Best Known (25, 25+20, s)-Nets in Base 128
(25, 25+20, 1640)-Net over F128 — Constructive and digital
Digital (25, 45, 1640)-net over F128, using
- 1 times m-reduction [i] based on digital (25, 46, 1640)-net over F128, using
- net defined by OOA [i] based on linear OOA(12846, 1640, F128, 21, 21) (dual of [(1640, 21), 34394, 22]-NRT-code), using
- OOA 10-folding and stacking with additional row [i] based on linear OA(12846, 16401, F128, 21) (dual of [16401, 16355, 22]-code), using
- discarding factors / shortening the dual code based on linear OA(12846, 16402, F128, 21) (dual of [16402, 16356, 22]-code), using
- construction X applied to C([0,10]) ⊂ C([0,7]) [i] based on
- linear OA(12841, 16385, F128, 21) (dual of [16385, 16344, 22]-code), using the expurgated narrow-sense BCH-code C(I) with length 16385 | 1284−1, defining interval I = [0,10], and minimum distance d ≥ |{−10,−9,…,10}|+1 = 22 (BCH-bound) [i]
- linear OA(12829, 16385, F128, 15) (dual of [16385, 16356, 16]-code), using the expurgated narrow-sense BCH-code C(I) with length 16385 | 1284−1, defining interval I = [0,7], and minimum distance d ≥ |{−7,−6,…,7}|+1 = 16 (BCH-bound) [i]
- linear OA(1285, 17, F128, 5) (dual of [17, 12, 6]-code or 17-arc in PG(4,128)), using
- discarding factors / shortening the dual code based on linear OA(1285, 128, F128, 5) (dual of [128, 123, 6]-code or 128-arc in PG(4,128)), using
- Reed–Solomon code RS(123,128) [i]
- discarding factors / shortening the dual code based on linear OA(1285, 128, F128, 5) (dual of [128, 123, 6]-code or 128-arc in PG(4,128)), using
- construction X applied to C([0,10]) ⊂ C([0,7]) [i] based on
- discarding factors / shortening the dual code based on linear OA(12846, 16402, F128, 21) (dual of [16402, 16356, 22]-code), using
- OOA 10-folding and stacking with additional row [i] based on linear OA(12846, 16401, F128, 21) (dual of [16401, 16355, 22]-code), using
- net defined by OOA [i] based on linear OOA(12846, 1640, F128, 21, 21) (dual of [(1640, 21), 34394, 22]-NRT-code), using
(25, 25+20, 6553)-Net in Base 128 — Constructive
(25, 45, 6553)-net in base 128, using
- net defined by OOA [i] based on OOA(12845, 6553, S128, 20, 20), using
- OA 10-folding and stacking [i] based on OA(12845, 65530, S128, 20), using
- discarding factors based on OA(12845, 65538, S128, 20), using
- discarding parts of the base [i] based on linear OA(25639, 65538, F256, 20) (dual of [65538, 65499, 21]-code), using
- construction X applied to Ce(19) ⊂ Ce(18) [i] based on
- linear OA(25639, 65536, F256, 20) (dual of [65536, 65497, 21]-code), using an extension Ce(19) of the primitive narrow-sense BCH-code C(I) with length 65535 = 2562−1, defining interval I = [1,19], and designed minimum distance d ≥ |I|+1 = 20 [i]
- linear OA(25637, 65536, F256, 19) (dual of [65536, 65499, 20]-code), using an extension Ce(18) of the primitive narrow-sense BCH-code C(I) with length 65535 = 2562−1, defining interval I = [1,18], and designed minimum distance d ≥ |I|+1 = 19 [i]
- linear OA(2560, 2, F256, 0) (dual of [2, 2, 1]-code), using
- discarding factors / shortening the dual code based on linear OA(2560, s, F256, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
- construction X applied to Ce(19) ⊂ Ce(18) [i] based on
- discarding parts of the base [i] based on linear OA(25639, 65538, F256, 20) (dual of [65538, 65499, 21]-code), using
- discarding factors based on OA(12845, 65538, S128, 20), using
- OA 10-folding and stacking [i] based on OA(12845, 65530, S128, 20), using
(25, 25+20, 8411)-Net over F128 — Digital
Digital (25, 45, 8411)-net over F128, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(12845, 8411, F128, 20) (dual of [8411, 8366, 21]-code), using
- discarding factors / shortening the dual code based on linear OA(12845, 16404, F128, 20) (dual of [16404, 16359, 21]-code), using
- construction X applied to Ce(19) ⊂ Ce(12) [i] based on
- linear OA(12839, 16384, F128, 20) (dual of [16384, 16345, 21]-code), using an extension Ce(19) of the primitive narrow-sense BCH-code C(I) with length 16383 = 1282−1, defining interval I = [1,19], and designed minimum distance d ≥ |I|+1 = 20 [i]
- linear OA(12825, 16384, F128, 13) (dual of [16384, 16359, 14]-code), using an extension Ce(12) of the primitive narrow-sense BCH-code C(I) with length 16383 = 1282−1, defining interval I = [1,12], and designed minimum distance d ≥ |I|+1 = 13 [i]
- linear OA(1286, 20, F128, 6) (dual of [20, 14, 7]-code or 20-arc in PG(5,128)), using
- discarding factors / shortening the dual code based on linear OA(1286, 128, F128, 6) (dual of [128, 122, 7]-code or 128-arc in PG(5,128)), using
- Reed–Solomon code RS(122,128) [i]
- discarding factors / shortening the dual code based on linear OA(1286, 128, F128, 6) (dual of [128, 122, 7]-code or 128-arc in PG(5,128)), using
- construction X applied to Ce(19) ⊂ Ce(12) [i] based on
- discarding factors / shortening the dual code based on linear OA(12845, 16404, F128, 20) (dual of [16404, 16359, 21]-code), using
(25, 25+20, large)-Net in Base 128 — Upper bound on s
There is no (25, 45, large)-net in base 128, because
- 18 times m-reduction [i] would yield (25, 27, large)-net in base 128, but