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当x2+x+1不是g(x)的因子,g(x)和(x2+x+1)g(x)分别是二元线性循环码c(x)和Csub(x)的生成多项式时,则Csub(x)是c(x)的子码.恰当选用c(x)/Csub(x)的4个余式c(x)转换为子码,然后对子码捕错.当错误矢量E(x)的重量W[E(x)]≤t,且有连续k位为零时,就能正确译码.
When x2 + x + 1 is not a factor of g (x) and g (x) and (x2 + x + 1) are the generator polynomials of binary linear cyclic codes c (x) and Csub (X) subcode. Proper use of c (x) / Csub (x) of the four remainder c (x) is converted to a sub-code, and then sub-code error. When the weight of the error vector E (x) W [E (x)] ≤ t, and there are continuous k bits to zero, correct decoding is possible.