Best Known (49, 49+20, s)-Nets in Base 8
(49, 49+20, 410)-Net over F8 — Constructive and digital
Digital (49, 69, 410)-net over F8, using
- net defined by OOA [i] based on linear OOA(869, 410, F8, 20, 20) (dual of [(410, 20), 8131, 21]-NRT-code), using
- OA 10-folding and stacking [i] based on linear OA(869, 4100, F8, 20) (dual of [4100, 4031, 21]-code), using
- construction X applied to Ce(19) ⊂ Ce(18) [i] based on
- linear OA(869, 4096, F8, 20) (dual of [4096, 4027, 21]-code), using an extension Ce(19) of the primitive narrow-sense BCH-code C(I) with length 4095 = 84−1, defining interval I = [1,19], and designed minimum distance d ≥ |I|+1 = 20 [i]
- linear OA(865, 4096, F8, 19) (dual of [4096, 4031, 20]-code), using an extension Ce(18) of the primitive narrow-sense BCH-code C(I) with length 4095 = 84−1, defining interval I = [1,18], and designed minimum distance d ≥ |I|+1 = 19 [i]
- linear OA(80, 4, F8, 0) (dual of [4, 4, 1]-code), using
- discarding factors / shortening the dual code based on linear OA(80, s, F8, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
- construction X applied to Ce(19) ⊂ Ce(18) [i] based on
- OA 10-folding and stacking [i] based on linear OA(869, 4100, F8, 20) (dual of [4100, 4031, 21]-code), using
(49, 49+20, 576)-Net in Base 8 — Constructive
(49, 69, 576)-net in base 8, using
- 1 times m-reduction [i] based on (49, 70, 576)-net in base 8, using
- trace code for nets [i] based on (14, 35, 288)-net in base 64, using
- base change [i] based on digital (9, 30, 288)-net over F128, using
- net from sequence [i] based on digital (9, 287)-sequence over F128, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F128 with g(F) = 9 and N(F) ≥ 288, using
- net from sequence [i] based on digital (9, 287)-sequence over F128, using
- base change [i] based on digital (9, 30, 288)-net over F128, using
- trace code for nets [i] based on (14, 35, 288)-net in base 64, using
(49, 49+20, 2774)-Net over F8 — Digital
Digital (49, 69, 2774)-net over F8, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(869, 2774, F8, 20) (dual of [2774, 2705, 21]-code), using
- discarding factors / shortening the dual code based on linear OA(869, 4096, F8, 20) (dual of [4096, 4027, 21]-code), using
- an extension Ce(19) of the primitive narrow-sense BCH-code C(I) with length 4095 = 84−1, defining interval I = [1,19], and designed minimum distance d ≥ |I|+1 = 20 [i]
- discarding factors / shortening the dual code based on linear OA(869, 4096, F8, 20) (dual of [4096, 4027, 21]-code), using
(49, 49+20, 1102038)-Net in Base 8 — Upper bound on s
There is no (49, 69, 1102039)-net in base 8, because
- the generalized Rao bound for nets shows that 8m ≥ 205 688670 357239 250264 853657 467715 444955 663019 258367 987920 156862 > 869 [i]