Best Known (221, 221+17, s)-Nets in Base 2
(221, 221+17, 1050626)-Net over F2 — Constructive and digital
Digital (221, 238, 1050626)-net over F2, using
- (u, u+v)-construction [i] based on
- digital (45, 53, 2051)-net over F2, using
- net defined by OOA [i] based on linear OOA(253, 2051, F2, 8, 8) (dual of [(2051, 8), 16355, 9]-NRT-code), using
- OA 4-folding and stacking [i] based on linear OA(253, 8204, F2, 8) (dual of [8204, 8151, 9]-code), using
- discarding factors / shortening the dual code based on linear OA(253, 8206, F2, 8) (dual of [8206, 8153, 9]-code), using
- 1 times truncation [i] based on linear OA(254, 8207, F2, 9) (dual of [8207, 8153, 10]-code), using
- construction X4 applied to Ce(8) ⊂ Ce(6) [i] based on
- linear OA(253, 8192, F2, 9) (dual of [8192, 8139, 10]-code), using an extension Ce(8) of the primitive narrow-sense BCH-code C(I) with length 8191 = 213−1, defining interval I = [1,8], and designed minimum distance d ≥ |I|+1 = 9 [i]
- linear OA(240, 8192, F2, 7) (dual of [8192, 8152, 8]-code), using an extension Ce(6) of the primitive narrow-sense BCH-code C(I) with length 8191 = 213−1, defining interval I = [1,6], and designed minimum distance d ≥ |I|+1 = 7 [i]
- linear OA(214, 15, F2, 13) (dual of [15, 1, 14]-code), using
- strength reduction [i] based on linear OA(214, 15, F2, 14) (dual of [15, 1, 15]-code or 15-arc in PG(13,2)), using
- dual of repetition code with length 15 [i]
- strength reduction [i] based on linear OA(214, 15, F2, 14) (dual of [15, 1, 15]-code or 15-arc in PG(13,2)), using
- linear OA(21, 15, F2, 1) (dual of [15, 14, 2]-code), using
- discarding factors / shortening the dual code based on linear OA(21, s, F2, 1) (dual of [s, s−1, 2]-code) with arbitrarily large s, using
- construction X4 applied to Ce(8) ⊂ Ce(6) [i] based on
- 1 times truncation [i] based on linear OA(254, 8207, F2, 9) (dual of [8207, 8153, 10]-code), using
- discarding factors / shortening the dual code based on linear OA(253, 8206, F2, 8) (dual of [8206, 8153, 9]-code), using
- OA 4-folding and stacking [i] based on linear OA(253, 8204, F2, 8) (dual of [8204, 8151, 9]-code), using
- net defined by OOA [i] based on linear OOA(253, 2051, F2, 8, 8) (dual of [(2051, 8), 16355, 9]-NRT-code), using
- digital (168, 185, 1048575)-net over F2, using
- net defined by OOA [i] based on linear OOA(2185, 1048575, F2, 17, 17) (dual of [(1048575, 17), 17825590, 18]-NRT-code), using
- OOA 8-folding and stacking with additional row [i] based on linear OA(2185, 8388601, F2, 17) (dual of [8388601, 8388416, 18]-code), using
- discarding factors / shortening the dual code based on linear OA(2185, large, F2, 17) (dual of [large, large−185, 18]-code), using
- the expurgated narrow-sense BCH-code C(I) with length 8388609 | 246−1, defining interval I = [0,8], and minimum distance d ≥ |{−8,−7,…,8}|+1 = 18 (BCH-bound) [i]
- discarding factors / shortening the dual code based on linear OA(2185, large, F2, 17) (dual of [large, large−185, 18]-code), using
- OOA 8-folding and stacking with additional row [i] based on linear OA(2185, 8388601, F2, 17) (dual of [8388601, 8388416, 18]-code), using
- net defined by OOA [i] based on linear OOA(2185, 1048575, F2, 17, 17) (dual of [(1048575, 17), 17825590, 18]-NRT-code), using
- digital (45, 53, 2051)-net over F2, using
(221, 221+17, 2100208)-Net over F2 — Digital
