Best Known (249−22, 249, s)-Nets in Base 2
(249−22, 249, 381304)-Net over F2 — Constructive and digital
Digital (227, 249, 381304)-net over F2, using
- net defined by OOA [i] based on linear OOA(2249, 381304, F2, 22, 22) (dual of [(381304, 22), 8388439, 23]-NRT-code), using
- OA 11-folding and stacking [i] based on linear OA(2249, 4194344, F2, 22) (dual of [4194344, 4194095, 23]-code), using
- discarding factors / shortening the dual code based on linear OA(2249, 4194354, F2, 22) (dual of [4194354, 4194105, 23]-code), using
- 1 times truncation [i] based on linear OA(2250, 4194355, F2, 23) (dual of [4194355, 4194105, 24]-code), using
- construction X applied to Ce(22) ⊂ Ce(18) [i] based on
- linear OA(2243, 4194304, F2, 23) (dual of [4194304, 4194061, 24]-code), using an extension Ce(22) of the primitive narrow-sense BCH-code C(I) with length 4194303 = 222−1, defining interval I = [1,22], and designed minimum distance d ≥ |I|+1 = 23 [i]
- linear OA(2199, 4194304, F2, 19) (dual of [4194304, 4194105, 20]-code), using an extension Ce(18) of the primitive narrow-sense BCH-code C(I) with length 4194303 = 222−1, defining interval I = [1,18], and designed minimum distance d ≥ |I|+1 = 19 [i]
- linear OA(27, 51, F2, 3) (dual of [51, 44, 4]-code or 51-cap in PG(6,2)), using
- discarding factors / shortening the dual code based on linear OA(27, 63, F2, 3) (dual of [63, 56, 4]-code or 63-cap in PG(6,2)), using
- the primitive expurgated narrow-sense BCH-code C(I) with length 63 = 26−1, defining interval I = [0,1], and designed minimum distance d ≥ |I|+1 = 4 [i]
- discarding factors / shortening the dual code based on linear OA(27, 63, F2, 3) (dual of [63, 56, 4]-code or 63-cap in PG(6,2)), using
- construction X applied to Ce(22) ⊂ Ce(18) [i] based on
- 1 times truncation [i] based on linear OA(2250, 4194355, F2, 23) (dual of [4194355, 4194105, 24]-code), using
- discarding factors / shortening the dual code based on linear OA(2249, 4194354, F2, 22) (dual of [4194354, 4194105, 23]-code), using
- OA 11-folding and stacking [i] based on linear OA(2249, 4194344, F2, 22) (dual of [4194344, 4194095, 23]-code), using
(249−22, 249, 599193)-Net over F2 — Digital
Digital (227, 249, 599193)-net over F2, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(2249, 599193, F2, 7, 22) (dual of [(599193, 7), 4194102, 23]-NRT-code), using
- OOA 7-folding [i] based on linear OA(2249, 4194351, F2, 22) (dual of [4194351, 4194102, 23]-code), using
- discarding factors / shortening the dual code based on linear OA(2249, 4194354, F2, 22) (dual of [4194354, 4194105, 23]-code), using
- 1 times truncation [i] based on linear OA(2250, 4194355, F2, 23) (dual of [4194355, 4194105, 24]-code), using
- construction X applied to Ce(22) ⊂ Ce(18) [i] based on
- linear OA(2243, 4194304, F2, 23) (dual of [4194304, 4194061, 24]-code), using an extension Ce(22) of the primitive narrow-sense BCH-code C(I) with length 4194303 = 222−1, defining interval I = [1,22], and designed minimum distance d ≥ |I|+1 = 23 [i]
- linear OA(2199, 4194304, F2, 19) (dual of [4194304, 4194105, 20]-code), using an extension Ce(18) of the primitive narrow-sense BCH-code C(I) with length 4194303 = 222−1, defining interval I = [1,18], and designed minimum distance d ≥ |I|+1 = 19 [i]
- linear OA(27, 51, F2, 3) (dual of [51, 44, 4]-code or 51-cap in PG(6,2)), using
- discarding factors / shortening the dual code based on linear OA(27, 63, F2, 3) (dual of [63, 56, 4]-code or 63-cap in PG(6,2)), using
- the primitive expurgated narrow-sense BCH-code C(I) with length 63 = 26−1, defining interval I = [0,1], and designed minimum distance d ≥ |I|+1 = 4 [i]
- discarding factors / shortening the dual code based on linear OA(27, 63, F2, 3) (dual of [63, 56, 4]-code or 63-cap in PG(6,2)), using
- construction X applied to Ce(22) ⊂ Ce(18) [i] based on
- 1 times truncation [i] based on linear OA(2250, 4194355, F2, 23) (dual of [4194355, 4194105, 24]-code), using
- discarding factors / shortening the dual code based on linear OA(2249, 4194354, F2, 22) (dual of [4194354, 4194105, 23]-code), using
- OOA 7-folding [i] based on linear OA(2249, 4194351, F2, 22) (dual of [4194351, 4194102, 23]-code), using
(249−22, 249, large)-Net in Base 2 — Upper bound on s
There is no (227, 249, large)-net in base 2, because
- 20 times m-reduction [i] would yield (227, 229, large)-net in base 2, but