Best Known (195−27, 195, s)-Nets in Base 2
(195−27, 195, 1263)-Net over F2 — Constructive and digital
Digital (168, 195, 1263)-net over F2, using
- 24 times duplication [i] based on digital (164, 191, 1263)-net over F2, using
- net defined by OOA [i] based on linear OOA(2191, 1263, F2, 27, 27) (dual of [(1263, 27), 33910, 28]-NRT-code), using
- OOA 13-folding and stacking with additional row [i] based on linear OA(2191, 16420, F2, 27) (dual of [16420, 16229, 28]-code), using
- 1 times code embedding in larger space [i] based on linear OA(2190, 16419, F2, 27) (dual of [16419, 16229, 28]-code), using
- construction X applied to Ce(26) ⊂ Ce(22) [i] based on
- linear OA(2183, 16384, F2, 27) (dual of [16384, 16201, 28]-code), using an extension Ce(26) of the primitive narrow-sense BCH-code C(I) with length 16383 = 214−1, defining interval I = [1,26], and designed minimum distance d ≥ |I|+1 = 27 [i]
- linear OA(2155, 16384, F2, 23) (dual of [16384, 16229, 24]-code), using an extension Ce(22) of the primitive narrow-sense BCH-code C(I) with length 16383 = 214−1, defining interval I = [1,22], and designed minimum distance d ≥ |I|+1 = 23 [i]
- linear OA(27, 35, F2, 3) (dual of [35, 28, 4]-code or 35-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(26) ⊂ Ce(22) [i] based on
- 1 times code embedding in larger space [i] based on linear OA(2190, 16419, F2, 27) (dual of [16419, 16229, 28]-code), using
- OOA 13-folding and stacking with additional row [i] based on linear OA(2191, 16420, F2, 27) (dual of [16420, 16229, 28]-code), using
- net defined by OOA [i] based on linear OOA(2191, 1263, F2, 27, 27) (dual of [(1263, 27), 33910, 28]-NRT-code), using
(195−27, 195, 3686)-Net over F2 — Digital
Digital (168, 195, 3686)-net over F2, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(2195, 3686, F2, 4, 27) (dual of [(3686, 4), 14549, 28]-NRT-code), using
- discarding factors / shortening the dual code based on linear OOA(2195, 4108, F2, 4, 27) (dual of [(4108, 4), 16237, 28]-NRT-code), using
- OOA 4-folding [i] based on linear OA(2195, 16432, F2, 27) (dual of [16432, 16237, 28]-code), using
- construction X applied to Ce(26) ⊂ Ce(20) [i] based on
- linear OA(2183, 16384, F2, 27) (dual of [16384, 16201, 28]-code), using an extension Ce(26) of the primitive narrow-sense BCH-code C(I) with length 16383 = 214−1, defining interval I = [1,26], and designed minimum distance d ≥ |I|+1 = 27 [i]
- linear OA(2141, 16384, F2, 21) (dual of [16384, 16243, 22]-code), using an extension Ce(20) of the primitive narrow-sense BCH-code C(I) with length 16383 = 214−1, defining interval I = [1,20], and designed minimum distance d ≥ |I|+1 = 21 [i]
- linear OA(212, 48, F2, 5) (dual of [48, 36, 6]-code), using
- adding a parity check bit [i] based on linear OA(211, 47, F2, 4) (dual of [47, 36, 5]-code), using
- extracting embedded orthogonal array [i] based on digital (7, 11, 47)-net over F2, using
- adding a parity check bit [i] based on linear OA(211, 47, F2, 4) (dual of [47, 36, 5]-code), using
- construction X applied to Ce(26) ⊂ Ce(20) [i] based on
- OOA 4-folding [i] based on linear OA(2195, 16432, F2, 27) (dual of [16432, 16237, 28]-code), using
- discarding factors / shortening the dual code based on linear OOA(2195, 4108, F2, 4, 27) (dual of [(4108, 4), 16237, 28]-NRT-code), using
(195−27, 195, 176056)-Net in Base 2 — Upper bound on s
There is no (168, 195, 176057)-net in base 2, because
- 1 times m-reduction [i] would yield (168, 194, 176057)-net in base 2, but
- the generalized Rao bound for nets shows that 2m ≥ 25108 558517 529688 673845 421471 634194 212739 418881 357306 235000 > 2194 [i]