Best Known (47, 64, s)-Nets in Base 7
(47, 64, 308)-Net over F7 — Constructive and digital
Digital (47, 64, 308)-net over F7, using
- generalized (u, u+v)-construction [i] based on
- digital (0, 4, 8)-net over F7, using
- net from sequence [i] based on digital (0, 7)-sequence over F7, using
- Faure sequence [i]
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F7 with g(F) = 0 and N(F) ≥ 8, using
- the rational function field F7(x) [i]
- Niederreiter sequence [i]
- net from sequence [i] based on digital (0, 7)-sequence over F7, using
- digital (5, 10, 100)-net over F7, using
- trace code for nets [i] based on digital (0, 5, 50)-net over F49, using
- net from sequence [i] based on digital (0, 49)-sequence over F49, using
- generalized Faure sequence [i]
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F49 with g(F) = 0 and N(F) ≥ 50, using
- the rational function field F49(x) [i]
- Niederreiter sequence [i]
- net from sequence [i] based on digital (0, 49)-sequence over F49, using
- trace code for nets [i] based on digital (0, 5, 50)-net over F49, using
- digital (8, 16, 100)-net over F7, using
- trace code for nets [i] based on digital (0, 8, 50)-net over F49, using
- net from sequence [i] based on digital (0, 49)-sequence over F49 (see above)
- trace code for nets [i] based on digital (0, 8, 50)-net over F49, using
- digital (17, 34, 100)-net over F7, using
- trace code for nets [i] based on digital (0, 17, 50)-net over F49, using
- net from sequence [i] based on digital (0, 49)-sequence over F49 (see above)
- trace code for nets [i] based on digital (0, 17, 50)-net over F49, using
- digital (0, 4, 8)-net over F7, using
(47, 64, 2796)-Net over F7 — Digital
Digital (47, 64, 2796)-net over F7, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(764, 2796, F7, 17) (dual of [2796, 2732, 18]-code), using
- 384 step Varšamov–Edel lengthening with (ri) = (2, 0, 1, 6 times 0, 1, 18 times 0, 1, 46 times 0, 1, 106 times 0, 1, 201 times 0) [i] based on linear OA(757, 2405, F7, 17) (dual of [2405, 2348, 18]-code), using
- construction X applied to Ce(16) ⊂ Ce(15) [i] based on
- linear OA(757, 2401, F7, 17) (dual of [2401, 2344, 18]-code), using an extension Ce(16) of the primitive narrow-sense BCH-code C(I) with length 2400 = 74−1, defining interval I = [1,16], and designed minimum distance d ≥ |I|+1 = 17 [i]
- linear OA(753, 2401, F7, 16) (dual of [2401, 2348, 17]-code), using an extension Ce(15) of the primitive narrow-sense BCH-code C(I) with length 2400 = 74−1, defining interval I = [1,15], and designed minimum distance d ≥ |I|+1 = 16 [i]
- linear OA(70, 4, F7, 0) (dual of [4, 4, 1]-code), using
- discarding factors / shortening the dual code based on linear OA(70, s, F7, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
- construction X applied to Ce(16) ⊂ Ce(15) [i] based on
- 384 step Varšamov–Edel lengthening with (ri) = (2, 0, 1, 6 times 0, 1, 18 times 0, 1, 46 times 0, 1, 106 times 0, 1, 201 times 0) [i] based on linear OA(757, 2405, F7, 17) (dual of [2405, 2348, 18]-code), using
(47, 64, 2835862)-Net in Base 7 — Upper bound on s
There is no (47, 64, 2835863)-net in base 7, because
- 1 times m-reduction [i] would yield (47, 63, 2835863)-net in base 7, but
- the generalized Rao bound for nets shows that 7m ≥ 174251 839661 720117 818388 741641 515328 526932 206673 881937 > 763 [i]