公开(公告)号：US20150237407A1

公开(公告)日：2015-08-20

申请号：US14617087

申请日：2015-02-09

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： In Ki LEE ,  Min Hyuk KIM ,  Deock Gil OH ,  Ji Won JUNG

IPC: H04N21/643 ,  H04L25/03 ,  H04L1/00 ,  H04N21/61 ,  H04N21/44

CPC classification number: H04L25/03 ,  H04L1/005 ,  H04L1/0057 ,  H04L1/0071 ,  H04L25/03318

Abstract: Disclosed are a signal receiving apparatus based on FTN and a signal decoding method thereof, and the apparatus includes: an equalizer calculating, when a signal sampled by Fast to Nyquist (FTN) is received on a communication channel, a posterior probability of information bits and calculating a log likelihood ratio by using the calculated posterior probability; a deinterleaver deinterleaving bit data output from the equalizer; a decoder correcting of signal interference of the data bits deinterleaved by the deinterleaver by using the LLR and decoding the corrected signal interference; and an interleaver interleaving data output from the decoder to provide the interleaved data to the equalizer.

Abstract translation: 公开了一种基于FTN的信号接收装置及其信号解码方法，该装置包括：均衡器，当在通信信道上接收到通过快速到奈奎斯特（FTN）采样的信号时，计算信息比特的后验概率， 通过使用计算的后验概率计算对数似然比; 解交织器对来自均衡器的比特数据进行解交织; 通过使用LLR对由解交织器解交错的数据位的信号干扰进行校正的解码器，对解调后的信号干扰进行解码; 交织器交织从解码器输出的数据，以将间隔的数据提供给均衡器。

公开(公告)号：US20150215662A1

公开(公告)日：2015-07-30

申请号：US14251129

申请日：2014-04-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Min Su SHIN ,  Deock Gil OH

IPC: H04N21/266 ,  H04N21/2365 ,  H04N21/2383 ,  H04N21/61

CPC classification number: H04N21/26603 ,  H04N21/2365 ,  H04N21/2383

Abstract: Disclosed is a broadcasting transmission apparatus for simulcast broadcasting, including: a first stream generating unit configured to generate a first video stream by encoding video data; a second stream generating unit configured to generate a second video stream by encoding the video data; a PMT generating unit configured to generate a program map table (PMT) including a first descriptor that describes whether one or more programs included in the first video stream and the second video stream each are simulcast broadcasting targets and a second descriptor that describes video qualities of the one or more programs; a multiplexing unit configured to generate a first multiplexed stream and a second multiplexed stream by multiplexing each of the first stream and the second stream, and the PMT; a modulation unit configured to modulate the first multiplexed stream and the second multiplexed stream; and a transmission unit configured to transmit the modulated first and second multiplexed streams.

Abstract translation: 公开了一种用于同播广播的广播发送装置，包括：第一流生成单元，被配置为通过对视频数据进行编码来生成第一视频流; 第二流生成单元，被配置为通过对视频数据进行编码来生成第二视频流; PMT生成单元，被配置为生成包括描述第一描述符的节目映射表（PMT），所述第一描述符描述包括在第一视频流中的一个或多个节目和第二视频流各自是联播广播目标;以及第二描述符，其描述视频质量 一个或多个程序; 复用单元，被配置为通过复用第一流和第二流中的每一个以及PMT来生成第一多路复用流和第二多路复用流; 调制单元，被配置为对所述第一多路复用流和所述第二多路复用流进行调制; 以及发送单元，被配置为发送经调制的第一和第二多路复用流。

公开(公告)号：US20150207559A1

公开(公告)日：2015-07-23

申请号：US14328965

申请日：2014-07-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Joon Gyu RYU ,  Man Kyu PARK ,  Deock Gil OH ,  Nam Young KIM ,  Myoung Soo AHN

IPC: H04B7/155

CPC classification number: H04B7/18528

Abstract: A first terminal according to the present invention is a first terminal among a plurality of terminals which is connected to a district center network management device in a VSAT (very small aperture terminal) system, including: a communication unit which connects the first terminal to the district center network management device through a star network; and a control unit which creates SCPC call establishment request information, transmits the created SCPC call establishment request information to the district center network management device through the communication unit, and performs SCPC connection with another terminal based on SCPC call establishment information which is transmitted from the district center network management device in response to the transmitted SCPC call establishment request information when SCPC (single channel per carrier) connection is desired to be performed with another terminal among the plurality of terminals.

