Best Known (25, 48, s)-Nets in Base 49
(25, 48, 344)-Net over F49 — Constructive and digital
Digital (25, 48, 344)-net over F49, using
- t-expansion [i] based on digital (21, 48, 344)-net over F49, using
- net from sequence [i] based on digital (21, 343)-sequence over F49, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F49 with g(F) = 21 and N(F) ≥ 344, using
- the Hermitian function field over F49 [i]
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F49 with g(F) = 21 and N(F) ≥ 344, using
- net from sequence [i] based on digital (21, 343)-sequence over F49, using
(25, 48, 1206)-Net over F49 — Digital
Digital (25, 48, 1206)-net over F49, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(4948, 1206, F49, 2, 23) (dual of [(1206, 2), 2364, 24]-NRT-code), using
- OOA 2-folding [i] based on linear OA(4948, 2412, F49, 23) (dual of [2412, 2364, 24]-code), using
- discarding factors / shortening the dual code based on linear OA(4948, 2413, F49, 23) (dual of [2413, 2365, 24]-code), using
- construction X applied to C([0,11]) ⊂ C([0,9]) [i] based on
- linear OA(4945, 2402, F49, 23) (dual of [2402, 2357, 24]-code), using the expurgated narrow-sense BCH-code C(I) with length 2402 | 494−1, defining interval I = [0,11], and minimum distance d ≥ |{−11,−10,…,11}|+1 = 24 (BCH-bound) [i]
- linear OA(4937, 2402, F49, 19) (dual of [2402, 2365, 20]-code), using the expurgated narrow-sense BCH-code C(I) with length 2402 | 494−1, defining interval I = [0,9], and minimum distance d ≥ |{−9,−8,…,9}|+1 = 20 (BCH-bound) [i]
- linear OA(493, 11, F49, 3) (dual of [11, 8, 4]-code or 11-arc in PG(2,49) or 11-cap in PG(2,49)), using
- discarding factors / shortening the dual code based on linear OA(493, 49, F49, 3) (dual of [49, 46, 4]-code or 49-arc in PG(2,49) or 49-cap in PG(2,49)), using
- Reed–Solomon code RS(46,49) [i]
- discarding factors / shortening the dual code based on linear OA(493, 49, F49, 3) (dual of [49, 46, 4]-code or 49-arc in PG(2,49) or 49-cap in PG(2,49)), using
- construction X applied to C([0,11]) ⊂ C([0,9]) [i] based on
- discarding factors / shortening the dual code based on linear OA(4948, 2413, F49, 23) (dual of [2413, 2365, 24]-code), using
- OOA 2-folding [i] based on linear OA(4948, 2412, F49, 23) (dual of [2412, 2364, 24]-code), using
(25, 48, 1704191)-Net in Base 49 — Upper bound on s
There is no (25, 48, 1704192)-net in base 49, because
- 1 times m-reduction [i] would yield (25, 47, 1704192)-net in base 49, but
- the generalized Rao bound for nets shows that 49m ≥ 27 492630 582445 232246 831466 550756 208086 370469 919569 240885 111132 046698 772804 767745 > 4947 [i]