Best Known (32−9, 32, s)-Nets in Base 4
(32−9, 32, 257)-Net over F4 — Constructive and digital
Digital (23, 32, 257)-net over F4, using
- net defined by OOA [i] based on linear OOA(432, 257, F4, 9, 9) (dual of [(257, 9), 2281, 10]-NRT-code), using
- OOA 4-folding and stacking with additional row [i] based on linear OA(432, 1029, F4, 9) (dual of [1029, 997, 10]-code), using
- discarding factors / shortening the dual code based on linear OA(432, 1030, F4, 9) (dual of [1030, 998, 10]-code), using
- construction X applied to Ce(8) ⊂ Ce(6) [i] based on
- linear OA(431, 1024, F4, 9) (dual of [1024, 993, 10]-code), using an extension Ce(8) of the primitive narrow-sense BCH-code C(I) with length 1023 = 45−1, defining interval I = [1,8], and designed minimum distance d ≥ |I|+1 = 9 [i]
- linear OA(426, 1024, F4, 7) (dual of [1024, 998, 8]-code), using an extension Ce(6) of the primitive narrow-sense BCH-code C(I) with length 1023 = 45−1, defining interval I = [1,6], and designed minimum distance d ≥ |I|+1 = 7 [i]
- linear OA(41, 6, F4, 1) (dual of [6, 5, 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(8) ⊂ Ce(6) [i] based on
- discarding factors / shortening the dual code based on linear OA(432, 1030, F4, 9) (dual of [1030, 998, 10]-code), using
- OOA 4-folding and stacking with additional row [i] based on linear OA(432, 1029, F4, 9) (dual of [1029, 997, 10]-code), using
(32−9, 32, 518)-Net over F4 — Digital
Digital (23, 32, 518)-net over F4, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(432, 518, F4, 9) (dual of [518, 486, 10]-code), using
- discarding factors / shortening the dual code based on linear OA(432, 1030, F4, 9) (dual of [1030, 998, 10]-code), using
- construction X applied to Ce(8) ⊂ Ce(6) [i] based on
- linear OA(431, 1024, F4, 9) (dual of [1024, 993, 10]-code), using an extension Ce(8) of the primitive narrow-sense BCH-code C(I) with length 1023 = 45−1, defining interval I = [1,8], and designed minimum distance d ≥ |I|+1 = 9 [i]
- linear OA(426, 1024, F4, 7) (dual of [1024, 998, 8]-code), using an extension Ce(6) of the primitive narrow-sense BCH-code C(I) with length 1023 = 45−1, defining interval I = [1,6], and designed minimum distance d ≥ |I|+1 = 7 [i]
- linear OA(41, 6, F4, 1) (dual of [6, 5, 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(8) ⊂ Ce(6) [i] based on
- discarding factors / shortening the dual code based on linear OA(432, 1030, F4, 9) (dual of [1030, 998, 10]-code), using
(32−9, 32, 34186)-Net in Base 4 — Upper bound on s
There is no (23, 32, 34187)-net in base 4, because
- 1 times m-reduction [i] would yield (23, 31, 34187)-net in base 4, but
- the generalized Rao bound for nets shows that 4m ≥ 4 611707 001422 874034 > 431 [i]