Best Known (81, 81+21, s)-Nets in Base 16
(81, 81+21, 104860)-Net over F16 — Constructive and digital
Digital (81, 102, 104860)-net over F16, using
- 161 times duplication [i] based on digital (80, 101, 104860)-net over F16, using
- net defined by OOA [i] based on linear OOA(16101, 104860, F16, 21, 21) (dual of [(104860, 21), 2201959, 22]-NRT-code), using
- OOA 10-folding and stacking with additional row [i] based on linear OA(16101, 1048601, F16, 21) (dual of [1048601, 1048500, 22]-code), using
- 1 times code embedding in larger space [i] based on linear OA(16100, 1048600, F16, 21) (dual of [1048600, 1048500, 22]-code), using
- construction X applied to Ce(20) ⊂ Ce(16) [i] based on
- linear OA(1696, 1048576, F16, 21) (dual of [1048576, 1048480, 22]-code), using an extension Ce(20) of the primitive narrow-sense BCH-code C(I) with length 1048575 = 165−1, defining interval I = [1,20], and designed minimum distance d ≥ |I|+1 = 21 [i]
- linear OA(1676, 1048576, F16, 17) (dual of [1048576, 1048500, 18]-code), using an extension Ce(16) of the primitive narrow-sense BCH-code C(I) with length 1048575 = 165−1, defining interval I = [1,16], and designed minimum distance d ≥ |I|+1 = 17 [i]
- linear OA(164, 24, F16, 3) (dual of [24, 20, 4]-code or 24-cap in PG(3,16)), using
- construction X applied to Ce(20) ⊂ Ce(16) [i] based on
- 1 times code embedding in larger space [i] based on linear OA(16100, 1048600, F16, 21) (dual of [1048600, 1048500, 22]-code), using
- OOA 10-folding and stacking with additional row [i] based on linear OA(16101, 1048601, F16, 21) (dual of [1048601, 1048500, 22]-code), using
- net defined by OOA [i] based on linear OOA(16101, 104860, F16, 21, 21) (dual of [(104860, 21), 2201959, 22]-NRT-code), using
(81, 81+21, 1048604)-Net over F16 — Digital
Digital (81, 102, 1048604)-net over F16, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(16102, 1048604, F16, 21) (dual of [1048604, 1048502, 22]-code), using
- construction X with Varšamov bound [i] based on
- linear OA(16100, 1048600, F16, 21) (dual of [1048600, 1048500, 22]-code), using
- construction X applied to Ce(20) ⊂ Ce(16) [i] based on
- linear OA(1696, 1048576, F16, 21) (dual of [1048576, 1048480, 22]-code), using an extension Ce(20) of the primitive narrow-sense BCH-code C(I) with length 1048575 = 165−1, defining interval I = [1,20], and designed minimum distance d ≥ |I|+1 = 21 [i]
- linear OA(1676, 1048576, F16, 17) (dual of [1048576, 1048500, 18]-code), using an extension Ce(16) of the primitive narrow-sense BCH-code C(I) with length 1048575 = 165−1, defining interval I = [1,16], and designed minimum distance d ≥ |I|+1 = 17 [i]
- linear OA(164, 24, F16, 3) (dual of [24, 20, 4]-code or 24-cap in PG(3,16)), using
- construction X applied to Ce(20) ⊂ Ce(16) [i] based on
- linear OA(16100, 1048602, F16, 20) (dual of [1048602, 1048502, 21]-code), using Gilbert–Varšamov bound and bm = 16100 > Vbs−1(k−1) = 448914 967891 557595 473389 475834 598982 992684 900212 753435 743761 060143 626871 987946 968598 149711 009552 035934 859474 550012 859016 [i]
- linear OA(160, 2, F16, 0) (dual of [2, 2, 1]-code), using
- discarding factors / shortening the dual code based on linear OA(160, s, F16, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
- linear OA(16100, 1048600, F16, 21) (dual of [1048600, 1048500, 22]-code), using
- construction X with Varšamov bound [i] based on
(81, 81+21, large)-Net in Base 16 — Upper bound on s
There is no (81, 102, large)-net in base 16, because
- 19 times m-reduction [i] would yield (81, 83, large)-net in base 16, but