Best Known (140, 163, s)-Nets in Base 2
(140, 163, 1492)-Net over F2 — Constructive and digital
Digital (140, 163, 1492)-net over F2, using
- 22 times duplication [i] based on digital (138, 161, 1492)-net over F2, using
- net defined by OOA [i] based on linear OOA(2161, 1492, F2, 23, 23) (dual of [(1492, 23), 34155, 24]-NRT-code), using
- OOA 11-folding and stacking with additional row [i] based on linear OA(2161, 16413, F2, 23) (dual of [16413, 16252, 24]-code), using
- discarding factors / shortening the dual code based on linear OA(2161, 16416, F2, 23) (dual of [16416, 16255, 24]-code), using
- construction X applied to Ce(22) ⊂ Ce(18) [i] based on
- 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(2127, 16384, F2, 19) (dual of [16384, 16257, 20]-code), using an extension Ce(18) of the primitive narrow-sense BCH-code C(I) with length 16383 = 214−1, defining interval I = [1,18], and designed minimum distance d ≥ |I|+1 = 19 [i]
- linear OA(26, 32, F2, 3) (dual of [32, 26, 4]-code or 32-cap in PG(5,2)), using
- construction X applied to Ce(22) ⊂ Ce(18) [i] based on
- discarding factors / shortening the dual code based on linear OA(2161, 16416, F2, 23) (dual of [16416, 16255, 24]-code), using
- OOA 11-folding and stacking with additional row [i] based on linear OA(2161, 16413, F2, 23) (dual of [16413, 16252, 24]-code), using
- net defined by OOA [i] based on linear OOA(2161, 1492, F2, 23, 23) (dual of [(1492, 23), 34155, 24]-NRT-code), using
(140, 163, 3419)-Net over F2 — Digital
Digital (140, 163, 3419)-net over F2, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(2163, 3419, F2, 4, 23) (dual of [(3419, 4), 13513, 24]-NRT-code), using
- discarding factors / shortening the dual code based on linear OOA(2163, 4105, F2, 4, 23) (dual of [(4105, 4), 16257, 24]-NRT-code), using
- OOA 4-folding [i] based on linear OA(2163, 16420, F2, 23) (dual of [16420, 16257, 24]-code), using
- 1 times code embedding in larger space [i] based on linear OA(2162, 16419, F2, 23) (dual of [16419, 16257, 24]-code), using
- construction X applied to Ce(22) ⊂ Ce(18) [i] based on
- 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(2127, 16384, F2, 19) (dual of [16384, 16257, 20]-code), using an extension Ce(18) of the primitive narrow-sense BCH-code C(I) with length 16383 = 214−1, defining interval I = [1,18], and designed minimum distance d ≥ |I|+1 = 19 [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(22) ⊂ Ce(18) [i] based on
- 1 times code embedding in larger space [i] based on linear OA(2162, 16419, F2, 23) (dual of [16419, 16257, 24]-code), using
- OOA 4-folding [i] based on linear OA(2163, 16420, F2, 23) (dual of [16420, 16257, 24]-code), using
- discarding factors / shortening the dual code based on linear OOA(2163, 4105, F2, 4, 23) (dual of [(4105, 4), 16257, 24]-NRT-code), using
(140, 163, 133141)-Net in Base 2 — Upper bound on s
There is no (140, 163, 133142)-net in base 2, because
- 1 times m-reduction [i] would yield (140, 162, 133142)-net in base 2, but
- the generalized Rao bound for nets shows that 2m ≥ 5 846341 094483 404377 502658 585940 484614 188861 604412 > 2162 [i]