公开(公告)号：US20210036805A1

公开(公告)日：2021-02-04

申请号：US16945324

申请日：2020-07-31

Applicant: Electronics and Telecommunications Research Institute

Inventor： Nam Il KIM

IPC: H04L1/00 ,  H03M13/15 ,  H03M13/27 ,  H03M13/25 ,  H03M13/00

Abstract: A method of processing a transmission signal may comprise grouping a coded bit sequence including a plurality of coded bits into a plurality of groups; comparing indices of code bits belonging to a first group among the plurality of groups and indices of code bits belonging to a second group among the plurality of groups; configuring the coded bits belonging to the first group as higher bits among bits constituting each modulation symbol based on a result of comparing the indices of the coded bits; configuring the coded bits belonging to the second group as lower bits among the bits constituting each modulation symbol based on the result of comparing the indices of the code bits; and generating the each modulation symbol by using the higher bits and the lower bits.

公开(公告)号：US20240223214A1

公开(公告)日：2024-07-04

申请号：US18396774

申请日：2023-12-27

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seok Ki KIM ,  Nam Il KIM ,  Sangbu Yun ,  Youngjoo Lee ,  Jeongwon Choe

IPC: H03M13/11 ,  H03M13/29 ,  H03M13/39

CPC classification number: H03M13/118 ,  H03M13/2903 ,  H03M13/3905

Abstract: A LDPC encoding method is provided, which is highly scalable and may support a variety of code cases and allow a high processing speed. The LDPC encoding includes: receiving an information sequence to be encoded; segmenting the information sequence into blocks of a predetermined length; deriving parity bits for each of the segmented blocks by using a predetermined parity check matrix; and generating a codeword by combining the parity bits into a corresponding segmented block. The operation of deriving parity bits for each of the segmented blocks includes: performing multiplications with at least one element of the parity check matrix by circularly shifting the segmented block a number of times corresponding to the at least one element of the parity check matrix; and performing XOR operations on a plurality of bits of a circularly-shifted segmented block in parallel.

公开(公告)号：US20220038114A1

公开(公告)日：2022-02-03

申请号：US17377643

申请日：2021-07-16

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Nam Il KIM

IPC: H03M13/11

Abstract: A method for decoding a low-density parity-check (LDPC) code, performed by a communication apparatus, includes: updating a variable node; determining n minimum values based on a min-sum algorithm (MSA); determining n indices based on the n minimum values; updating a check node using the n indices; calculating a log-likelihood ratio (LLR) value when the update of the check node is completed; and determining an information bit based on the LLR value.

公开(公告)号：US20250141517A1

公开(公告)日：2025-05-01

申请号：US18932521

申请日：2024-10-30

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jisoo PARK ,  Nam Il KIM ,  Moon-sik LEE ,  Jun Hwan LEE

IPC: H04B7/06 ,  H04W24/10 ,  H04W76/27

Abstract: A method of a user equipment (UE) may comprise: receiving a UE capability enquiry message from a base station; in response to the UE capability enquiry message, transmitting, to the base station, a UE capability message including CSI processing capability information capable of determining a CSI processing timing of the UE; receiving channel state information (CSI) measurement configuration information from the base station; measuring a reference signal (RS) received from the base station based on the CSI measurement configuration information and the CSI processing capability information; and transmitting, to the base station, a first CSI report message based on the measurement of the RS.

公开(公告)号：US20240211314A1

公开(公告)日：2024-06-27

申请号：US18389966

申请日：2023-12-20

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Nam Il KIM ,  Seok Ki KIM

IPC: G06F9/50

CPC classification number: G06F9/5038 ,  G06F9/5044

Abstract: A method for Low Density Parity Check (LDPC) encoding and decoding for a general-purpose processor in methods for performing LDPC encoding and decoding by a multi-core based general-purpose processor includes: generating a recognizable task from a plurality of code blocks (CBs) by the general-purpose processor; splitting the task into two or more split tasks; assigning the split tasks into the respective cores; generating LDPC encoded split tasks by performing LDPC encoding and/or LDPC decoding on each code block within the split task of the core; and concatenating the LDPC encoded split tasks.