LOW LATENCY SEQUENTIAL LIST DECODING OF POLAR CODES

摘要

There is provided a method of recursive sequential list decoding of a codeword of a polar code comprising: obtaining an ordered sequence of constituent codes usable for the sequential decoding of the polar code, representable by a layered graph; generating a first candidate codeword (CCW) of a first constituent code, the first CCW being computed from an input model informative of a CCW of a second constituent code, the first constituent code and second constituent code being children of a third constituent code; using the first CCW and the second CCW to compute, by the decoder, a CCW of the third constituent code; using the CCW of the third constituent code to compute a group of symbol likelihoods indicating probabilities of symbols of a fourth (higher-layer) constituent code having been transmitted with a particular symbol value, and using the group of symbol likelihoods to decode the fourth constituent code.