Information on Result #673623
Linear OA(270, 261, F2, 19) (dual of [261, 191, 20]-code), using construction X applied to Ce(18) ⊂ Ce(16) based on
- linear OA(269, 256, F2, 19) (dual of [256, 187, 20]-code), using an extension Ce(18) of the primitive narrow-sense BCH-code C(I) with length 255 = 28−1, defining interval I = [1,18], and designed minimum distance d ≥ |I|+1 = 19 [i]
- linear OA(265, 256, F2, 17) (dual of [256, 191, 18]-code), using an extension Ce(16) of the primitive narrow-sense BCH-code C(I) with length 255 = 28−1, defining interval I = [1,16], and designed minimum distance d ≥ |I|+1 = 17 [i]
- linear OA(21, 5, F2, 1) (dual of [5, 4, 2]-code), using
- discarding factors / shortening the dual code based on linear OA(21, s, F2, 1) (dual of [s, s−1, 2]-code) for arbitrarily large s, using
Mode: Constructive and linear.
Optimality
Show details for fixed k and m, n and k, k and s, k and t, n and m, m and s, m and t, n and s, n and t.
Other Results with Identical Parameters
None.
Depending Results
The following results depend on this result:
| Result | This result only | Method | ||
|---|---|---|---|---|
| 1 | Linear OA(270, 261, F2, 18) (dual of [261, 191, 19]-code) | [i] | Strength Reduction | |
| 2 | Linear OA(271, 262, F2, 19) (dual of [262, 191, 20]-code) | [i] | Code Embedding in Larger Space | |
| 3 | Linear OA(269, 260, F2, 18) (dual of [260, 191, 19]-code) | [i] | Truncation | |
| 4 | Linear OOA(270, 130, F2, 2, 19) (dual of [(130, 2), 190, 20]-NRT-code) | [i] | OOA Folding | |
| 5 | Linear OOA(270, 87, F2, 3, 19) (dual of [(87, 3), 191, 20]-NRT-code) | [i] | ||
| 6 | Linear OOA(270, 65, F2, 4, 19) (dual of [(65, 4), 190, 20]-NRT-code) | [i] | ||
| 7 | Linear OOA(270, 52, F2, 5, 19) (dual of [(52, 5), 190, 20]-NRT-code) | [i] | ||
| 8 | Linear OOA(270, 43, F2, 6, 19) (dual of [(43, 6), 188, 20]-NRT-code) | [i] | ||