, 1048576, F4, 14) (dual of [1048576, 1048475, 15]-code), using an extension Ce(13) of the primitive narrow-sense BCH-code C(I) with length 1048575 = 410−1, defining interval I = [1,13], and designed minimum distance d ≥ |I|+1 = 14 [i]
- linear OA(47, 43, F4, 4) (dual of [43, 36, 5]-code), using
- construction X applied to Ce(18) ⊂ Ce(13) [i] based on
- discarding factors / shortening the dual code based on linear OA(4148, 1048619, F4, 19) (dual of [1048619, 1048471, 20]-code), using
- OOA 9-folding and stacking with additional row [i] based on linear OA(4148, 1048618, F4, 19) (dual of [1048618, 1048470, 20]-code), using
(148−19, 148, 524309)-Net over F4 — Digital
Digital (129, 148, 524309)-net over F4, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(4148, 524309, F4, 2, 19) (dual of [(524309, 2), 1048470, 20]-NRT-code), using
- OOA 2-folding [i] based on linear OA(4148, 1048618, F4, 19) (dual of [1048618, 1048470, 20]-code), using
- discarding factors / shortening the dual code based on linear OA(4148, 1048619, F4, 19) (dual of [1048619, 1048471, 20]-code), using
- construction X applied to Ce(18) ⊂ Ce(13) [i] based on
- linear OA(4141, 1048576, F4, 19) (dual of [1048576, 1048435, 20]-code), using an extension Ce(18) of the primitive narrow-sense BCH-code C(I) with length 1048575 = 410−1, defining interval I = [1,18], and designed minimum distance d ≥ |I|+1 = 19 [i]
- linear OA(4101, 1048576, F4, 14) (dual of [1048576, 1048475, 15]-code), using an extension Ce(13) of the primitive narrow-sense BCH-code C(I) with length 1048575 = 410−1, defining interval I = [1,13], and designed minimum distance d ≥ |I|+1 = 14 [i]
- linear OA(47, 43, F4, 4) (dual of [43, 36, 5]-code), using
- construction X applied to Ce(18) ⊂ Ce(13) [i] based on
- discarding factors / shortening the dual code based on linear OA(4148, 1048619, F4, 19) (dual of [1048619, 1048471, 20]-code), using
- OOA 2-folding [i] based on linear OA(4148, 1048618, F4, 19) (dual of [1048618, 1048470, 20]-code), using
(148−19, 148, large)-Net in Base 4 — Upper bound on s
There is no (129, 148, large)-net in base 4, because
- 17 times m-reduction [i] would yield (129, 131, large)-net in base 4, but