Mediatek Corporation

Tien-Yu Lin

Chia-Wei Tai

Wei-De Wu

Mao-Ching Chiu

Tun-Ping Huang

Tao Chen

Shao-Ping Hung

Wei-Yeu Chen

Tien-Shin Ho

Examples pertaining to re-transmission cyclic redundancy check (CRC) for polar coding incremental-redundancy hybrid automatic repeat request (IR-HARQ) are described. An apparatus (e.g., UE) encodes a plurality of information bits using a polar code to generate a polar code block (CB). The apparatus performs one or more transmissions of the polar CB using hybrid automatic repeat request (HARQ) by performing an initial transmission of the polar CB and performing a re-transmission of the polar CB with a re-transmission cyclic redundancy check (ReTX CRC).

Re-transmission CRC for polar coding incremental-redundancy HARQ

Examples pertaining to additional bit freezing for polar coding are described. An apparatus performs polar coding to encode a plurality of input subblocks of information bits, frozen bits and optional cyclic redundancy check (CRC) bits to generate a plurality of subblocks of coded bits. The apparatus then transmits at least some of the subblocks of coded bits. In performing the polar coding, the apparatus additionally freezes one of the plurality of input subblocks corresponding to one of the interleaved plurality of subblocks of coded bits which decreases polarization gain due to puncturing.

Additional bit freezing for polar coding

Examples pertaining to bit selection for polar coding incremental-redundancy hybrid automatic repeat request (IR-HARQ) are described. An apparatus (e.g., UE) generates a re-transmission polar code block (CB) in a polar incremental redundancy HARQ (IR-HARQ) procedure. The apparatus then transmits the re-transmission polar CB as a re-transmission of an initial transmission of an initial polar code carrying a plurality of information bits. In generating the re-transmission polar CB, the apparatus selects one or more re-transmission information bits from the plurality of information bits.

Bit selection for polar coding incremental-redundancy HARQ

A method for performing polar decoding with aid of notation transformation and associated polar decoder are provided. The method includes: transforming input signals from a 2's complement notation to a signed magnitude notation to generate transformed input signals, wherein during the polar decoding, a plurality of first sub-operations and a plurality of second sub-operations are performed to generate decoding results of the transformed input signals; performing a first sign processing to generate a sign result of a first sub-operation within the plurality of first sub-operations; performing a first magnitude processing to generate a magnitude result of the first sub-operation within the plurality of first sub-operations; performing a second sign processing to generate a sign result of a second sub-operation within the plurality of second sub-operations; and performing a second magnitude processing to generate a magnitude result of the second sub-operation within the plurality of second sub-operations.

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Hsinchu, Taiwan

Tien-Yu Lin