Digital (221, 238, 2100208)-net over F2, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(2238, 2100208, F2, 4, 17) (dual of [(2100208, 4), 8400594, 18]-NRT-code), using
- (u, u+v)-construction [i] based on
- linear OOA(253, 3058, F2, 4, 8) (dual of [(3058, 4), 12179, 9]-NRT-code), using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(253, 3058, F2, 2, 8) (dual of [(3058, 2), 6063, 9]-NRT-code), using
- discarding factors / shortening the dual code based on linear OOA(253, 4103, F2, 2, 8) (dual of [(4103, 2), 8153, 9]-NRT-code), using
- OOA 2-folding [i] based on linear OA(253, 8206, F2, 8) (dual of [8206, 8153, 9]-code), using
- 1 times truncation [i] based on linear OA(254, 8207, F2, 9) (dual of [8207, 8153, 10]-code), using
- construction X4 applied to Ce(8) ⊂ Ce(6) [i] based on
- linear OA(253, 8192, F2, 9) (dual of [8192, 8139, 10]-code), using an extension Ce(8) of the primitive narrow-sense BCH-code C(I) with length 8191 = 213−1, defining interval I = [1,8], and designed minimum distance d ≥ |I|+1 = 9 [i]
- linear OA(240, 8192, F2, 7) (dual of [8192, 8152, 8]-code), using an extension Ce(6) of the primitive narrow-sense BCH-code C(I) with length 8191 = 213−1, defining interval I = [1,6], and designed minimum distance d ≥ |I|+1 = 7 [i]
- linear OA(214, 15, F2, 13) (dual of [15, 1, 14]-code), using
- strength reduction [i] based on linear OA(214, 15, F2, 14) (dual of [15, 1, 15]-code or 15-arc in PG(13,2)), using
- dual of repetition code with length 15 [i]
- strength reduction [i] based on linear OA(214, 15, F2, 14) (dual of [15, 1, 15]-code or 15-arc in PG(13,2)), using
- linear OA(21, 15, F2, 1) (dual of [15, 14, 2]-code), using
- discarding factors / shortening the dual code based on linear OA(21, s, F2, 1) (dual of [s, s−1, 2]-code) with arbitrarily large s, using
- construction X4 applied to Ce(8) ⊂ Ce(6) [i] based on
- 1 times truncation [i] based on linear OA(254, 8207, F2, 9) (dual of [8207, 8153, 10]-code), using
- OOA 2-folding [i] based on linear OA(253, 8206, F2, 8) (dual of [8206, 8153, 9]-code), using
- discarding factors / shortening the dual code based on linear OOA(253, 4103, F2, 2, 8) (dual of [(4103, 2), 8153, 9]-NRT-code), using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(253, 3058, F2, 2, 8) (dual of [(3058, 2), 6063, 9]-NRT-code), using
- linear OOA(2185, 2097150, F2, 4, 17) (dual of [(2097150, 4), 8388415, 18]-NRT-code), using
- OOA 4-folding [i] based on linear OA(2185, 8388600, F2, 17) (dual of [8388600, 8388415, 18]-code), using
- discarding factors / shortening the dual code based on linear OA(2185, large, F2, 17) (dual of [large, large−185, 18]-code), using
- the expurgated narrow-sense BCH-code C(I) with length 8388609 | 246−1, defining interval I = [0,8], and minimum distance d ≥ |{−8,−7,…,8}|+1 = 18 (BCH-bound) [i]
- discarding factors / shortening the dual code based on linear OA(2185, large, F2, 17) (dual of [large, large−185, 18]-code), using
- OOA 4-folding [i] based on linear OA(2185, 8388600, F2, 17) (dual of [8388600, 8388415, 18]-code), using
- linear OOA(253, 3058, F2, 4, 8) (dual of [(3058, 4), 12179, 9]-NRT-code), using
- (u, u+v)-construction [i] based on
(221, 221+17, large)-Net in Base 2 — Upper bound on s
There is no (221, 238, large)-net in base 2, because
- 15 times m-reduction [i] would yield (221, 223, large)-net in base 2, but