Best Known (99−19, 99, s)-Nets in Base 4
(99−19, 99, 1821)-Net over F4 — Constructive and digital
Digital (80, 99, 1821)-net over F4, using
- net defined by OOA [i] based on linear OOA(499, 1821, F4, 19, 19) (dual of [(1821, 19), 34500, 20]-NRT-code), using
- OOA 9-folding and stacking with additional row [i] based on linear OA(499, 16390, F4, 19) (dual of [16390, 16291, 20]-code), using
- discarding factors / shortening the dual code based on linear OA(499, 16391, F4, 19) (dual of [16391, 16292, 20]-code), using
- construction X applied to Ce(18) ⊂ Ce(17) [i] based on
- linear OA(499, 16384, F4, 19) (dual of [16384, 16285, 20]-code), using an extension Ce(18) of the primitive narrow-sense BCH-code C(I) with length 16383 = 47−1, defining interval I = [1,18], and designed minimum distance d ≥ |I|+1 = 19 [i]
- linear OA(492, 16384, F4, 18) (dual of [16384, 16292, 19]-code), using an extension Ce(17) of the primitive narrow-sense BCH-code C(I) with length 16383 = 47−1, defining interval I = [1,17], and designed minimum distance d ≥ |I|+1 = 18 [i]
- linear OA(40, 7, F4, 0) (dual of [7, 7, 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(18) ⊂ Ce(17) [i] based on
- discarding factors / shortening the dual code based on linear OA(499, 16391, F4, 19) (dual of [16391, 16292, 20]-code), using
- OOA 9-folding and stacking with additional row [i] based on linear OA(499, 16390, F4, 19) (dual of [16390, 16291, 20]-code), using
(99−19, 99, 8195)-Net over F4 — Digital
Digital (80, 99, 8195)-net over F4, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(499, 8195, F4, 2, 19) (dual of [(8195, 2), 16291, 20]-NRT-code), using
- OOA 2-folding [i] based on linear OA(499, 16390, F4, 19) (dual of [16390, 16291, 20]-code), using
- discarding factors / shortening the dual code based on linear OA(499, 16391, F4, 19) (dual of [16391, 16292, 20]-code), using
- construction X applied to Ce(18) ⊂ Ce(17) [i] based on
- linear OA(499, 16384, F4, 19) (dual of [16384, 16285, 20]-code), using an extension Ce(18) of the primitive narrow-sense BCH-code C(I) with length 16383 = 47−1, defining interval I = [1,18], and designed minimum distance d ≥ |I|+1 = 19 [i]
- linear OA(492, 16384, F4, 18) (dual of [16384, 16292, 19]-code), using an extension Ce(17) of the primitive narrow-sense BCH-code C(I) with length 16383 = 47−1, defining interval I = [1,17], and designed minimum distance d ≥ |I|+1 = 18 [i]
- linear OA(40, 7, F4, 0) (dual of [7, 7, 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(18) ⊂ Ce(17) [i] based on
- discarding factors / shortening the dual code based on linear OA(499, 16391, F4, 19) (dual of [16391, 16292, 20]-code), using
- OOA 2-folding [i] based on linear OA(499, 16390, F4, 19) (dual of [16390, 16291, 20]-code), using
(99−19, 99, 4970429)-Net in Base 4 — Upper bound on s
There is no (80, 99, 4970430)-net in base 4, because
- 1 times m-reduction [i] would yield (80, 98, 4970430)-net in base 4, but
- the generalized Rao bound for nets shows that 4m ≥ 100433 690449 887941 710873 100481 013817 187623 821146 516921 514039 > 498 [i]