公开(公告)号：US20170279648A1

公开(公告)日：2017-09-28

申请号：US15403738

申请日：2017-01-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin Hyuk SONG ,  Sang Jung RA ,  Jae Hwui BAE ,  Dong Joon CHOI ,  Nam Ho HUR

IPC: H04L27/26

CPC classification number: H04L27/2621 ,  H04L27/2618 ,  H04L27/3411

Abstract: Disclosed is a an apparatus for reducing a reducing a peak to average power ratio (PAPR) for layer division multiplexing (LDM) in an orthogonal frequency division multiplexing (OFDM) system, the apparatus may include a peak remover configured to detect a peak power value of a subcarrier signal that is input and generate a peak removal signal that decreases the detected peak power value, and a processor configured to perform constellation remapping on a first signal generated by combining the subcarrier signal and the peak removal signal and then generate a second signal into which additional data is inserted.

公开(公告)号：US20170048094A1

公开(公告)日：2017-02-16

申请号：US15211360

申请日：2016-07-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jae Hwui BAE ,  Sang Jung RA ,  Jae Ho LEE ,  Dong Joon CHOI ,  Nam Ho HUR

IPC: H04L27/26 ,  H04L12/28 ,  H04L5/00 ,  H04L25/02

CPC classification number: H04L5/0048 ,  H04L12/2801 ,  H04L25/022 ,  H04L25/0232 ,  H04L25/024 ,  H04L25/03159 ,  H04L27/2613 ,  H04L27/2647

Abstract: An apparatus and a method of channel estimation and equalization based on pilot signals, which acquire a channel estimation vector and effectively perform channel equalization by using scattered pilots and continuous pilots in a communication system to which an OFDM symbol is applied, such as a DOCSIS 3.1 Down stream PHY system using multiple carriers.

Abstract translation: 基于导频信号的信道估计和均衡的装置和方法，其通过在应用OFDM符号的通信系统中使用分散导频和连续导频来获取信道估计向量并有效地执行信道均衡，诸如DOCSIS 3.1 下行PHY系统使用多个载波。

公开(公告)号：US20170324541A1

公开(公告)日：2017-11-09

申请号：US15441799

申请日：2017-02-24

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jae Hwui BAE ,  Sang Jung RA ,  Jin Hyuk SONG ,  Dong Joon CHOI ,  Nam Ho HUR

IPC: H04L7/06 ,  H04L1/00 ,  H04L5/00 ,  H04L29/08

CPC classification number: H04L7/06 ,  H04L1/0071 ,  H04L5/005 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2657 ,  H04L27/2663 ,  H04L27/2671 ,  H04L27/2675 ,  H04L27/389 ,  H04L69/323

Abstract: Disclosed are a method for acquiring synchronization in a cable network, and a physical (PHY) transmitter and PHY receiver. The method for acquiring synchronization in a cable network according to an embodiment includes receiving, by a PHY receiver, a signal from a PHY transmitter, and acquiring, by the PHY receiver, channel synchronization when a symbol in which a channel preamble exists is detected from the received signal and a position of a frequency in which a channel subcarrier exists is detected from the detected symbol by performing a cross correlation operation on the received signal and the channel preamble.

公开(公告)号：US20180287823A1

公开(公告)日：2018-10-04

申请号：US15864733

申请日：2018-01-08

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jae Hwui BAE ,  Jin Hyuk SONG ,  Je Won LEE ,  Joon Young JUNG ,  Dong Joon CHOI ,  Nam Ho HUR

IPC: H04L25/02 ,  H04L27/26

CPC classification number: H04L25/022 ,  H04L27/266 ,  H04L27/2662 ,  H04L27/2666 ,  H04L27/2678 ,  H04L27/2695

Abstract: Disclosed are a roll-off period detection method, a symbol starting point detection method, a fractional frequency offset estimating method, and an OFDM downstream system using the same. A method of detecting a roll-off period in an OFDM downstream system according to an embodiment of the present disclosure may include: generating a temporary roll-off period by applying a windowing function to a signal having a preset length; and detecting a roll-off period based on any one of a cross correlation and a sum of differences between a detection target signal included in a range of two OFDM symbol signals based on a detection starting point, and the temporary roll-off period.

