公开(公告)号：US09236889B2

公开(公告)日：2016-01-12

申请号：US14104748

申请日：2013-12-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yong Ho Lee ,  Deock Gil Oh

IPC: H03M13/03 ,  H03M13/41 ,  H04L1/00 ,  H03M13/39

CPC classification number: H03M13/4107 ,  H03M13/3905 ,  H03M13/3922 ,  H04L1/0052 ,  H04L1/0055

Abstract: A maximum a posteriori (MAP) decoding apparatus and method are provided, which select a path having a maximum value without calculating all path metrics by generating metric difference vectors based on generated tables, calculating metrics of a path formed through a combination of a state and a branch each having a maximum metric, and calculating an index and a metric of a current state to which a calculation value is to be applied based on a result of comparing a state metric difference vector and a branch metric difference vector.

Abstract translation: 提供最大后验（MAP）解码装置和方法，其通过基于生成的表生成度量差向量来选择具有最大值的路径而不计算所有路径度量，计算通过状态和状态的组合形成的路径的度量 每个分支具有最大度量，并且基于比较状态度量差矢量和分支度量差矢量的结果来计算要应用计算值的当前状态的索引和度量。

公开(公告)号：US11201666B2

公开(公告)日：2021-12-14

申请号：US16723448

申请日：2019-12-20

Applicant: Electronics and Telecommunications Research Institute

Inventor： Pansoo Kim ,  Deock Gil Oh ,  Joon Gyu Ryu

IPC: H04B7/204 ,  H04B7/185

Abstract: Disclosed is a communication method of a satellite and a ground station and apparatuses performing the same. The communication method includes transmitting a plurality of frames to a satellite based on a beam hopping time plan (BHTP) of the satellite and a ground station and synchronizing the BHTP based on an index of a frame received through a beam switching window (BSW) allocated to the ground station among the plurality of frames, and an identification value indicating at least one sub-frame included in the frame.

公开(公告)号：US10116331B2

公开(公告)日：2018-10-30

申请号：US15067388

申请日：2016-03-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Pan Soo Kim ,  Deock Gil Oh ,  Xavier Giraud

IPC: H03M13/11 ,  H04L1/00 ,  H03M13/25 ,  H03M13/27 ,  H04L25/03

Abstract: Provided is a data transmitting and receiving apparatus that may process a signal to be transmitted using a faster-than-Nyquist (FTN) method. The data transmitting and receiving apparatus may perform low-density parity-check (LDPC) encoding on data to be transmitted using a first matrix having a first degree based on a preset reference and a second matrix having a single diagonal matrix structure, independently perform interleaving and symbol mapping on each of an information bit and a parity bit of the data, accelerate an output signal by a transmission rate based on the FTN method, and transmit the data.

公开(公告)号：US09621381B2

公开(公告)日：2017-04-11

申请号：US14609759

申请日：2015-01-30

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Pan Soo Kim ,  Deock Gil Oh

IPC: H04L25/03

CPC classification number: H04L25/03038 ,  H04L25/03057 ,  H04L25/0328 ,  H04L2025/03484 ,  H04L2025/03636 ,  H04L2025/03675 ,  H04L2025/03726

Abstract: Disclosed are a communication apparatus and a communication method capable of improving transmitting/receiving frequency efficiency of a satellite signal per bandwidth or spectral efficiency (S.E) per bandwidth by removing and improving a distortion or inter-symbol interference for applying a minimum-mean square error (MMSE) equalizer required to detect a frame synchronization and a modulation code rate in a satellite service for satellite broadcasting or communication under the variable coding and modulation (VCM) or adaptive coding and modulation (ACM) environment.

公开(公告)号：US09294209B2

公开(公告)日：2016-03-22

申请号：US14373612

申请日：2013-01-18

Applicant: Electronics and Telecommunications Research Institute

Inventor： Pan Soo Kim ,  Deock Gil Oh

IPC: H04B7/00 ,  H04H20/71 ,  H04B7/185 ,  H04W4/00 ,  H04H60/02 ,  H04H20/74

CPC classification number: H04H60/02 ,  H04H20/74

Abstract: An apparatus and method for transmitting, through multiplexing a data frame that generates at least one super frame including at least one slice configured in a unit of a plurality of PLframes, generates a multiplexing super frame by rotating the at least one super frame by a predetermined phase value, and transmits the at least one super frame is provided.

Abstract translation: 一种用于通过多路复用产生包括以多个PL帧为单位配置的至少一个片的至少一个超帧的数据帧来发送多路复用超帧的装置和方法，通过将至少一个超帧旋转预定的 相位值，并发送至少一个超帧。

公开(公告)号：US09094281B2

公开(公告)日：2015-07-28

申请号：US13752498

申请日：2013-01-29

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Man Kyu Park ,  Deock Gil Oh

IPC: H04L12/26 ,  H04W28/02

CPC classification number: H04L43/00 ,  H04L43/0835 ,  H04W28/0242

Abstract: Provided is a method of identifying a transmission control protocol (TCP) packet loss, including transmitting at least one TCP data packet to a TCP receiver, estimating wireless channel status information using the TCP receiver by interaction between a TCP layer and a physical layer, and receiving an acknowledgement (ACK) packet including the estimated wireless channel status information from the TCP receiver.

Abstract translation: 提供了一种识别传输控制协议（TCP）分组丢失的方法，包括：向TCP接收机发送至少一个TCP数据分组，使用TCP接收机通过TCP层与物理层之间的交互来估计无线信道状态信息;以及 从TCP接收机接收包括估计的无线信道状态信息的确认（ACK）分组。

公开(公告)号：US20150009882A1

公开(公告)日：2015-01-08

申请号：US14373612

申请日：2013-01-18

Applicant: Electronics and Telecommunications Research Institute

Inventor： Pan Soo Kim ,  Deock Gil Oh

IPC: H04B7/26 ,  H04H60/02 ,  H04J3/16

CPC classification number: H04H60/02 ,  H04H20/74

Abstract: An apparatus and method for transmitting, through multiplexing a data frame that generates at least one super frame including at least one slice configured in a unit of a plurality of PLframes, generates a multiplexing super frame by rotating the at least one super frame by a predetermined phase value, and transmits the at least one super frame is provided.

Abstract translation: 一种用于通过多路复用产生包括以多个PL帧为单位配置的至少一个片的至少一个超帧的数据帧来发送多路复用超帧的装置和方法，通过将至少一个超帧旋转预定的 相位值，并发送至少一个超帧。