METHOD AND SYSTEM FOR PROVIDING SHORT BLOCK LENGTH LOW DENSITY PARITY CHECK (LDPC) CODES

摘要

An approach is provided for generating Low Density Parity Check (LDPC) codes . An LDPC encoder (203) generates a short LDPC code by shortening longer mother codes. The short LDPC code has an outer Bose Chaudhuri Hocquenghem (BCH) code. Accordin g to another aspect, for an LDPC code with code rate of 3/5 utilizing 8-PSK (Phas e Shift Keying) modulation, an interleaver provides for interleaving bits of the output LDPC code by serially writing data associated with the LDPC code column-wise into a table and reading the data row-wise from right to left. The above approach has particular application i n digital video broadcast services over satellite.