公开(公告)号：US09780975B1

公开(公告)日：2017-10-03

申请号：US15291832

申请日：2016-10-12

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sang Woon Kwak ,  Joung Il Yun ,  Myung Sun Baek ,  Young Su Kim ,  Hyoung Soo Lim ,  Nam Ho Hur

IPC: H04L25/03 ,  H04L25/06 ,  H04L27/26 ,  H04B1/04

CPC classification number: H04L25/03834 ,  H04B1/04 ,  H04L25/03343 ,  H04L25/068 ,  H04L25/497

Abstract: A Faster-Than-Nyquist (FTN) signal transmission apparatus and method thereof. The signal transmission apparatus includes a pilot interference estimator and compensator configured to estimate interference on pilot symbols by a Faster-Than-Nyquist (FTN) signal generated by FTN modulating a sequence of data symbols, and generate a compensated pilot symbol sequence to cancel the estimated interference; a pilot FTN modulator configured to generate an FTN pilot signal in which inter-pilot symbol interference does not occur, by performing FTN pulse-shaping on the compensated pilot symbol sequence; and a transmitter configured to transmit an FTN data signal and the FTN pilot signal.

公开(公告)号：US12169689B2

公开(公告)日：2024-12-17

申请号：US17752611

申请日：2022-05-24

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Myung Sun Baek ,  Seung Hee Kim ,  Young Soo Park ,  Won Joo Park ,  Sang Yun Lee ,  Yong Tae Lee

IPC: G06F40/242 ,  G06F16/35 ,  G06F40/268 ,  G06F40/279 ,  G06Q50/26

Abstract: A crime type inference system based on text data, may include: a keywords dictionary construction unit configured to receive crime source data, and generate a crime type keywords dictionary by extracting crime keywords; a data set construction unit configured to generate a dataset for crime type learning by using the crime source data and the keywords dictionary; a crime type prediction model training unit configured to generate a crime type prediction model by using the dataset, and train the crime type prediction model; and a crime type inference unit configured to infer a crime type by using new crime data.

公开(公告)号：US11329794B2

公开(公告)日：2022-05-10

申请号：US16727708

申请日：2019-12-26

Applicant: Electronics and Telecommunications Research Institute

Inventor： Myung Sun Baek ,  Jin Hyuk Song ,  Joon Young Jung ,  Heung Mook Kim ,  Yong Seong Cho

IPC: H04L5/14 ,  H04W52/36 ,  H04W24/08

Abstract: Disclosed are a method and a device for transmitting and receiving a signal, the method including: identifying a downlink signal-only transmission section in which a first electronic device transmits a downlink signal to a second electronic device, and transmitting the signal in the downlink signal-only transmission section; detecting at least one symbol that has a power value relatively higher than a predetermined threshold value; estimating, on the basis of the detected at least one symbol, an interference channel in which a self-interference signal occurs; detecting the self-interference signal; and identifying an FDX transmission section in which an uplink signal is received from the second electronic device and the downlink signal is transmitted simultaneously, and processing transmission of the downlink signal and reception of the uplink signal in the FDX transmission section, wherein the reception of the uplink signal is processed by removing the self-interference signal occurring in the interference channel.

公开(公告)号：US10461970B2

公开(公告)日：2019-10-29

申请号：US15887300

申请日：2018-02-02

Applicant: Electronics and Telecommunications Research Institute

Inventor： Myung Sun Baek ,  Young Su Kim ,  Nam Ho Hur ,  Hyoung Soo Lim ,  Heung Mook Kim

IPC: H04L25/06 ,  H04L27/26 ,  H04L25/03 ,  H04L25/497 ,  H03F1/32 ,  H04B1/04 ,  H04L1/00 ,  H04B10/556

Abstract: A transmitter/receiver for supporting FTN (Faster-than-Nyquist) signaling and a method for the same may be provided. The transmitter for supporting FTN signaling) according to an embodiment of the present disclosure includes a frame input unit providing an input frame obtained by composing a transmission signal in units of a frame; a sequence frame determination unit generating a plurality of scramble sequences, generating a plurality of sequence frames by applying the plurality of scramble sequences to the input frame, and determining at least one sequence frame from the plurality of sequence frames considering a PAPR value of the plurality of sequence frames; and a signal transmission unit for transmitting the sequence frame determined.

公开(公告)号：US10218462B2

公开(公告)日：2019-02-26

申请号：US15459698

申请日：2017-03-15

Applicant: Electronics and Telecommunications Research Institute

Inventor： Myung Sun Baek ,  Sang Woon Kwak ,  Young Su Kim ,  Joung Il Yun ,  Hyoung Soo Lim ,  Nam Ho Hur

IPC: H04B7/08 ,  H04L1/00 ,  H04L1/06 ,  G06F11/14 ,  H04B7/026 ,  H04B7/155 ,  H03M13/00

Abstract: Disclosed is an apparatus and method for supporting cooperative transmission, the apparatus including a controller configured to determine detection bits with respect to a plurality of relay terminals based on channel states between a source terminal and the plurality of relay terminals, the relay terminals configured to detect sub-data corresponding to the detection bits from data when the data is transmitted from the source terminal, an interface configured to receive the sub-data from the relay terminals, respectively, in response to the relay terminals detecting the sub-data, and a restorer configured to restore the data by combining the received sub-data.