Best Known (154, 154+20, s)-Nets in Base 4
(154, 154+20, 419435)-Net over F4 — Constructive and digital
Digital (154, 174, 419435)-net over F4, using
- net defined by OOA [i] based on linear OOA(4174, 419435, F4, 20, 20) (dual of [(419435, 20), 8388526, 21]-NRT-code), using
- OA 10-folding and stacking [i] based on linear OA(4174, 4194350, F4, 20) (dual of [4194350, 4194176, 21]-code), using
- discarding factors / shortening the dual code based on linear OA(4174, 4194356, F4, 20) (dual of [4194356, 4194182, 21]-code), using
- construction X applied to Ce(20) ⊂ Ce(14) [i] based on
- linear OA(4166, 4194304, F4, 21) (dual of [4194304, 4194138, 22]-code), using an extension Ce(20) of the primitive narrow-sense BCH-code C(I) with length 4194303 = 411−1, defining interval I = [1,20], and designed minimum distance d ≥ |I|+1 = 21 [i]
- linear OA(4122, 4194304, F4, 15) (dual of [4194304, 4194182, 16]-code), using an extension Ce(14) of the primitive narrow-sense BCH-code C(I) with length 4194303 = 411−1, defining interval I = [1,14], and designed minimum distance d ≥ |I|+1 = 15 [i]
- linear OA(48, 52, F4, 4) (dual of [52, 44, 5]-code), using
- discarding factors / shortening the dual code based on linear OA(48, 85, F4, 4) (dual of [85, 77, 5]-code), using
- construction X applied to Ce(20) ⊂ Ce(14) [i] based on
- discarding factors / shortening the dual code based on linear OA(4174, 4194356, F4, 20) (dual of [4194356, 4194182, 21]-code), using
- OA 10-folding and stacking [i] based on linear OA(4174, 4194350, F4, 20) (dual of [4194350, 4194176, 21]-code), using
(154, 154+20, 2097178)-Net over F4 — Digital
Digital (154, 174, 2097178)-net over F4, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(4174, 2097178, F4, 2, 20) (dual of [(2097178, 2), 4194182, 21]-NRT-code), using
- OOA 2-folding [i] based on linear OA(4174, 4194356, F4, 20) (dual of [4194356, 4194182, 21]-code), using
- construction X applied to Ce(20) ⊂ Ce(14) [i] based on
- linear OA(4166, 4194304, F4, 21) (dual of [4194304, 4194138, 22]-code), using an extension Ce(20) of the primitive narrow-sense BCH-code C(I) with length 4194303 = 411−1, defining interval I = [1,20], and designed minimum distance d ≥ |I|+1 = 21 [i]
- linear OA(4122, 4194304, F4, 15) (dual of [4194304, 4194182, 16]-code), using an extension Ce(14) of the primitive narrow-sense BCH-code C(I) with length 4194303 = 411−1, defining interval I = [1,14], and designed minimum distance d ≥ |I|+1 = 15 [i]
- linear OA(48, 52, F4, 4) (dual of [52, 44, 5]-code), using
- discarding factors / shortening the dual code based on linear OA(48, 85, F4, 4) (dual of [85, 77, 5]-code), using
- construction X applied to Ce(20) ⊂ Ce(14) [i] based on
- OOA 2-folding [i] based on linear OA(4174, 4194356, F4, 20) (dual of [4194356, 4194182, 21]-code), using
(154, 154+20, large)-Net in Base 4 — Upper bound on s
There is no (154, 174, large)-net in base 4, because
- 18 times m-reduction [i] would yield (154, 156, large)-net in base 4, but