Information on Result #629357
Linear OA(2139, 147, F2, 67) (dual of [147, 8, 68]-code), using concatenation of two codes based on
- linear OA(445, 49, F4, 33) (dual of [49, 4, 34]-code), using
- discarding factors / shortening the dual code based on linear OA(445, 51, F4, 33) (dual of [51, 6, 34]-code), using
- 2 times truncation [i] based on linear OA(447, 53, F4, 35) (dual of [53, 6, 36]-code), using
- construction XX applied to C1 = C([0,101]), C2 = C([1,104]), C3 = C1 + C2 = C([1,101]), and C∩ = C1 ∩ C2 = C([0,104]) [i] based on
- linear OA(446, 51, F4, 34) (dual of [51, 5, 35]-code), using contraction [i] based on linear OA(4148, 153, F4, 104) (dual of [153, 5, 105]-code), using the expurgated narrow-sense BCH-code C(I) with length 153 | 412−1, defining interval I = [0,101], and minimum distance d ≥ |{−2,−1,…,101}|+1 = 105 (BCH-bound) [i]
- linear OA(446, 51, F4, 34) (dual of [51, 5, 35]-code), using contraction [i] based on linear OA(4148, 153, F4, 104) (dual of [153, 5, 105]-code), using the narrow-sense BCH-code C(I) with length 153 | 412−1, defining interval I = [1,104], and designed minimum distance d ≥ |I|+1 = 105 [i]
- linear OA(447, 51, F4, 35) (dual of [51, 4, 36]-code), using contraction [i] based on linear OA(4149, 153, F4, 107) (dual of [153, 4, 108]-code), using the expurgated narrow-sense BCH-code C(I) with length 153 | 412−1, defining interval I = [0,104], and minimum distance d ≥ |{−2,−1,…,104}|+1 = 108 (BCH-bound) [i]
- linear OA(445, 51, F4, 33) (dual of [51, 6, 34]-code), using contraction [i] based on linear OA(4147, 153, F4, 101) (dual of [153, 6, 102]-code), using the narrow-sense BCH-code C(I) with length 153 | 412−1, defining interval I = [1,101], and designed minimum distance d ≥ |I|+1 = 102 [i]
- linear OA(40, 1, F4, 0) (dual of [1, 1, 1]-code), using
- dual of repetition code with length 1 [i]
- linear OA(40, 1, F4, 0) (dual of [1, 1, 1]-code) (see above)
- construction XX applied to C1 = C([0,101]), C2 = C([1,104]), C3 = C1 + C2 = C([1,101]), and C∩ = C1 ∩ C2 = C([0,104]) [i] based on
- 2 times truncation [i] based on linear OA(447, 53, F4, 35) (dual of [53, 6, 36]-code), using
- discarding factors / shortening the dual code based on linear OA(445, 51, F4, 33) (dual of [51, 6, 34]-code), using
- linear OA(21, 3, F2, 1) (dual of [3, 2, 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.
Compare with Markus Grassl’s online database of code parameters.
Other Results with Identical Parameters
None.
Depending Results
None.