Best Known (192, 240, s)-Nets in Base 3
(192, 240, 688)-Net over F3 — Constructive and digital
Digital (192, 240, 688)-net over F3, using
- t-expansion [i] based on digital (190, 240, 688)-net over F3, using
- 4 times m-reduction [i] based on digital (190, 244, 688)-net over F3, using
- trace code for nets [i] based on digital (7, 61, 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, 61, 172)-net over F81, using
- 4 times m-reduction [i] based on digital (190, 244, 688)-net over F3, using
(192, 240, 2533)-Net over F3 — Digital
Digital (192, 240, 2533)-net over F3, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(3240, 2533, F3, 48) (dual of [2533, 2293, 49]-code), using
- 330 step Varšamov–Edel lengthening with (ri) = (3, 1, 0, 1, 0, 0, 1, 4 times 0, 1, 7 times 0, 1, 10 times 0, 1, 15 times 0, 1, 21 times 0, 1, 28 times 0, 1, 35 times 0, 1, 41 times 0, 1, 47 times 0, 1, 51 times 0, 1, 54 times 0) [i] based on linear OA(3224, 2187, F3, 48) (dual of [2187, 1963, 49]-code), using
- 1 times truncation [i] based on linear OA(3225, 2188, F3, 49) (dual of [2188, 1963, 50]-code), using
- the expurgated narrow-sense BCH-code C(I) with length 2188 | 314−1, defining interval I = [0,24], and minimum distance d ≥ |{−24,−23,…,24}|+1 = 50 (BCH-bound) [i]
- 1 times truncation [i] based on linear OA(3225, 2188, F3, 49) (dual of [2188, 1963, 50]-code), using
- 330 step Varšamov–Edel lengthening with (ri) = (3, 1, 0, 1, 0, 0, 1, 4 times 0, 1, 7 times 0, 1, 10 times 0, 1, 15 times 0, 1, 21 times 0, 1, 28 times 0, 1, 35 times 0, 1, 41 times 0, 1, 47 times 0, 1, 51 times 0, 1, 54 times 0) [i] based on linear OA(3224, 2187, F3, 48) (dual of [2187, 1963, 49]-code), using
(192, 240, 289407)-Net in Base 3 — Upper bound on s
There is no (192, 240, 289408)-net in base 3, because
- the generalized Rao bound for nets shows that 3m ≥ 3 229336 387378 027327 099150 998962 959825 234322 968771 546744 509534 399096 908179 606219 440761 512612 389829 404837 659295 629313 > 3240 [i]