Information on Result #738146

Linear OA(3188, 195, F3, 123) (dual of [195, 7, 124]-code), using juxtaposition based on
  1. linear OA(376, 83, F3, 51) (dual of [83, 7, 52]-code), using
    • 2 times truncation [i] based on linear OA(378, 85, F3, 53) (dual of [85, 7, 54]-code), using
      • construction XX applied to C1 = C([0,99]), C2 = C([1,105]), C3 = C1 + C2 = C([1,99]), and C∩ = C1 ∩ C2 = C([0,105]) [i] based on
        1. linear OA(374, 80, F3, 50) (dual of [80, 6, 51]-code), using contraction [i] based on linear OA(3154, 160, F3, 101) (dual of [160, 6, 102]-code), using the expurgated narrow-sense BCH-code C(I) with length 160 | 38−1, defining interval I = [0,99], and minimum distance d ≥ |{−1,0,…,99}|+1 = 102 (BCH-bound) [i]
        2. linear OA(375, 80, F3, 52) (dual of [80, 5, 53]-code), using contraction [i] based on linear OA(3155, 160, F3, 105) (dual of [160, 5, 106]-code), using the narrow-sense BCH-code C(I) with length 160 | 38−1, defining interval I = [1,105], and designed minimum distance d ≥ |I|+1 = 106 [i]
        3. linear OA(376, 80, F3, 53) (dual of [80, 4, 54]-code), using contraction [i] based on linear OA(3156, 160, F3, 107) (dual of [160, 4, 108]-code), using the expurgated narrow-sense BCH-code C(I) with length 160 | 38−1, defining interval I = [0,105], and minimum distance d ≥ |{−5,8,21,…,−67}|+1 = 108 (BCH-bound) [i]
        4. linear OA(373, 80, F3, 49) (dual of [80, 7, 50]-code), using contraction [i] based on linear OA(3153, 160, F3, 99) (dual of [160, 7, 100]-code), using the narrow-sense BCH-code C(I) with length 160 | 38−1, defining interval I = [1,99], and designed minimum distance d ≥ |I|+1 = 100 [i]
        5. linear OA(30, 1, F3, 0) (dual of [1, 1, 1]-code), using
        6. linear OA(32, 4, F3, 2) (dual of [4, 2, 3]-code or 4-arc in PG(1,3)), using
  2. linear OA(3105, 112, F3, 71) (dual of [112, 7, 72]-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(3188, 65, F3, 3, 123) (dual of [(65, 3), 7, 124]-NRT-code) [i]OOA Folding
2Linear OOA(3188, 39, F3, 5, 123) (dual of [(39, 5), 7, 124]-NRT-code) [i]