MinT - Best Known (153, 195, s)-Nets in Base 4

Best Known (153, 195, s)-Nets in Base 4

(153, 195, 1052)-Net over F₄ — Constructive and digital

Digital (153, 195, 1052)-net over F₄, using

1 times m-reduction [i] based on digital (153, 196, 1052)-net over F₄, using
- trace code for nets [i] based on digital (6, 49, 263)-net over F₂₅₆, using
  - net from sequence [i] based on digital (6, 262)-sequence over F₂₅₆, using
    - Niederreiter sequence [i]

(153, 195, 4186)-Net over F₄ — Digital

Digital (153, 195, 4186)-net over F₄, using

embedding of OOA with Gilbertâ€“VarÅ¡amov bound [i] based on linear OA(4¹⁹⁵, 4186, F₄, 42) (dual of [4186, 3991, 43]-code), using
- 76 step VarÅ¡amovâ€“Edel lengthening with (r_i)Â = (3, 1, 0, 0, 1, 5 times 0, 1, 11 times 0, 1, 19 times 0, 1, 33 times 0) [i] based on linear OA(4¹⁸⁷, 4102, F₄, 42) (dual of [4102, 3915, 43]-code), using
  - constructionÂ X applied to C_e(41) âŠ‚ C_e(40) [i] based on
    1. linear OA(4¹⁸⁷, 4096, F₄, 42) (dual of [4096, 3909, 43]-code), using an extension C_e(41) of the primitive narrow-sense BCH-code C(I) with length 4095Â = 4⁶âˆ’1, defining interval IÂ =Â [1,41], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 42 [i]
    2. linear OA(4¹⁸¹, 4096, F₄, 41) (dual of [4096, 3915, 42]-code), using an extension C_e(40) of the primitive narrow-sense BCH-code C(I) with length 4095Â = 4⁶âˆ’1, defining interval IÂ =Â [1,40], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 41 [i]
    3. linear OA(4⁰, 6, F₄, 0) (dual of [6, 6, 1]-code), using
      - discarding factors / shortening the dual code based on linear OA(4⁰, s, F₄, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
        OA with only one run / dual of code without redundancy [i]

(153, 195, 1126994)-Net in Base 4 — Upper bound on s

There is no (153, 195, 1126995)-net in base 4, because

the generalized Rao bound for nets shows that 4^mÂ â‰¥ 2521 748565 642267 294176 829578 835588 971308 023955 538551 020007 493807 575669 487363 750271 553771 978568 569465 780841 624147 012704 > 4¹⁹⁵ [i]