Best Known (189−36, 189, s)-Nets in Base 3
(189−36, 189, 688)-Net over F3 — Constructive and digital
Digital (153, 189, 688)-net over F3, using
- t-expansion [i] based on digital (151, 189, 688)-net over F3, using
- 3 times m-reduction [i] based on digital (151, 192, 688)-net over F3, using
- trace code for nets [i] based on digital (7, 48, 172)-net over F81, using
- net from sequence [i] based on digital (7, 171)-sequence over F81, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F81 with g(F) = 7 and N(F) ≥ 172, using
- net from sequence [i] based on digital (7, 171)-sequence over F81, using
- trace code for nets [i] based on digital (7, 48, 172)-net over F81, using
- 3 times m-reduction [i] based on digital (151, 192, 688)-net over F3, using
(189−36, 189, 2648)-Net over F3 — Digital
Digital (153, 189, 2648)-net over F3, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(3189, 2648, F3, 36) (dual of [2648, 2459, 37]-code), using
- 440 step Varšamov–Edel lengthening with (ri) = (4, 1, 1, 1, 0, 1, 0, 0, 0, 1, 4 times 0, 1, 6 times 0, 1, 9 times 0, 1, 12 times 0, 1, 16 times 0, 1, 21 times 0, 1, 27 times 0, 1, 34 times 0, 1, 42 times 0, 1, 51 times 0, 1, 58 times 0, 1, 66 times 0, 1, 72 times 0) [i] based on linear OA(3168, 2187, F3, 36) (dual of [2187, 2019, 37]-code), using
- 1 times truncation [i] based on linear OA(3169, 2188, F3, 37) (dual of [2188, 2019, 38]-code), using
- the expurgated narrow-sense BCH-code C(I) with length 2188 | 314−1, defining interval I = [0,18], and minimum distance d ≥ |{−18,−17,…,18}|+1 = 38 (BCH-bound) [i]
- 1 times truncation [i] based on linear OA(3169, 2188, F3, 37) (dual of [2188, 2019, 38]-code), using
- 440 step Varšamov–Edel lengthening with (ri) = (4, 1, 1, 1, 0, 1, 0, 0, 0, 1, 4 times 0, 1, 6 times 0, 1, 9 times 0, 1, 12 times 0, 1, 16 times 0, 1, 21 times 0, 1, 27 times 0, 1, 34 times 0, 1, 42 times 0, 1, 51 times 0, 1, 58 times 0, 1, 66 times 0, 1, 72 times 0) [i] based on linear OA(3168, 2187, F3, 36) (dual of [2187, 2019, 37]-code), using
(189−36, 189, 386236)-Net in Base 3 — Upper bound on s
There is no (153, 189, 386237)-net in base 3, because
- the generalized Rao bound for nets shows that 3m ≥ 1 499418 391808 781875 884256 233415 770114 841477 052848 128031 590659 717111 806500 491933 607928 281281 > 3189 [i]