Best Known (25, 32, s)-Nets in Base 4
(25, 32, 1369)-Net over F4 — Constructive and digital
Digital (25, 32, 1369)-net over F4, using
- net defined by OOA [i] based on linear OOA(432, 1369, F4, 7, 7) (dual of [(1369, 7), 9551, 8]-NRT-code), using
- OOA 3-folding and stacking with additional row [i] based on linear OA(432, 4108, F4, 7) (dual of [4108, 4076, 8]-code), using
- discarding factors / shortening the dual code based on linear OA(432, 4109, F4, 7) (dual of [4109, 4077, 8]-code), using
- construction X applied to Ce(6) ⊂ Ce(4) [i] based on
- linear OA(431, 4096, F4, 7) (dual of [4096, 4065, 8]-code), using an extension Ce(6) of the primitive narrow-sense BCH-code C(I) with length 4095 = 46−1, defining interval I = [1,6], and designed minimum distance d ≥ |I|+1 = 7 [i]
- linear OA(419, 4096, F4, 5) (dual of [4096, 4077, 6]-code), using an extension Ce(4) of the primitive narrow-sense BCH-code C(I) with length 4095 = 46−1, defining interval I = [1,4], and designed minimum distance d ≥ |I|+1 = 5 [i]
- linear OA(41, 13, F4, 1) (dual of [13, 12, 2]-code), using
- discarding factors / shortening the dual code based on linear OA(41, s, F4, 1) (dual of [s, s−1, 2]-code) with arbitrarily large s, using
- construction X applied to Ce(6) ⊂ Ce(4) [i] based on
- discarding factors / shortening the dual code based on linear OA(432, 4109, F4, 7) (dual of [4109, 4077, 8]-code), using
- OOA 3-folding and stacking with additional row [i] based on linear OA(432, 4108, F4, 7) (dual of [4108, 4076, 8]-code), using
(25, 32, 4110)-Net over F4 — Digital
Digital (25, 32, 4110)-net over F4, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(432, 4110, F4, 7) (dual of [4110, 4078, 8]-code), using
- construction X4 applied to Ce(6) ⊂ Ce(4) [i] based on
- linear OA(431, 4096, F4, 7) (dual of [4096, 4065, 8]-code), using an extension Ce(6) of the primitive narrow-sense BCH-code C(I) with length 4095 = 46−1, defining interval I = [1,6], and designed minimum distance d ≥ |I|+1 = 7 [i]
- linear OA(419, 4096, F4, 5) (dual of [4096, 4077, 6]-code), using an extension Ce(4) of the primitive narrow-sense BCH-code C(I) with length 4095 = 46−1, defining interval I = [1,4], and designed minimum distance d ≥ |I|+1 = 5 [i]
- linear OA(413, 14, F4, 13) (dual of [14, 1, 14]-code or 14-arc in PG(12,4)), using
- dual of repetition code with length 14 [i]
- linear OA(41, 14, F4, 1) (dual of [14, 13, 2]-code), using
- discarding factors / shortening the dual code based on linear OA(41, s, F4, 1) (dual of [s, s−1, 2]-code) with arbitrarily large s, using
- construction X4 applied to Ce(6) ⊂ Ce(4) [i] based on
(25, 32, 1008203)-Net in Base 4 — Upper bound on s
There is no (25, 32, 1008204)-net in base 4, because
- 1 times m-reduction [i] would yield (25, 31, 1008204)-net in base 4, but
- the generalized Rao bound for nets shows that 4m ≥ 4 611692 555469 741547 > 431 [i]