Information on Result #1288031
Linear OA(2231, 247, F2, 108) (dual of [247, 16, 109]-code), using construction Y1 based on
- linear OA(2232, 253, F2, 108) (dual of [253, 21, 109]-code), using
- 3 times truncation [i] based on linear OA(2235, 256, F2, 111) (dual of [256, 21, 112]-code), using
- an extension Ce(110) of the primitive narrow-sense BCH-code C(I) with length 255 = 28−1, defining interval I = [1,110], and designed minimum distance d ≥ |I|+1 = 111 [i]
- 3 times truncation [i] based on linear OA(2235, 256, F2, 111) (dual of [256, 21, 112]-code), using
- nonexistence of OA(221, 253, S2, 6), because
- discarding factors would yield OA(221, 233, S2, 6), but
- the Rao or (dual) Hamming bound shows that M ≥ 2 108418 > 221 [i]
- discarding factors would yield OA(221, 233, S2, 6), but
Mode: 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.
Compare with Markus Grassl’s online database of code parameters.
Other Results with Identical Parameters
None.
Depending Results
None.