CIRCUIT, ENCODER AND METHOD FOR PARALLEL BCH CODING

摘要

The present invention is applicable to the field of code correction and provides a circuit, an encoder and a method for parallel BCH coding. The method comprises: performing an XOR operation on input sequences {m(p-1), m(p-2),..., m(0)} in a current period in sequence corresponding to output high-order positions of the last period of a register separately, outputting operation results as selection signals to a selector, selecting P constant-multinomials {x^r0) mod g(x), (x^r1) mod g(x),..., (x^r(p-1)) mod g(x)} with 0 separately in sequence, shifting the selection results and the output of the last period of the register in P positions towards the high-order positions and outputting the selection results, summing the selection results and outputting the sum to the register to serve as an output of the current period of the register; and operating specific times to obtain final codes to be output. Accordingly, by means of the present invention, the path can be effectively shortened, the time sequence performance of the circuit is enabled to be better and the area is saved.