公开(公告)号：US20240243870A1

公开(公告)日：2024-07-18

申请号：US18398958

申请日：2024-04-04

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Woo Ram SHIN ,  Kyeong Pyo KIM ,  Young Jo KO ,  Kap Seok CHANG

IPC: H04L5/00 ,  H04L25/02

CPC classification number: H04L5/005 ,  H04L25/0224

Abstract: A method of a terminal, for channel estimation in a communication system, may comprise: receiving configuration information of a block reference signal from a base station; receiving a modulated data channel including the block reference signal according to the configuration information; and demodulating the block reference signal in the received data channel to estimate a channel for resources in a two-dimensional domain, to which the block reference signal is allocated.

公开(公告)号：US20240243948A1

公开(公告)日：2024-07-18

申请号：US18400247

申请日：2023-12-29

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Woo Ram SHIN ,  Kyeong Pyo KIM ,  Young Jo KO ,  Kap Seok CHANG

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

CPC classification number: H04L25/0228 ,  H04L5/0012 ,  H04L27/26532

Abstract: A method of a receiver, which relates to a Doppler frequency compensation technique in a communication system, may comprise: performing a demodulation process so that a fractional part of a Doppler shift of a received signal is compensated; and de-spreading the received signal for which the fractional part of the Doppler shift compensated from a first two-dimensional domain to a second two-dimensional domain.

公开(公告)号：US20220329376A1

公开(公告)日：2022-10-13

申请号：US17500402

申请日：2021-10-13

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kyeong Pyo KIM ,  Woo Ram SHIN ,  Young Jo KO ,  Kap Seok CHANG

IPC: H04L5/00 ,  H04L25/02 ,  H04W72/04

Abstract: An operation method of a transmitter in a communication system may comprise: configuring a first reference signal region for transmission of a first reference signal in the delay-Doppler domain; arranging the first reference signal having a sequence form in a specific region within the first reference signal region; transforming a delay-Doppler domain signal including the first reference signal into a time domain signal; and transmitting the time domain signal to a receiver.

公开(公告)号：US20240214149A1

公开(公告)日：2024-06-27

申请号：US18543894

申请日：2023-12-18

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kyeong Pyo KIM ,  Woo Ram SHIN ,  Young Jo KO ,  Kap Seok CHANG

IPC: H04L5/00 ,  H04B17/336 ,  H04W28/26

CPC classification number: H04L5/0051 ,  H04B17/336 ,  H04W28/26 ,  H04L5/0007

Abstract: According to an embodiment of the present disclosure, a method of designing a reference signal for phase noise estimation in an orthogonal frequency division multiplexing (OFDM) communication system, the method comprising: acquiring a magnitude of a frequency bandwidth of phase noise; acquiring a magnitude of a subcarrier; comparing the magnitudes of the subcarrier and the frequency bandwidth; selecting one of a first phase compensation scheme and a second phase compensation scheme based on the comparison result, and inserting the reference signal into an OFDM symbol based on the selected phase compensation scheme; and transmitting the OFDM symbol including the reference signal.

公开(公告)号：US20140169387A1

公开(公告)日：2014-06-19

申请号：US14105093

申请日：2013-12-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kyeong Pyo KIM ,  Hyoung Jin KWON ,  Min Ho CHEONG ,  Jae Seung LEE ,  Sok Kyu LEE

IPC: H04L29/06

CPC classification number: H04L69/22

Abstract: A communication apparatus and method for transmitting a group frame, and a user terminal and method for receiving a group frame are provided. The communication apparatus may transmit a group frame to each of a plurality of user terminals. The group frame may be generated by grouping, in a physical layer, frames that are respectively transmitted to the plurality of user terminals.

Abstract translation: 提供一种用于发送组帧的通信装置和方法，以及用于接收组帧的用户终端和方法。 通信装置可以将组帧发送到多个用户终端中的每一个。 可以通过在物理层中分组分别发送到多个用户终端的帧来生成组帧。

公开(公告)号：US20130165050A1

公开(公告)日：2013-06-27

申请号：US13723752

申请日：2012-12-21

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kyeong Pyo KIM ,  Seung Eun HONG ,  Jin Kyung KIM

IPC: H04W16/28

CPC classification number: H04W16/28 ,  H04B7/0408 ,  H04B7/0417 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0689

Abstract: Disclosed is a data transmission method that may enhance a channel capacity in a wireless channel environment of a frequency band having a high directivity in which a transmission apparatus may form a transmission beam and transmit a training signal while sequentially changing a direction of the formed transmission beam, a reception apparatus may form a reception beam and receive the training signal while sequentially changing a direction of the formed reception beam, and the transmission apparatus may receive a response signal from the reception apparatus with respect to the training signal and determine to a data transmission scheme based on the received response signal.

Abstract translation: 公开了一种数据传输方法，其可以增强具有高方向性的频带的无线信道环境中的信道容量，其中发送装置可以形成发送波束并发送训练信号，同时顺序地改变形成的发送波束的方向 接收装置可以形成接收波束并在顺序改变形成的接收波束的方向的同时接收训练信号，并且发送装置可以从训练信号接收来自接收装置的响应信号，并且确定数据传输 基于接收到的响应信号的方案。