RATE MATCHING FOR BLOCK ENCODING USING A REPETITION PATTERN

摘要

The present application concerns rate matching in the context of block codes, in particular Polar codes. A decision regarding whether to use repetition-based rate matching or puncture-based rate matching is made based on a block size of information being encoded. In some aspects, repetition-based rate matching uses a bit-reversal permutation technique. In an embodiment, an (N,K) Polar code is constructed (502). In order to obtain a (M,K) Polar code, a repetition pattern is generated (504), which comprises N zeroes followed by M-N ones. A final repetition pattern is generated by applying a bit-reversal permutation to the repetition pattern (506). Then, M-N code bits of the (N,K) Polar code are obtained using the final repetition pattern (508) and are appended to the (N,K) Polar code to obtain the (M,K) Polar code (510).