公开(公告)号：US20180102808A1

公开(公告)日：2018-04-12

申请号：US15656906

申请日：2017-07-21

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jae Hwui BAE ,  Sang-Jung RA ,  Jin Hyuk SONG ,  Joon Young JUNG ,  Dong Joon CHOI ,  Namho HUR

IPC: H04B3/46 ,  H04B3/23 ,  H04B1/06 ,  H04L29/08 ,  H04L5/00 ,  H04B17/21 ,  H04L7/00

CPC classification number: H04B3/46 ,  H04B1/06 ,  H04B3/232 ,  H04B17/21 ,  H04L5/001 ,  H04L7/0079 ,  H04L27/26 ,  H04L69/323

Abstract: A method of estimating an integer frequency offset and compensating for the integer frequency offset by an estimated error is provided. A frequency offset estimation method may include receiving a reception signal including PLC data and a physical layer link channel (PLC) preamble, detecting first position information on a position of a subcarrier of the PLC preamble in a frequency axis from the reception signal through a cross-correlation between the PLC preamble and the reception signal, detecting second position information on the position of the subcarrier of the PLC preamble defined in a transmission end by restoring the PLC data, and calculating a frequency offset by comparing the first position information with the second position information.

公开(公告)号：US20140146178A1

公开(公告)日：2014-05-29

申请号：US14035803

申请日：2013-09-24

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kwi Hoon KIM ,  Woong Shik YOU ,  Jae Hwui BAE ,  Sang Woo AHN ,  O Hyung KWON

IPC: G06F3/00 ,  G06K9/00 ,  G06F3/01

CPC classification number: G06K9/00771 ,  G01B11/022 ,  G01S17/023 ,  G06F3/013 ,  G06F3/017 ,  G06F3/14 ,  G06F3/1454 ,  G06K9/00335 ,  G08B13/19621 ,  H04N7/144 ,  H04N7/147 ,  H04N7/15 ,  H04N7/181 ,  H04N21/21805 ,  H04N21/2187 ,  H04N21/2743 ,  H04N21/4316 ,  H04N2007/145

Abstract: An image processing apparatus using a smart glass is provided, the image processing apparatus including an extractor to extract a first target to be observed by a user from a first image received from the smart glass and generate a second image using the extracted first target, an information collector to collect information related to the first target, and an image generator to reconstruct a third image using at least one of the second image and the information related to the first target, based on user settings.

Abstract translation: 提供了一种使用智能玻璃的图像处理装置，所述图像处理装置包括提取器，用于从由所述智能玻璃接收的第一图像提取用户观察到的第一目标，并使用所提取的第一目标生成第二图像; 信息收集器，用于收集与第一目标相关的信息;以及图像生成器，用于基于用户设置，使用第二图像和与第一目标相关的信息中的至少一个来重建第三图像。

公开(公告)号：US20140143808A1

公开(公告)日：2014-05-22

申请号：US13850657

申请日：2013-03-26

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jae Hwui BAE ,  Sang Woo AHN ,  Woong Shik YOU ,  O Hyung KWON

IPC: H04N21/85

CPC classification number: H04N21/2381 ,  H04N21/6162 ,  H04N21/6405

Abstract: The present invention discloses a multicasting broadcasting apparatus and method. In an aspect, a multicasting broadcasting method includes receiving content from a user, inspecting the content, performing IP encapsulation on the content, reconfiguring a broadcasting frame so that the content does not interfere with other broadcasting signals, generating a modulation signal comprising the content, and broadcasting the modulation signal to target receivers over a broadcasting network.

Abstract translation: 本发明公开了一种组播广播装置及方法。 一方面，多播广播方法包括从用户接收内容，检查内容，对内容进行IP封装，重新配置广播帧，使得内容不干扰其他广播信号，生成包含内容的调制信号， 并且通过广播网络将调制信号广播到目标接收机。