Best Known (87, 87+27, s)-Nets in Base 5
(87, 87+27, 408)-Net over F5 — Constructive and digital
Digital (87, 114, 408)-net over F5, using
- trace code for nets [i] based on digital (30, 57, 204)-net over F25, using
- net from sequence [i] based on digital (30, 203)-sequence over F25, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F25 with g(F) = 30 and N(F) ≥ 204, using
- net from sequence [i] based on digital (30, 203)-sequence over F25, using
(87, 87+27, 3277)-Net over F5 — Digital
Digital (87, 114, 3277)-net over F5, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(5114, 3277, F5, 27) (dual of [3277, 3163, 28]-code), using
- 139 step Varšamov–Edel lengthening with (ri) = (3, 0, 1, 0, 0, 0, 1, 8 times 0, 1, 18 times 0, 1, 37 times 0, 1, 66 times 0) [i] based on linear OA(5106, 3130, F5, 27) (dual of [3130, 3024, 28]-code), using
- construction X applied to Ce(26) ⊂ Ce(25) [i] based on
- linear OA(5106, 3125, F5, 27) (dual of [3125, 3019, 28]-code), using an extension Ce(26) of the primitive narrow-sense BCH-code C(I) with length 3124 = 55−1, defining interval I = [1,26], and designed minimum distance d ≥ |I|+1 = 27 [i]
- linear OA(5101, 3125, F5, 26) (dual of [3125, 3024, 27]-code), using an extension Ce(25) of the primitive narrow-sense BCH-code C(I) with length 3124 = 55−1, defining interval I = [1,25], and designed minimum distance d ≥ |I|+1 = 26 [i]
- linear OA(50, 5, F5, 0) (dual of [5, 5, 1]-code), using
- discarding factors / shortening the dual code based on linear OA(50, s, F5, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
- construction X applied to Ce(26) ⊂ Ce(25) [i] based on
- 139 step Varšamov–Edel lengthening with (ri) = (3, 0, 1, 0, 0, 0, 1, 8 times 0, 1, 18 times 0, 1, 37 times 0, 1, 66 times 0) [i] based on linear OA(5106, 3130, F5, 27) (dual of [3130, 3024, 28]-code), using
(87, 87+27, 1686576)-Net in Base 5 — Upper bound on s
There is no (87, 114, 1686577)-net in base 5, because
- 1 times m-reduction [i] would yield (87, 113, 1686577)-net in base 5, but
- the generalized Rao bound for nets shows that 5m ≥ 9 629656 394817 083532 497376 312639 328287 027918 582437 421093 779925 805299 461180 042325 > 5113 [i]