Best Known (191−34, 191, s)-Nets in Base 2
(191−34, 191, 320)-Net over F2 — Constructive and digital
Digital (157, 191, 320)-net over F2, using
- 21 times duplication [i] based on digital (156, 190, 320)-net over F2, using
- t-expansion [i] based on digital (155, 190, 320)-net over F2, using
- trace code for nets [i] based on digital (3, 38, 64)-net over F32, using
- net from sequence [i] based on digital (3, 63)-sequence over F32, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F32 with g(F) = 3 and N(F) ≥ 64, using
- net from sequence [i] based on digital (3, 63)-sequence over F32, using
- trace code for nets [i] based on digital (3, 38, 64)-net over F32, using
- t-expansion [i] based on digital (155, 190, 320)-net over F2, using
(191−34, 191, 806)-Net over F2 — Digital
Digital (157, 191, 806)-net over F2, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(2191, 806, F2, 2, 34) (dual of [(806, 2), 1421, 35]-NRT-code), using
- discarding factors / shortening the dual code based on linear OOA(2191, 1031, F2, 2, 34) (dual of [(1031, 2), 1871, 35]-NRT-code), using
- 1 times NRT-code embedding in larger space [i] based on linear OOA(2189, 1030, F2, 2, 34) (dual of [(1030, 2), 1871, 35]-NRT-code), using
- OOA 2-folding [i] based on linear OA(2189, 2060, F2, 34) (dual of [2060, 1871, 35]-code), using
- strength reduction [i] based on linear OA(2189, 2060, F2, 35) (dual of [2060, 1871, 36]-code), using
- construction X applied to Ce(34) ⊂ Ce(32) [i] based on
- linear OA(2188, 2048, F2, 35) (dual of [2048, 1860, 36]-code), using an extension Ce(34) of the primitive narrow-sense BCH-code C(I) with length 2047 = 211−1, defining interval I = [1,34], and designed minimum distance d ≥ |I|+1 = 35 [i]
- linear OA(2177, 2048, F2, 33) (dual of [2048, 1871, 34]-code), using an extension Ce(32) of the primitive narrow-sense BCH-code C(I) with length 2047 = 211−1, defining interval I = [1,32], and designed minimum distance d ≥ |I|+1 = 33 [i]
- linear OA(21, 12, F2, 1) (dual of [12, 11, 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(34) ⊂ Ce(32) [i] based on
- strength reduction [i] based on linear OA(2189, 2060, F2, 35) (dual of [2060, 1871, 36]-code), using
- OOA 2-folding [i] based on linear OA(2189, 2060, F2, 34) (dual of [2060, 1871, 35]-code), using
- 1 times NRT-code embedding in larger space [i] based on linear OOA(2189, 1030, F2, 2, 34) (dual of [(1030, 2), 1871, 35]-NRT-code), using
- discarding factors / shortening the dual code based on linear OOA(2191, 1031, F2, 2, 34) (dual of [(1031, 2), 1871, 35]-NRT-code), using
(191−34, 191, 17277)-Net in Base 2 — Upper bound on s
There is no (157, 191, 17278)-net in base 2, because
- the generalized Rao bound for nets shows that 2m ≥ 3140 424953 256597 053120 230787 590685 636477 767925 133254 638159 > 2191 [i]