Best Known (189−38, 189, s)-Nets in Base 2
(189−38, 189, 260)-Net over F2 — Constructive and digital
Digital (151, 189, 260)-net over F2, using
- t-expansion [i] based on digital (150, 189, 260)-net over F2, using
- 3 times m-reduction [i] based on digital (150, 192, 260)-net over F2, using
- trace code for nets [i] based on digital (6, 48, 65)-net over F16, using
- net from sequence [i] based on digital (6, 64)-sequence over F16, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F16 with g(F) = 6 and N(F) ≥ 65, using
- the Hermitian function field over F16 [i]
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F16 with g(F) = 6 and N(F) ≥ 65, using
- net from sequence [i] based on digital (6, 64)-sequence over F16, using
- trace code for nets [i] based on digital (6, 48, 65)-net over F16, using
- 3 times m-reduction [i] based on digital (150, 192, 260)-net over F2, using
(189−38, 189, 516)-Net over F2 — Digital
Digital (151, 189, 516)-net over F2, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(2189, 516, F2, 2, 38) (dual of [(516, 2), 843, 39]-NRT-code), using
- discarding factors / shortening the dual code based on linear OOA(2189, 523, F2, 2, 38) (dual of [(523, 2), 857, 39]-NRT-code), using
- strength reduction [i] based on linear OOA(2189, 523, F2, 2, 39) (dual of [(523, 2), 857, 40]-NRT-code), using
- OOA 2-folding [i] based on linear OA(2189, 1046, F2, 39) (dual of [1046, 857, 40]-code), using
- discarding factors / shortening the dual code based on linear OA(2189, 1047, F2, 39) (dual of [1047, 858, 40]-code), using
- adding a parity check bit [i] based on linear OA(2188, 1046, F2, 38) (dual of [1046, 858, 39]-code), using
- construction XX applied to C1 = C([1021,34]), C2 = C([1,36]), C3 = C1 + C2 = C([1,34]), and C∩ = C1 ∩ C2 = C([1021,36]) [i] based on
- linear OA(2176, 1023, F2, 37) (dual of [1023, 847, 38]-code), using the primitive BCH-code C(I) with length 1023 = 210−1, defining interval I = {−2,−1,…,34}, and designed minimum distance d ≥ |I|+1 = 38 [i]
- linear OA(2175, 1023, F2, 36) (dual of [1023, 848, 37]-code), using the primitive narrow-sense BCH-code C(I) with length 1023 = 210−1, defining interval I = [1,36], and designed minimum distance d ≥ |I|+1 = 37 [i]
- linear OA(2186, 1023, F2, 39) (dual of [1023, 837, 40]-code), using the primitive BCH-code C(I) with length 1023 = 210−1, defining interval I = {−2,−1,…,36}, and designed minimum distance d ≥ |I|+1 = 40 [i]
- linear OA(2165, 1023, F2, 34) (dual of [1023, 858, 35]-code), using the primitive narrow-sense BCH-code C(I) with length 1023 = 210−1, defining interval I = [1,34], and designed minimum distance d ≥ |I|+1 = 35 [i]
- linear OA(21, 12, F2, 1) (dual of [12, 11, 2]-code), using
- discarding factors / shortening the dual code based on linear OA(21, s, F2, 1) (dual of [s, s−1, 2]-code) with arbitrarily large s, using
- linear OA(21, 11, F2, 1) (dual of [11, 10, 2]-code), using
- discarding factors / shortening the dual code based on linear OA(21, s, F2, 1) (dual of [s, s−1, 2]-code) with arbitrarily large s (see above)
- construction XX applied to C1 = C([1021,34]), C2 = C([1,36]), C3 = C1 + C2 = C([1,34]), and C∩ = C1 ∩ C2 = C([1021,36]) [i] based on
- adding a parity check bit [i] based on linear OA(2188, 1046, F2, 38) (dual of [1046, 858, 39]-code), using
- discarding factors / shortening the dual code based on linear OA(2189, 1047, F2, 39) (dual of [1047, 858, 40]-code), using
- OOA 2-folding [i] based on linear OA(2189, 1046, F2, 39) (dual of [1046, 857, 40]-code), using
- strength reduction [i] based on linear OOA(2189, 523, F2, 2, 39) (dual of [(523, 2), 857, 40]-NRT-code), using
- discarding factors / shortening the dual code based on linear OOA(2189, 523, F2, 2, 38) (dual of [(523, 2), 857, 39]-NRT-code), using
(189−38, 189, 7800)-Net in Base 2 — Upper bound on s
There is no (151, 189, 7801)-net in base 2, because
- the generalized Rao bound for nets shows that 2m ≥ 785 736603 400734 013608 438609 372114 061853 444052 620028 774248 > 2189 [i]