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    Method and apparatus for encoding/decoding channel in communication or broadcasting system
    74.
    发明授权
    Method and apparatus for encoding/decoding channel in communication or broadcasting system 有权

    公开(公告)号：US11646818B2

    公开(公告)日：2023-05-09

    申请号：US17582300

    申请日：2022-01-24

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Seho Myung ,  Kyungjoong Kim ,  Hongsil Jeong

    IPC: H04L1/00

    CPC classification number: H04L1/0057 ,  H04L1/0041 ,  H04L1/0061 ,  H04L1/0009 ,  H04L1/0045

    Abstract: This disclosure relates to a 5G or pre-5G communication system for supporting a higher data transfer rate than a 4G communication system such as LTE. The present invention relates to a method for encoding and decoding a channel in a communication or broadcasting system, comprising the steps of: determining an input bit size (CBS); determining a code rate (R); determining a size (Z) of a block; comparing the determined CBS and code rate with predetermined reference values; determining an LDPC sequence to perform LDPC encoding according to the comparison result; and performing LDPC encoding and decoding on the basis of the LDPC sequence and the block size. Further, the present invention comprises the steps of: determining a code rate (R) indicated by a modulation and coding scheme (MCS) index; determining a transport block size; and determining either a first basic matrix or a second basic matrix as a basic matrix on the basis of the transport block size and the code rate.

    Method and apparatus for data decoding in communication or broadcasting system
    78.
    发明授权
    Method and apparatus for data decoding in communication or broadcasting system 有权

    公开(公告)号：US11177830B2

    公开(公告)日：2021-11-16

    申请号：US17016915

    申请日：2020-09-10

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Seho Myung ,  Min Jang ,  Yangsoo Kwon ,  Jeongho Yeo ,  Hongsil Jeong

    IPC: H03M13/11 ,  H04L1/00 ,  H04L25/03 ,  H03M13/00 ,  G16Y10/75

    Abstract: The disclosure relates to a communication technique for converging a 5G communication system for supporting a higher data transfer rate beyond a 4G system with an IoT technology, and a system therefor. The disclosure may be applied to intelligent services (for example, smart home, smart buildings, smart cities, smart cars or connected cars, health care, digital educations, retail business, security and safety-related services, etc.) based on a 5G communication technology and an IoT-related technology. The disclosure provides an apparatus and a method for efficiently decoding a low-density parity-check (LDPC) code in a communication or broadcasting system. Further, the disclosure provides an LDPC decoding device and method for improving decoding performance without increasing the decoding complexity by applying suitable decoding scheduling according to the structural or algebraic characteristics of the LDPC code in a process of decoding the LDPC code using layered scheduling or a scheme similar thereto. Further, a method of a low density parity check (LDPC) decoding performed by a receiving device in a wireless communication system is provided, the method comprising: receiving, from a transmitting device, a signal corresponding to input bits; performing demodulation based on the signal to determine values corresponding to the input bits; identifying a number of the input bits based on the signal; identifying a base matrix and a lifting size based on the number of the input bits; identifying a parity check matrix based on the base matrix; identifying an index corresponding to the values; determining a number of layers based on the index and the lifting size; determining an order for LDPC decoding based on the number of layers and a predetermined sequence; and performing LDPC decoding to determine the input bits based on the values, the parity check matrix and the order.

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