Best Known (120−20, 120, s)-Nets in Base 9
(120−20, 120, 478297)-Net over F9 — Constructive and digital
Digital (100, 120, 478297)-net over F9, using
- net defined by OOA [i] based on linear OOA(9120, 478297, F9, 20, 20) (dual of [(478297, 20), 9565820, 21]-NRT-code), using
- OA 10-folding and stacking [i] based on linear OA(9120, 4782970, F9, 20) (dual of [4782970, 4782850, 21]-code), using
- discarding factors / shortening the dual code based on linear OA(9120, 4782976, F9, 20) (dual of [4782976, 4782856, 21]-code), using
- construction X applied to Ce(19) ⊂ Ce(18) [i] based on
- linear OA(9120, 4782969, F9, 20) (dual of [4782969, 4782849, 21]-code), using an extension Ce(19) of the primitive narrow-sense BCH-code C(I) with length 4782968 = 97−1, defining interval I = [1,19], and designed minimum distance d ≥ |I|+1 = 20 [i]
- linear OA(9113, 4782969, F9, 19) (dual of [4782969, 4782856, 20]-code), using an extension Ce(18) of the primitive narrow-sense BCH-code C(I) with length 4782968 = 97−1, defining interval I = [1,18], and designed minimum distance d ≥ |I|+1 = 19 [i]
- linear OA(90, 7, F9, 0) (dual of [7, 7, 1]-code), using
- discarding factors / shortening the dual code based on linear OA(90, s, F9, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
- construction X applied to Ce(19) ⊂ Ce(18) [i] based on
- discarding factors / shortening the dual code based on linear OA(9120, 4782976, F9, 20) (dual of [4782976, 4782856, 21]-code), using
- OA 10-folding and stacking [i] based on linear OA(9120, 4782970, F9, 20) (dual of [4782970, 4782850, 21]-code), using
(120−20, 120, 2391488)-Net over F9 — Digital
Digital (100, 120, 2391488)-net over F9, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(9120, 2391488, F9, 2, 20) (dual of [(2391488, 2), 4782856, 21]-NRT-code), using
- OOA 2-folding [i] based on linear OA(9120, 4782976, F9, 20) (dual of [4782976, 4782856, 21]-code), using
- construction X applied to Ce(19) ⊂ Ce(18) [i] based on
- linear OA(9120, 4782969, F9, 20) (dual of [4782969, 4782849, 21]-code), using an extension Ce(19) of the primitive narrow-sense BCH-code C(I) with length 4782968 = 97−1, defining interval I = [1,19], and designed minimum distance d ≥ |I|+1 = 20 [i]
- linear OA(9113, 4782969, F9, 19) (dual of [4782969, 4782856, 20]-code), using an extension Ce(18) of the primitive narrow-sense BCH-code C(I) with length 4782968 = 97−1, defining interval I = [1,18], and designed minimum distance d ≥ |I|+1 = 19 [i]
- linear OA(90, 7, F9, 0) (dual of [7, 7, 1]-code), using
- discarding factors / shortening the dual code based on linear OA(90, s, F9, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
- construction X applied to Ce(19) ⊂ Ce(18) [i] based on
- OOA 2-folding [i] based on linear OA(9120, 4782976, F9, 20) (dual of [4782976, 4782856, 21]-code), using
(120−20, 120, large)-Net in Base 9 — Upper bound on s
There is no (100, 120, large)-net in base 9, because
- 18 times m-reduction [i] would yield (100, 102, large)-net in base 9, but