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    POLAR CODE-BASED DECODING METHOD AND APPARATUS
    1.
    发明公开
    POLAR CODE-BASED DECODING METHOD AND APPARATUS 审中-公开

    公开(公告)号：US20240178938A1

    公开(公告)日：2024-05-30

    申请号：US18458945

    申请日：2023-08-30

    Applicant: POSTECH Research and Business Development Foundation

    Inventor： Youngjoo LEE ,  Young Seok KIM ,  Dain PARK

    IPC: H04L1/00

    CPC classification number: H04L1/0063 ,  H04L1/0052

    Abstract: A polar code-based decoding method may comprise: converting a plurality of LLRs of calculation-target bits into a plurality of absolute (ABS) LLR values; sorting the plurality of ABS LLR values in order of size so that a minimum ABS LLR value is designated from among the plurality of ABS LLR values; multiplying the minimum ABS LLR value by a preset weight; and updating path metrics (PMs) of the calculation-target bits in an order in which the plurality of ABS LLR values are sorted, wherein the updating of the PMs of the calculation-target bits comprises, even when a specific ABS LLR value of a specific calculation-target bit is equal or similar to the minimum ABS LLR value, updating a PM of the specific calculation-target bit with the minimum ABS LLR value multiplied by the preset weight.

    Systems and methods for providing end-to-end data protection
    2.
    发明授权
    Systems and methods for providing end-to-end data protection 有权

    公开(公告)号：US11817952B2

    公开(公告)日：2023-11-14

    申请号：US17588832

    申请日：2022-01-31

    Applicant: Dialog Semiconductor (UK) Limited

    Inventor： Carl Adams-Waite ,  Robert Waterworth

    IPC: H04L1/00 ,  H04L61/2503

    CPC classification number: H04L1/0063 ,  H04L1/0043 ,  H04L1/0052 ,  H04L61/2503

    Abstract: A system for providing end-to-end data protection between a transmitting end device and a receiving end device is presented. The system has a transmitting end device to calculate a first check value for a first message, which has first and second data blocks; the receiving end device; and a remapping device. The remapping device is configured to remap a data block among the first and second data blocks for generating a second message for the receiving end device. The remapping device also determines a remapping value based on the data block and the remapped data block, such that a second check value that would be calculated for the second message would be equal to the first check value, and wherein the second message comprises the other one of the first and second data blocks, the remapped data block, and the remapping value.

    DYNAMIC FROZEN BITS AND ERROR DETECTION FOR POLAR CODES
    3.
    发明公开
    DYNAMIC FROZEN BITS AND ERROR DETECTION FOR POLAR CODES 审中-公开

    公开(公告)号：US20230224077A1

    公开(公告)日：2023-07-13

    申请号：US18187255

    申请日：2023-03-21

    Applicant: QUALCOMM Incorporated

    Inventor： Changlong XU ,  Jian Li ,  Chao WEI ,  Jing JIANG ,  Jilei HOU

    IPC: H04L1/00

    CPC classification number: H04L1/0061 ,  H04L1/0052

    Abstract: Methods, systems, and devices for wireless communication are described for dynamic frozen bits of polar codes for early termination and performance improvement. A wireless device may receive a signal comprising a codeword encoded using a polar code. The wireless device may perform decoding of the codeword including at least: parity check of a first subset of decoding paths for making a decision on early termination of decoding of the codeword based on dynamic frozen bits, and generating path metrics for a second subset of the decoding paths that each pass the parity check based on the dynamic frozen bits, and performing error detection on a bit sequence corresponding to one of the second subset of the decoding paths based at part on error detection bits and the generated path metrics. The wireless device may process the information bits based on a result of the decoding.

    Reduced overhead error detection code design for decoding a codeword
    4.
    发明授权
    Reduced overhead error detection code design for decoding a codeword 有权

    公开(公告)号：US11695505B2

    公开(公告)日：2023-07-04

    申请号：US17500347

    申请日：2021-10-13

    Applicant: Qualcomm Incorporated

    Inventor： Changlong Xu ,  Liangming Wu ,  Jian Li ,  Kai Chen ,  Jing Jiang ,  Gabi Sarkis ,  Hao Xu

    IPC: H04L1/00 ,  H04L1/1812

    CPC classification number: H04L1/0052 ,  H04L1/0041 ,  H04L1/0061 ,  H04L1/1812

    Abstract: Methods, systems, and devices for wireless communications are described. An encoder of a wireless device may receive a transport block (TB) for transmission and segment the transport block into a set of multiple, smaller data segments that respectively correspond to a plurality of code blocks of the TB. The encoder may generate a code block level (CB-level) error detection code (EDC) for a subset of the data segments. The encoder may generate a transport block-level (TB-level) EDC for the TB using the data segments. Each of the code blocks (CBs) may be of the same size and may include one of the data segments. A subset of the CBs may include a data segment from the subset of the data segments and one of the CB-level EDCs. The remaining CBs that are not part of the subset may include a remaining data segments and the TB-level EDC.

    Sequence detector
    10.
    发明授权
    Sequence detector 有权

    公开(公告)号：US09942005B2

    公开(公告)日：2018-04-10

    申请号：US15251673

    申请日：2016-08-30

    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

    Inventor： Giovanni Cherubini ,  Roy D. Cideciyan ,  Thomas H. Toifl ,  Hazar Yuksel

    IPC: H04L1/00 ,  H03M13/39 ,  H03M13/41

    CPC classification number: H04L1/0054 ,  H03M13/3977 ,  H03M13/4115 ,  H03M13/4169 ,  H04L1/0052 ,  H04L1/006 ,  H04L25/03

    Abstract: A sequence detector is provided for detecting symbol values corresponding to a sequence of input samples obtained from a transmission channel. The sequence detector comprises a branch metric unit (BMU), a path metric unit (PMU) and a survivor memory unit. The branch metric unit calculates branch metrics for respective possible transitions between states of a trellis. The path metric unit accumulates branch metrics provided by the branch metric unit in order to establish path metrics. The survivor memory unit selects a survivor path based on the path metrics and outputs a survivor sequence of the detected symbols corresponding to the survivor path. The sequence detector is configured such that the synchronization length is different than the survivor path memory length.

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