Feasible calculation of the generator for combined LFSR sequences
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We have a finite number of linear feedback shift registers (LFSR) with known generating polynomials over a commutative ring R. SR (f(x)) denotes the R module of all homogeneous LFSR sequences in R generated by f(x).
To this end we apply tensor products of matrices. We find that the polynomial h(x) is just the minimal polynomial of the tensor product of these companion matrices of fi(x).
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