Best Known (218, 218+34, s)-Nets in Base 2
(218, 218+34, 1062)-Net over F2 — Constructive and digital
Digital (218, 252, 1062)-net over F2, using
- t-expansion [i] based on digital (217, 252, 1062)-net over F2, using
- trace code for nets [i] based on digital (7, 42, 177)-net over F64, using
- net from sequence [i] based on digital (7, 176)-sequence over F64, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F64 with g(F) = 7 and N(F) ≥ 177, using
- net from sequence [i] based on digital (7, 176)-sequence over F64, using
- trace code for nets [i] based on digital (7, 42, 177)-net over F64, using
(218, 218+34, 4109)-Net over F2 — Digital
Digital (218, 252, 4109)-net over F2, using
- 21 times duplication [i] based on digital (217, 251, 4109)-net over F2, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(2251, 4109, F2, 4, 34) (dual of [(4109, 4), 16185, 35]-NRT-code), using
- OOA 4-folding [i] based on linear OA(2251, 16436, F2, 34) (dual of [16436, 16185, 35]-code), using
- discarding factors / shortening the dual code based on linear OA(2251, 16438, F2, 34) (dual of [16438, 16187, 35]-code), using
- 1 times truncation [i] based on linear OA(2252, 16439, F2, 35) (dual of [16439, 16187, 36]-code), using
- construction X applied to Ce(34) ⊂ Ce(28) [i] based on
- linear OA(2239, 16384, F2, 35) (dual of [16384, 16145, 36]-code), using an extension Ce(34) of the primitive narrow-sense BCH-code C(I) with length 16383 = 214−1, defining interval I = [1,34], and designed minimum distance d ≥ |I|+1 = 35 [i]
- linear OA(2197, 16384, F2, 29) (dual of [16384, 16187, 30]-code), using an extension Ce(28) of the primitive narrow-sense BCH-code C(I) with length 16383 = 214−1, defining interval I = [1,28], and designed minimum distance d ≥ |I|+1 = 29 [i]
- linear OA(213, 55, F2, 5) (dual of [55, 42, 6]-code), using
- discarding factors / shortening the dual code based on linear OA(213, 63, F2, 5) (dual of [63, 50, 6]-code), using
- the primitive expurgated narrow-sense BCH-code C(I) with length 63 = 26−1, defining interval I = [0,3], and designed minimum distance d ≥ |I|+1 = 6 [i]
- discarding factors / shortening the dual code based on linear OA(213, 63, F2, 5) (dual of [63, 50, 6]-code), using
- construction X applied to Ce(34) ⊂ Ce(28) [i] based on
- 1 times truncation [i] based on linear OA(2252, 16439, F2, 35) (dual of [16439, 16187, 36]-code), using
- discarding factors / shortening the dual code based on linear OA(2251, 16438, F2, 34) (dual of [16438, 16187, 35]-code), using
- OOA 4-folding [i] based on linear OA(2251, 16436, F2, 34) (dual of [16436, 16185, 35]-code), using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(2251, 4109, F2, 4, 34) (dual of [(4109, 4), 16185, 35]-NRT-code), using
(218, 218+34, 208075)-Net in Base 2 — Upper bound on s
There is no (218, 252, 208076)-net in base 2, because
- the generalized Rao bound for nets shows that 2m ≥ 7237 561683 450014 269318 828230 628497 806345 274563 737440 690371 689864 691141 819532 > 2252 [i]