DEVICE AND METHOD FOR ENCODING/DECODING A CHANNEL WITH USAGE OF PARALLEL CASCADE EVEN PARITY CHECK CODE WITH LOW DENSITY

FIELD: device and method for encoding/decoding a channel with usage of parallel cascade even parity check code with low density (LDPC). ^ SUBSTANCE: in the encoding device, first LDPC encoder generates first LDPC component code in accordance with received information bits, interleaving device interleaves information bits in accordance with given interleaving rule, second LDPC encoder generates second LDPC component code in accordance with interleaved information bits, controller executes control operation in such a way, that information bits, first LDPC component code, which represents first even parity check bits, matching information bits, and second LDPC component code, which represents second even parity check bits, matching information bits, are all combined according to given code speed. ^ EFFECT: improved working characteristics of parallel cascade code LDPC and maintained alternating code speed. ^ 4 cl, 8 dwg