Information on Result #690879

Linear OA(964, 86, F9, 44) (dual of [86, 22, 45]-code), using construction XX applied to C1 = C([0,83]), C2 = C([1,87]), C3 = C1 + C2 = C([1,83]), and C∩ = C1 ∩ C2 = C([0,87]) based on
  1. linear OA(959, 80, F9, 42) (dual of [80, 21, 43]-code), using contraction [i] based on linear OA(9139, 160, F9, 85) (dual of [160, 21, 86]-code), using the expurgated narrow-sense BCH-code C(I) with length 160 | 94−1, defining interval I = [0,83], and minimum distance d ≥ |{−1,0,…,83}|+1 = 86 (BCH-bound) [i]
  2. linear OA(962, 80, F9, 43) (dual of [80, 18, 44]-code), using contraction [i] based on linear OA(9142, 160, F9, 87) (dual of [160, 18, 88]-code), using the narrow-sense BCH-code C(I) with length 160 | 94−1, defining interval I = [1,87], and designed minimum distance d ≥ |I|+1 = 88 [i]
  3. linear OA(963, 80, F9, 44) (dual of [80, 17, 45]-code), using contraction [i] based on linear OA(9143, 160, F9, 89) (dual of [160, 17, 90]-code), using the expurgated narrow-sense BCH-code C(I) with length 160 | 94−1, defining interval I = [0,87], and minimum distance d ≥ |{−1,0,…,87}|+1 = 90 (BCH-bound) [i]
  4. linear OA(958, 80, F9, 41) (dual of [80, 22, 42]-code), using contraction [i] based on linear OA(9138, 160, F9, 83) (dual of [160, 22, 84]-code), using the narrow-sense BCH-code C(I) with length 160 | 94−1, defining interval I = [1,83], and designed minimum distance d ≥ |I|+1 = 84 [i]
  5. linear OA(90, 1, F9, 0) (dual of [1, 1, 1]-code), using
  6. linear OA(91, 5, F9, 1) (dual of [5, 4, 2]-code), 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.

Compare with Markus Grassl’s online database of code parameters.

Other Results with Identical Parameters

None.

Depending Results

The following results depend on this result:

ResultThis
result
only		Method
1Linear OOA(964, 43, F9, 2, 44) (dual of [(43, 2), 22, 45]-NRT-code) [i]OOA Folding