Best Known (20, 20+16, s)-Nets in Base 25
(20, 20+16, 156)-Net over F25 — Constructive and digital
Digital (20, 36, 156)-net over F25, using
- (u, u+v)-construction [i] based on
- digital (3, 11, 52)-net over F25, using
- net from sequence [i] based on digital (3, 51)-sequence over F25, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F25 with g(F) = 3 and N(F) ≥ 52, using
- net from sequence [i] based on digital (3, 51)-sequence over F25, using
- digital (9, 25, 104)-net over F25, using
- net from sequence [i] based on digital (9, 103)-sequence over F25, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F25 with g(F) = 9 and N(F) ≥ 104, using
- net from sequence [i] based on digital (9, 103)-sequence over F25, using
- digital (3, 11, 52)-net over F25, using
(20, 20+16, 691)-Net over F25 — Digital
Digital (20, 36, 691)-net over F25, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(2536, 691, F25, 16) (dual of [691, 655, 17]-code), using
- 58 step Varšamov–Edel lengthening with (ri) = (3, 0, 0, 0, 1, 13 times 0, 1, 39 times 0) [i] based on linear OA(2531, 628, F25, 16) (dual of [628, 597, 17]-code), using
- construction XX applied to C1 = C([623,13]), C2 = C([0,14]), C3 = C1 + C2 = C([0,13]), and C∩ = C1 ∩ C2 = C([623,14]) [i] based on
- linear OA(2529, 624, F25, 15) (dual of [624, 595, 16]-code), using the primitive BCH-code C(I) with length 624 = 252−1, defining interval I = {−1,0,…,13}, and designed minimum distance d ≥ |I|+1 = 16 [i]
- linear OA(2529, 624, F25, 15) (dual of [624, 595, 16]-code), using the primitive expurgated narrow-sense BCH-code C(I) with length 624 = 252−1, defining interval I = [0,14], and designed minimum distance d ≥ |I|+1 = 16 [i]
- linear OA(2531, 624, F25, 16) (dual of [624, 593, 17]-code), using the primitive BCH-code C(I) with length 624 = 252−1, defining interval I = {−1,0,…,14}, and designed minimum distance d ≥ |I|+1 = 17 [i]
- linear OA(2527, 624, F25, 14) (dual of [624, 597, 15]-code), using the primitive expurgated narrow-sense BCH-code C(I) with length 624 = 252−1, defining interval I = [0,13], and designed minimum distance d ≥ |I|+1 = 15 [i]
- linear OA(250, 2, F25, 0) (dual of [2, 2, 1]-code), using
- discarding factors / shortening the dual code based on linear OA(250, s, F25, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
- linear OA(250, 2, F25, 0) (dual of [2, 2, 1]-code) (see above)
- construction XX applied to C1 = C([623,13]), C2 = C([0,14]), C3 = C1 + C2 = C([0,13]), and C∩ = C1 ∩ C2 = C([623,14]) [i] based on
- 58 step Varšamov–Edel lengthening with (ri) = (3, 0, 0, 0, 1, 13 times 0, 1, 39 times 0) [i] based on linear OA(2531, 628, F25, 16) (dual of [628, 597, 17]-code), using
(20, 20+16, 306339)-Net in Base 25 — Upper bound on s
There is no (20, 36, 306340)-net in base 25, because
- the generalized Rao bound for nets shows that 25m ≥ 211 759327 839943 683466 543642 128628 936402 070728 442113 > 2536 [i]