Best Known (157, 183, s)-Nets in Base 4
(157, 183, 20168)-Net over F4 — Constructive and digital
Digital (157, 183, 20168)-net over F4, using
- 44 times duplication [i] based on digital (153, 179, 20168)-net over F4, using
- net defined by OOA [i] based on linear OOA(4179, 20168, F4, 26, 26) (dual of [(20168, 26), 524189, 27]-NRT-code), using
- OA 13-folding and stacking [i] based on linear OA(4179, 262184, F4, 26) (dual of [262184, 262005, 27]-code), using
- discarding factors / shortening the dual code based on linear OA(4179, 262187, F4, 26) (dual of [262187, 262008, 27]-code), using
- construction X applied to Ce(25) ⊂ Ce(20) [i] based on
- linear OA(4172, 262144, F4, 26) (dual of [262144, 261972, 27]-code), using an extension Ce(25) of the primitive narrow-sense BCH-code C(I) with length 262143 = 49−1, defining interval I = [1,25], and designed minimum distance d ≥ |I|+1 = 26 [i]
- linear OA(4136, 262144, F4, 21) (dual of [262144, 262008, 22]-code), using an extension Ce(20) of the primitive narrow-sense BCH-code C(I) with length 262143 = 49−1, defining interval I = [1,20], and designed minimum distance d ≥ |I|+1 = 21 [i]
- linear OA(47, 43, F4, 4) (dual of [43, 36, 5]-code), using
- construction X applied to Ce(25) ⊂ Ce(20) [i] based on
- discarding factors / shortening the dual code based on linear OA(4179, 262187, F4, 26) (dual of [262187, 262008, 27]-code), using
- OA 13-folding and stacking [i] based on linear OA(4179, 262184, F4, 26) (dual of [262184, 262005, 27]-code), using
- net defined by OOA [i] based on linear OOA(4179, 20168, F4, 26, 26) (dual of [(20168, 26), 524189, 27]-NRT-code), using
(157, 183, 131096)-Net over F4 — Digital
Digital (157, 183, 131096)-net over F4, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(4183, 131096, F4, 2, 26) (dual of [(131096, 2), 262009, 27]-NRT-code), using
- OOA 2-folding [i] based on linear OA(4183, 262192, F4, 26) (dual of [262192, 262009, 27]-code), using
- construction X with Varšamov bound [i] based on
- linear OA(4179, 262187, F4, 26) (dual of [262187, 262008, 27]-code), using
- construction X applied to Ce(25) ⊂ Ce(20) [i] based on
- linear OA(4172, 262144, F4, 26) (dual of [262144, 261972, 27]-code), using an extension Ce(25) of the primitive narrow-sense BCH-code C(I) with length 262143 = 49−1, defining interval I = [1,25], and designed minimum distance d ≥ |I|+1 = 26 [i]
- linear OA(4136, 262144, F4, 21) (dual of [262144, 262008, 22]-code), using an extension Ce(20) of the primitive narrow-sense BCH-code C(I) with length 262143 = 49−1, defining interval I = [1,20], and designed minimum distance d ≥ |I|+1 = 21 [i]
- linear OA(47, 43, F4, 4) (dual of [43, 36, 5]-code), using
- construction X applied to Ce(25) ⊂ Ce(20) [i] based on
- linear OA(4179, 262188, F4, 22) (dual of [262188, 262009, 23]-code), using Gilbert–Varšamov bound and bm = 4179 > Vbs−1(k−1) = 126 386420 590567 319488 563416 867629 380332 842803 554034 935289 136131 014941 399659 198304 045441 815453 097815 818536 [i]
- linear OA(43, 4, F4, 3) (dual of [4, 1, 4]-code or 4-arc in PG(2,4) or 4-cap in PG(2,4)), using
- dual of repetition code with length 4 [i]
- Reed–Solomon code RS(1,4) [i]
- linear OA(4179, 262187, F4, 26) (dual of [262187, 262008, 27]-code), using
- construction X with Varšamov bound [i] based on
- OOA 2-folding [i] based on linear OA(4183, 262192, F4, 26) (dual of [262192, 262009, 27]-code), using
(157, 183, large)-Net in Base 4 — Upper bound on s
There is no (157, 183, large)-net in base 4, because
- 24 times m-reduction [i] would yield (157, 159, large)-net in base 4, but