Best Known (29, 29+13, s)-Nets in Base 4
(29, 29+13, 240)-Net over F4 — Constructive and digital
Digital (29, 42, 240)-net over F4, using
- trace code for nets [i] based on digital (1, 14, 80)-net over F64, using
- net from sequence [i] based on digital (1, 79)-sequence over F64, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F64 with g(F) = 1 and N(F) ≥ 80, using
- net from sequence [i] based on digital (1, 79)-sequence over F64, using
(29, 29+13, 276)-Net over F4 — Digital
Digital (29, 42, 276)-net over F4, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(442, 276, F4, 13) (dual of [276, 234, 14]-code), using
- construction XX applied to C1 = C([251,6]), C2 = C([0,8]), C3 = C1 + C2 = C([0,6]), and C∩ = C1 ∩ C2 = C([251,8]) [i] based on
- linear OA(433, 255, F4, 11) (dual of [255, 222, 12]-code), using the primitive BCH-code C(I) with length 255 = 44−1, defining interval I = {−4,−3,…,6}, and designed minimum distance d ≥ |I|+1 = 12 [i]
- linear OA(425, 255, F4, 9) (dual of [255, 230, 10]-code), using the primitive expurgated narrow-sense BCH-code C(I) with length 255 = 44−1, defining interval I = [0,8], and designed minimum distance d ≥ |I|+1 = 10 [i]
- linear OA(437, 255, F4, 13) (dual of [255, 218, 14]-code), using the primitive BCH-code C(I) with length 255 = 44−1, defining interval I = {−4,−3,…,8}, and designed minimum distance d ≥ |I|+1 = 14 [i]
- linear OA(421, 255, F4, 7) (dual of [255, 234, 8]-code), using the primitive expurgated narrow-sense BCH-code C(I) with length 255 = 44−1, defining interval I = [0,6], and designed minimum distance d ≥ |I|+1 = 8 [i]
- linear OA(44, 16, F4, 3) (dual of [16, 12, 4]-code or 16-cap in PG(3,4)), using
- linear OA(41, 5, F4, 1) (dual of [5, 4, 2]-code), using
- discarding factors / shortening the dual code based on linear OA(41, s, F4, 1) (dual of [s, s−1, 2]-code) with arbitrarily large s, using
- construction XX applied to C1 = C([251,6]), C2 = C([0,8]), C3 = C1 + C2 = C([0,6]), and C∩ = C1 ∩ C2 = C([251,8]) [i] based on
(29, 29+13, 12972)-Net in Base 4 — Upper bound on s
There is no (29, 42, 12973)-net in base 4, because
- 1 times m-reduction [i] would yield (29, 41, 12973)-net in base 4, but
- the generalized Rao bound for nets shows that 4m ≥ 4 836610 690795 089579 555100 > 441 [i]