Best Known (157, 157+18, s)-Nets in Base 2
(157, 157+18, 58256)-Net over F2 — Constructive and digital
Digital (157, 175, 58256)-net over F2, using
- 22 times duplication [i] based on digital (155, 173, 58256)-net over F2, using
- t-expansion [i] based on digital (154, 173, 58256)-net over F2, using
- net defined by OOA [i] based on linear OOA(2173, 58256, F2, 19, 19) (dual of [(58256, 19), 1106691, 20]-NRT-code), using
- OOA 9-folding and stacking with additional row [i] based on linear OA(2173, 524305, F2, 19) (dual of [524305, 524132, 20]-code), using
- discarding factors / shortening the dual code based on linear OA(2173, 524308, F2, 19) (dual of [524308, 524135, 20]-code), using
- construction X applied to Ce(18) ⊂ Ce(16) [i] based on
- linear OA(2172, 524288, F2, 19) (dual of [524288, 524116, 20]-code), using an extension Ce(18) of the primitive narrow-sense BCH-code C(I) with length 524287 = 219−1, defining interval I = [1,18], and designed minimum distance d ≥ |I|+1 = 19 [i]
- linear OA(2153, 524288, F2, 17) (dual of [524288, 524135, 18]-code), using an extension Ce(16) of the primitive narrow-sense BCH-code C(I) with length 524287 = 219−1, defining interval I = [1,16], and designed minimum distance d ≥ |I|+1 = 17 [i]
- linear OA(21, 20, F2, 1) (dual of [20, 19, 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 X applied to Ce(18) ⊂ Ce(16) [i] based on
- discarding factors / shortening the dual code based on linear OA(2173, 524308, F2, 19) (dual of [524308, 524135, 20]-code), using
- OOA 9-folding and stacking with additional row [i] based on linear OA(2173, 524305, F2, 19) (dual of [524305, 524132, 20]-code), using
- net defined by OOA [i] based on linear OOA(2173, 58256, F2, 19, 19) (dual of [(58256, 19), 1106691, 20]-NRT-code), using
- t-expansion [i] based on digital (154, 173, 58256)-net over F2, using
(157, 157+18, 97247)-Net over F2 — Digital
Digital (157, 175, 97247)-net over F2, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(2175, 97247, F2, 5, 18) (dual of [(97247, 5), 486060, 19]-NRT-code), using
- discarding factors / shortening the dual code based on linear OOA(2175, 104862, F2, 5, 18) (dual of [(104862, 5), 524135, 19]-NRT-code), using
- 21 times duplication [i] based on linear OOA(2174, 104862, F2, 5, 18) (dual of [(104862, 5), 524136, 19]-NRT-code), using
- OOA 5-folding [i] based on linear OA(2174, 524310, F2, 18) (dual of [524310, 524136, 19]-code), using
- 2 times code embedding in larger space [i] based on linear OA(2172, 524308, F2, 18) (dual of [524308, 524136, 19]-code), using
- 1 times truncation [i] based on linear OA(2173, 524309, F2, 19) (dual of [524309, 524136, 20]-code), using
- construction X4 applied to Ce(18) ⊂ Ce(16) [i] based on
- linear OA(2172, 524288, F2, 19) (dual of [524288, 524116, 20]-code), using an extension Ce(18) of the primitive narrow-sense BCH-code C(I) with length 524287 = 219−1, defining interval I = [1,18], and designed minimum distance d ≥ |I|+1 = 19 [i]
- linear OA(2153, 524288, F2, 17) (dual of [524288, 524135, 18]-code), using an extension Ce(16) of the primitive narrow-sense BCH-code C(I) with length 524287 = 219−1, defining interval I = [1,16], and designed minimum distance d ≥ |I|+1 = 17 [i]
- linear OA(220, 21, F2, 19) (dual of [21, 1, 20]-code), using
- strength reduction [i] based on linear OA(220, 21, F2, 20) (dual of [21, 1, 21]-code or 21-arc in PG(19,2)), using
- dual of repetition code with length 21 [i]
- strength reduction [i] based on linear OA(220, 21, F2, 20) (dual of [21, 1, 21]-code or 21-arc in PG(19,2)), using
- linear OA(21, 21, F2, 1) (dual of [21, 20, 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(18) ⊂ Ce(16) [i] based on
- 1 times truncation [i] based on linear OA(2173, 524309, F2, 19) (dual of [524309, 524136, 20]-code), using
- 2 times code embedding in larger space [i] based on linear OA(2172, 524308, F2, 18) (dual of [524308, 524136, 19]-code), using
- OOA 5-folding [i] based on linear OA(2174, 524310, F2, 18) (dual of [524310, 524136, 19]-code), using
- 21 times duplication [i] based on linear OOA(2174, 104862, F2, 5, 18) (dual of [(104862, 5), 524136, 19]-NRT-code), using
- discarding factors / shortening the dual code based on linear OOA(2175, 104862, F2, 5, 18) (dual of [(104862, 5), 524135, 19]-NRT-code), using
(157, 157+18, 2958765)-Net in Base 2 — Upper bound on s
There is no (157, 175, 2958766)-net in base 2, because
- the generalized Rao bound for nets shows that 2m ≥ 47890 537979 103982 662533 108141 553610 445212 223144 442805 > 2175 [i]