| 摘要 |
A bit interleaving method involves applying a bit permutation process to bits of a QC-LDPC codeword made up of N cyclic blocks each including Q bits, and dividing the codeword after the permutation process into a plurality of constellation words each including M bits ( N being not a multiple of M ), the codeword being divided into N' / M sections ( N' =N-X, where X is the remainder of N divided by M ), each of the constellation words being associated with one of the N' / M sections, and the bit permutation process being applied such that each of the constellation words includes one bit from each of M different cyclic blocks in a given section associated with a given constellation word and the Q bits in each of the N' cyclic blocks are each allocated to a bit of an identical bit index in the Q constellation words of a section. The bits of the excluded X cyclic blocks are interleaved independent of the bit permutation process using a different bit permutation rule. |