Abstract translation: 根据本发明的第一终端是多个终端中的第一终端，其连接到VSAT（非常小孔径终端）系统中的区域中心网络管理设备，包括：通信单元，其将第一终端连接到 区中心网络管理设备通过星形网络; 以及控制单元，其创建SCPC呼叫建立请求信息，通过通信单元将创建的SCPC呼叫建立请求信息发送到区域中心网络管理设备，并且基于从SCPC呼叫建立信息发送的SCPC呼叫建立信息，与另一终端进行SCPC连接 区域中心网络管理装置响应于所述SCPC呼叫建立请求信息，当SCPC（每个载波单个信道）连接期望与多个终端中的另一个终端执行时。

公开(公告)号：US20140064118A1

公开(公告)日：2014-03-06

申请号：US13872283

申请日：2013-04-29

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyun Ha HONG ,  Man Kyu PARK ,  Min Su SHIN ,  Deock Gil OH

IPC: H04W24/00

CPC classification number: H04W24/00 ,  H04B7/18513

Abstract: Provided is a satellite terminal controlling apparatus and method that may measure a packet loss rate of a return link at a central station, may determine a modulation and coding (MODCOD) value of the return link using the packet loss rate, and may control MODCOD of a satellite terminal with respect to the return link.

Abstract translation: 提供了可以测量中心站的返回链路的分组丢失率的卫星终端控制装置和方法，可以使用分组丢失率来确定返回链路的调制和编码（MODCOD）值，并且可以控制MODCOD的MODCOD 相对于返回链路的卫星终端。

公开(公告)号：US20130148696A1

公开(公告)日：2013-06-13

申请号：US13711538

申请日：2012-12-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Joon Gyu RYU ,  Deock Gil OH

IPC: H04B1/707

CPC classification number: H04B1/707 ,  H04B1/69 ,  H04N21/6143

Abstract: Provided is a satellite broadcasting system and method using a spread spectrum technique to improve satellite broadcasting availability in a rainy environment and to provide a satellite broadcasting N-screen service. A satellite broadcasting transmitter of the satellite broadcasting system may encode a broadcast signal into each of a high definition (HD) signal, a standard definition (SD) signal, and a low definition (LD) signal, may modulate each of the encoded HD signal and the encoded SD signal by a predetermined modulation scheme, may spread a spectrum of the encoded LD signal to generate a spread spectrum signal, may to modulate the spread spectrum signal, may combine the modulated spread spectrum signal with the modulated HD signal and the modulated SD signal to generate a combined modulated signal, and may transmit the combined modulated signal to a satellite.

Abstract translation: 提供了一种使用扩频技术来改善雨天环境中的卫星广播可用性并提供卫星广播N屏幕服务的卫星广播系统和方法。 卫星广播系统的卫星广播发射机可以将广播信号编码为高分辨率（HD）信号，标准清晰度（SD）信号和低清晰度（LD））信号中的每一个，可以调制每个编码的HD信号 并且通过预定调制方案的经编码的SD信号可以扩展编码的LD信号的频谱以生成扩展频谱信号，以便调制扩频信号，可以将调制的扩频信号与调制的HD信号和调制的 SD信号以产生组合的调制信号，并且可以将组合的调制信号发射到卫星。

公开(公告)号：US20180278453A1

公开(公告)日：2018-09-27

申请号：US15711332

申请日：2017-09-21

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jong Keun LEE ,  Dae Ig CHANG ,  Deock Gil OH

IPC: H04L27/26 ,  H04L27/34 ,  H04L25/02

CPC classification number: H04L27/2621 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0232 ,  H04L27/2605 ,  H04L27/2615 ,  H04L27/2626 ,  H04L27/2666 ,  H04L27/2675 ,  H04L27/3411

Abstract: Disclosed is a communication method and apparatus without side information (SI) using a cross-correlation. The communication method may include obtaining a reception pilot signal from a reception signal, and detecting a phase sequence used for a transmission signal based on the reception pilot signal.

