Shortening is a standard rate-matching method for polar codes in wireless communications.Since polarization-adjusted convolu⁃tional(PAC)codes also have a block length limited to the integer powers of two,they also req...Shortening is a standard rate-matching method for polar codes in wireless communications.Since polarization-adjusted convolu⁃tional(PAC)codes also have a block length limited to the integer powers of two,they also require rate-matching.To this end,we first analyze the limitations of existing shortening patterns for PAC codes and explore their feasibility.Subsequently,we propose a novel shortening scheme for PAC codes based on list decoding,where the receiver is allowed to treat the values of the deleted bits as undetermined.This ap⁃proach uses a specialized PAC codeword and activates multiple decoding paths during the initialization of list decoding,enabling it to achieve the desired reliability.展开更多
基金supported in part by the National Natural Sciences Foun⁃dation of China(NSFC)under Grant Nos.62301185 and 62027802in part by ZTE Industry⁃University-Institute Cooperation Fundsin part by The Major Key Project of PCL under Grant No.PCL2024A01.
文摘Shortening is a standard rate-matching method for polar codes in wireless communications.Since polarization-adjusted convolu⁃tional(PAC)codes also have a block length limited to the integer powers of two,they also require rate-matching.To this end,we first analyze the limitations of existing shortening patterns for PAC codes and explore their feasibility.Subsequently,we propose a novel shortening scheme for PAC codes based on list decoding,where the receiver is allowed to treat the values of the deleted bits as undetermined.This ap⁃proach uses a specialized PAC codeword and activates multiple decoding paths during the initialization of list decoding,enabling it to achieve the desired reliability.
