公开(公告)号：US10484161B2

公开(公告)日：2019-11-19

申请号：US15228512

申请日：2016-08-04

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yoochang Eun ,  Mingoo Kim ,  Chaehag Yi

IPC: H04L5/00 ,  H04L1/00

Abstract: A method and an apparatus are provided for determining a downlink control indicator (DCI) at a receiver. A signal is received at the receiver. The receiver measures channel quality based on the received signal. Signals of physical downlink control channel (PDCCH) areas that correspond to each channel format indicator (CFI) in the received signal are decoded, if a measurement of the channel quality is not a configuration condition. The receiver obtains the CFI by decoding a physical control format indicator channel (PCFICH) of the received signal, if the measurement of the channel quality is the configuration condition. The receiver determines the DCI based on the decoded signals.

公开(公告)号：US10382061B2

公开(公告)日：2019-08-13

申请号：US16057719

申请日：2018-08-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyungu Kang ,  Yoochang Eun

IPC: H03M13/23 ,  H04L1/00 ,  H03M13/41

Abstract: A convolutional decoder includes a first storage, a second storage, a branch metric processor to determine branch metrics for transitions of states from a start step to a last step according to input bit streams, an ACS processor to select maximum likelihood path metrics to determine a survival path according to the branch metrics and to update states of the start step to the first storage and the second storage alternately based on the selection of the maximum likelihood path metrics, and a trace back logic to selectively trace back the survival path based on the states of the start step stored in a selected storage among the first storage and the second storage.

公开(公告)号：US10439652B2

公开(公告)日：2019-10-08

申请号：US15339264

申请日：2016-10-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyungu Kang ,  Yoochang Eun

IPC: H03M13/00 ,  H03M13/41 ,  H03M13/23 ,  H03M13/39 ,  H04L1/00 ,  H04W72/04 ,  H03M13/37 ,  H04W84/04

Abstract: A mobile device includes a display, a mobile-communication modem including a Viterbi decoder (VD) configured to decode a tail biting convolutional code (TBCC)-encoded data, a memory coupled to the mobile-communication modem, and a wireless antenna coupled to the mobile-communication modem and to receive a Physical Downlink Control Channel (PDCCH). The VD is configured to: receive data encoded by TBCC; select a candidate to initiate a training section; determine final path metric (PM) values of possible states at a last step of the training section; determine a PM-related value based on the final PM values of the possible states; and determine an early termination of a decoding for the candidate based on the PM-related value.

公开(公告)号：US10069517B2

公开(公告)日：2018-09-04

申请号：US15340992

申请日：2016-11-02

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyungu Kang ,  Yoochang Eun

IPC: H03M13/23 ,  H03M13/41 ,  H04L1/00

Abstract: A convolutional decoder includes a first storage, a second storage, a branch metric processor to determine branch metrics for transitions of states from a start step to a last step according to input bit streams, an ACS processor to select maximum likelihood path metrics to determine a survival path according to the branch metrics and to update states of the start step to the first storage and the second storage alternately based on the selection of the maximum likelihood path metrics, and a trace back logic to selectively trace back the survival path based on the states of the start step stored in a selected storage among the first storage and the second storage.

公开(公告)号：US12199634B2

公开(公告)日：2025-01-14

申请号：US18058388

申请日：2022-11-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yoochang Eun ,  Woongjae Han

IPC: H03M13/11

Abstract: There is provided a decoding apparatus for decoding a low density parity check (LDPC) code, wherein the decoding apparatus includes a memory a memory configured to store a scheduling table indicating a desired processing order of a plurality of rows included in a parity check matrix and a plurality of columns included in each of the rows of the parity check matrix, and processing circuitry configured to decode the LDPC code based on the scheduling table, the decoding including performing processing on at least one column included in a second scheduled row of the parity check matrix before processing of all columns included in a first scheduled row of the parity check matrix has been completed.

公开(公告)号：US20240154649A1

公开(公告)日：2024-05-09

申请号：US18498778

申请日：2023-10-31

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yoochang Eun

IPC: H04B7/0413 ,  H04L1/00

CPC classification number: H04B7/0413 ,  H04L1/005 ,  H04L1/0063

Abstract: An operating method of a decoder device, included in a reception device of a multiple input multiple output (MIMO) communication system, includes receiving a transport block including a plurality of code blocks from a transmission device, performing sequential decoding on the plurality of code blocks and performing iterative decoding by up to a maximum iteration number on each of the plurality of code blocks, monitoring a result of the sequential decoding in real time to generate a count value of a decoding fail number, and determining whether to activate selective skipping of the iterative decoding or selective skipping of the sequential decoding on one or more remaining code blocks of the transport block, based on the count value.