公开(公告)号：US20160269049A1

公开(公告)日：2016-09-15

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: H03M13/27 ,  H03M13/11 ,  H04L1/00

CPC classification number: H03M13/1102 ,  H03M13/1165 ,  H03M13/255 ,  H03M13/27 ,  H04L1/0042 ,  H04L1/005 ,  H04L1/0057 ,  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.

Abstract translation: 提供了一种数据发送和接收装置，其可以使用比奈奎斯特（FTN）方法处理要发送的信号。 数据发送和接收装置可以使用具有基于预设参考的第一度的第一矩阵和具有单个对角矩阵结构的第二矩阵来执行要发送的数据的低密度奇偶校验（LDPC）编码，独立地执行交织 以及数据的信息位和奇偶校验位中的每一个上的符号映射，基于FTN方法以传输速率加速输出信号，并发送数据。

公开(公告)号：US20150139072A1

公开(公告)日：2015-05-21

申请号：US14299189

申请日：2014-06-09

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyun Ha HONG ,  Deock Gil OH

IPC: H04W72/04 ,  H04W72/08

CPC classification number: H04W72/0446 ,  H04B7/18513

Abstract: Provided are a satellite mesh communication system and an adaptive coding modulation (ACM) control method using the same. The ACM control method include establishing, by the central station, star and mesh connections between the terminal stations, receiving, by each terminal station, a data burst including MODCOD information for ACM control through the established mesh connection, checking, by each terminal station, a mesh connection link state in response to reception of the data burst, determining, by each terminal station, new requested MODCOD information in units of established mesh connections to transmit a data burst including the determined requested MODCOD information to a partner terminal station, and changing a previous MODCOD according to the requested MODCOD to transmit a data burst in units of mesh connections according to the changed MODCOD.

Abstract translation: 提供了一种使用其的卫星网状通信系统和自适应编码调制（ACM）控制方法。 ACM控制方法包括：通过中心站建立终端之间的星形和网状连接，每个终端通过建立的网状连接接收包括用于ACM控制的MODCOD信息的数据突发， 响应于数据突发的接收的网状连接链路状态，由每个终端确定以建立的网状连接为单位的新的所请求的MODCOD信息，以将包括所确定的所请求的MODCOD信息的数据突发发送到伙伴终端站，以及改变 根据所请求的MODCOD的先前MODCOD，根据改变的MODCOD以网格连接为单位发送数据突发。

公开(公告)号：US20140226766A1

公开(公告)日：2014-08-14

申请号：US14104748

申请日：2013-12-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yong Ho LEE ,  Deock Gil OH

IPC: H04L1/00

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: 提供了最大后验（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：US20140082675A1

公开(公告)日：2014-03-20

申请号：US14018361

申请日：2013-09-04

Applicant: Electronics and Telecommunications Research Institute

Inventor： Pan Soo KIM ,  Deock Gil OH

IPC: H04N21/61

CPC classification number: H04N21/6193 ,  H04L1/0003 ,  H04L1/0009 ,  H04L27/0008 ,  H04L27/2601 ,  H04L27/2602 ,  H04N21/2383

Abstract: Provided is a digital video broadcasting-satellite-second generation (DVB-S2) based transmission and reception apparatus and method operable in circumstances of a low signal to noise ratio (SNR), the DVB-S2 based transmission and reception apparatus including a DVB-S2 based transmitter, a mapping unit to determine bit mapping based on at least one of a state of a transmission channel and an area to be applied, and a physical layer frame (PLframe) replica processing unit to repeat a PLframe in which a physical layer header (PLheader) corresponding to a spreading factor (SF) is inserted.

Abstract translation: 提供了一种基于数字视频广播 - 卫星二代（DVB-S2）的发送和接收装置和方法，其在低信噪比（SNR）的情况下可操作，基于DVB-S2的发送和接收装置包括DVB- 基于S2的发射机，基于传输信道的状态和要应用的区域中的至少一个确定比特映射的映射单元和物理层帧（PLframe）复制处理单元，以重复其中物理层 插入与扩展因子（SF）对应的标题（PLheader）。