Apparatus and method of early decoding in communication systems

摘要

A method and apparatus are disclosed for forming a frame of interleaved information bits in a communication system, where the decoding of the frame of interleaved information bits may begin before all of the bits in the frame are received. An exemplary interleaved frame is formed by receiving a frame of N information bits within the communication system; encoding the information bits at a code rate R to provide encoded bits; and arranging the encoded bits into a frame of N/R coded bits, wherein a plurality of puncturing patterns pi are applied to the frame of N/R coded bits such that a code rate of R/ai is produced for each of the plurality of puncturing pattern pi. The arrangement of encoded bits involves applying a puncturing pattern pj to the encoded bits; and applying a permutation function to the punctured encoded bits to generate a fractional section of the frame of N/R coded bits. The fractional section of the frame of N/R coded bits comprises N/R*aj bits.