COMMUNICATION UNIT AND METHOD OF ENCODING/DECODING DATA THEREIN

摘要

A method (400) for coding one or more data blocks in a communication unit comprises the step of performing an intra row permutation operation in an algebraic interleaver (215, 320, 345) or de-interleaver (335, 350). A permutation is performed on a matrix comprising bits or symbols of said one or more data blocks arranged in a number of rows and a number of columns. The method further comprises the step of calculating (420) an index value (m) of a sequence s(m) based on a sequence of values (g(i)) by iteratively performing a number of modulo addition operations for intra-row permutation. Advantageously, by performing intra row calculations using modulo arithmetic in an algebraic interleaver, a reduction of computational complexity in an interleaving operation is achieved.