Best Known (221, 242, s)-Nets in Base 3
(221, 242, 838944)-Net over F3 — Constructive and digital
Digital (221, 242, 838944)-net over F3, using
- 32 times duplication [i] based on digital (219, 240, 838944)-net over F3, using
- (u, u+v)-construction [i] based on
- digital (20, 30, 84)-net over F3, using
- trace code for nets [i] based on digital (0, 10, 28)-net over F27, using
- net from sequence [i] based on digital (0, 27)-sequence over F27, using
- generalized Faure sequence [i]
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F27 with g(F) = 0 and N(F) ≥ 28, using
- the rational function field F27(x) [i]
- Niederreiter sequence [i]
- net from sequence [i] based on digital (0, 27)-sequence over F27, using
- trace code for nets [i] based on digital (0, 10, 28)-net over F27, using
- digital (189, 210, 838860)-net over F3, using
- net defined by OOA [i] based on linear OOA(3210, 838860, F3, 21, 21) (dual of [(838860, 21), 17615850, 22]-NRT-code), using
- OOA 10-folding and stacking with additional row [i] based on linear OA(3210, 8388601, F3, 21) (dual of [8388601, 8388391, 22]-code), using
- discarding factors / shortening the dual code based on linear OA(3210, large, F3, 21) (dual of [large, large−210, 22]-code), using
- the primitive narrow-sense BCH-code C(I) with length 14348906 = 315−1, defining interval I = [1,21], and designed minimum distance d ≥ |I|+1 = 22 [i]
- discarding factors / shortening the dual code based on linear OA(3210, large, F3, 21) (dual of [large, large−210, 22]-code), using
- OOA 10-folding and stacking with additional row [i] based on linear OA(3210, 8388601, F3, 21) (dual of [8388601, 8388391, 22]-code), using
- net defined by OOA [i] based on linear OOA(3210, 838860, F3, 21, 21) (dual of [(838860, 21), 17615850, 22]-NRT-code), using
- digital (20, 30, 84)-net over F3, using
- (u, u+v)-construction [i] based on
(221, 242, 4467764)-Net over F3 — Digital
Digital (221, 242, 4467764)-net over F3, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(3242, 4467764, F3, 21) (dual of [4467764, 4467522, 22]-code), using
- discarding factors / shortening the dual code based on linear OA(3242, large, F3, 21) (dual of [large, large−242, 22]-code), using
- 32 times code embedding in larger space [i] based on linear OA(3210, large, F3, 21) (dual of [large, large−210, 22]-code), using
- the primitive narrow-sense BCH-code C(I) with length 14348906 = 315−1, defining interval I = [1,21], and designed minimum distance d ≥ |I|+1 = 22 [i]
- 32 times code embedding in larger space [i] based on linear OA(3210, large, F3, 21) (dual of [large, large−210, 22]-code), using
- discarding factors / shortening the dual code based on linear OA(3242, large, F3, 21) (dual of [large, large−242, 22]-code), using
(221, 242, large)-Net in Base 3 — Upper bound on s
There is no (221, 242, large)-net in base 3, because
- 19 times m-reduction [i] would yield (221, 223, large)-net in base 3, but