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本文提出了最小码距d_0=4、(2~r-1,2~r-r-2)和(2~r,2~r-r-1)BCH码的码重分布算式及其缩短码的码重分布近似算式。并对IEC TC-57中建议的FT2型码进行了讨论。
In this paper, we propose the code redistribution and the code redistribution of the shortest code distance d_0 = 4, (2 ~ r-1,2 ~ rr-2) and (2 ~ r, 2 ~ rr-1) Approximate formula The FT2 code proposed in IEC TC-57 is also discussed.