Devices for product polar-code encoding and decoding

The disclosure relates to the field of channel coding with polar codes, in particular, relates to product polar-code encoding and decoding. The disclosure presents, accordingly, a device for product polar-code decoding, a device for product polar-code encoding, and corresponding methods. The polar-code decoding includes determining a first matrix by scrambling a received codeword matrix using a scrambler, and polar-decoding one or more columns of the first matrix using a column-decoder. The polar-code encoding comprises obtaining scrambling information indicative of one or more scrambling instructions available at the polar-code decoding, determining an input matrix comprising a frozen set of bits, wherein an arrangement of the frozen set of bits in the input matrix is determined based on the scrambling information, and polar-encoding the input matrix based on a product polar-code to obtain the codeword matrix.