Polynomial operator in galois fields and a digital signal processor comprising an operator of this type

摘要

The polynomial operator in the Galois field of the invention is organized at three levels:PPa multiplexer level to select and transmit the operands to be used for the successive stage of the calculation to a second level;PPa so-called pipeline level comprising 3 flip-flop registers to memorize the operands selected at the first level;PPa third level for calculation, comprising a multiplier-adder which has its inputs X, Y and Z connected to the outputs of the registers, and which gives the coefficients of the resultant polynomials in the Galois field while always performing the same calculation by repetition of the same control instruction. This operator can be applied to digital telecommunications for the encoding and decoding of BCH or RS (REED SOLOMON) error-correcting codes, and can be used to make an integrated processor capable of processing digital data in the form of octets.