Best Known (168−34, 168, s)-Nets in Base 3
(168−34, 168, 688)-Net over F3 — Constructive and digital
Digital (134, 168, 688)-net over F3, using
- t-expansion [i] based on digital (133, 168, 688)-net over F3, using
- trace code for nets [i] based on digital (7, 42, 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, 42, 172)-net over F81, using
(168−34, 168, 1946)-Net over F3 — Digital
Digital (134, 168, 1946)-net over F3, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(3168, 1946, F3, 34) (dual of [1946, 1778, 35]-code), using
- discarding factors / shortening the dual code based on linear OA(3168, 2228, F3, 34) (dual of [2228, 2060, 35]-code), using
- 3 times code embedding in larger space [i] based on linear OA(3165, 2225, F3, 34) (dual of [2225, 2060, 35]-code), using
- construction X applied to Ce(33) ⊂ Ce(27) [i] based on
- linear OA(3155, 2187, F3, 34) (dual of [2187, 2032, 35]-code), using an extension Ce(33) of the primitive narrow-sense BCH-code C(I) with length 2186 = 37−1, defining interval I = [1,33], and designed minimum distance d ≥ |I|+1 = 34 [i]
- linear OA(3127, 2187, F3, 28) (dual of [2187, 2060, 29]-code), using an extension Ce(27) of the primitive narrow-sense BCH-code C(I) with length 2186 = 37−1, defining interval I = [1,27], and designed minimum distance d ≥ |I|+1 = 28 [i]
- linear OA(310, 38, F3, 5) (dual of [38, 28, 6]-code), using
- discarding factors / shortening the dual code based on linear OA(310, 39, F3, 5) (dual of [39, 29, 6]-code), using
- construction X applied to Ce(33) ⊂ Ce(27) [i] based on
- 3 times code embedding in larger space [i] based on linear OA(3165, 2225, F3, 34) (dual of [2225, 2060, 35]-code), using
- discarding factors / shortening the dual code based on linear OA(3168, 2228, F3, 34) (dual of [2228, 2060, 35]-code), using
(168−34, 168, 186190)-Net in Base 3 — Upper bound on s
There is no (134, 168, 186191)-net in base 3, because
- the generalized Rao bound for nets shows that 3m ≥ 143 348537 328064 693472 479387 895247 706373 223334 714618 219806 706110 265131 739508 223615 > 3168 [i]