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1.发明授权公开(公告)号：US11722355B2
公开(公告)日：2023-08-08
申请号：US17220659
申请日：2021-04-01
Inventor： Jae-Hwui Bae , Young-Su Kim , Dong-Joon Choi , Nam-Ho Hur
CPC classification number: H04L27/3488 , H04J99/00 , H04L1/0071
Abstract: Disclosed herein are an apparatus and method for transmitting and receiving a 4-layer layered-division multiplexing (LDM) signal. An apparatus for transmitting a 4-layer layered-division multiplexing signal includes a layered-division multiplexing modulation unit for generating a 3-layer layered-division multiplexing signal by performing layered-division multiplexing modulation on three layer signals and generating a 4-layer layered-division multiplexing signal by inserting a Pseudo-random Noise (PN) sequence into the 3-layer layered-division multiplexing signal, a pilot insertion unit for inserting a pilot into the 4-layer layered-division multiplexing signal, and a transmission unit for transmitting the 4-layer layered-division multiplexing signal.
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Patent Agency Ranking
公开(公告)号：US11783034B2
公开(公告)日：2023-10-10
申请号：US17100541
申请日：2020-11-20
Inventor： Jung-Tae Kim , Ji-Hyeon Song , Ik-Kyun Kim , Young-Su Kim , Jong-Hyun Kim , Jong-Geun Park , Sang-Min Lee , Jong-Hoon Lee
CPC classification number: G06F21/563 , G06N5/04 , G06N20/00 , G06F2221/033
Abstract: Disclosed herein are an apparatus and method for detecting a malicious script. The apparatus includes one or more processors and executable memory for storing at least one program executed by the one or more processors. The at least one program is configured to extract token-type features, each of which corresponds to a lexical unit, and tree-node-type features of an abstract syntax tree from an input script, to train two learning models to respectively learn two pieces of learning data that are generated in consideration of features extracted respectively from the token-type features and the node-type features as having the highest frequency, and to detect whether the script is a malicious script based on the result of ensemble-based malicious script detection performed for the script, which is acquired using an ensemble detection model generated from the two learning models.
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3.发明申请公开(公告)号：US20210336837A1
公开(公告)日：2021-10-28
申请号：US17220659
申请日：2021-04-01
Inventor： Jae-Hwui Bae , Young-Su Kim , Dong-Joon Choi , Nam-Ho Hur
Abstract: Disclosed herein are an apparatus and method for transmitting and receiving a 4-layer layered-division multiplexing (LDM) signal. An apparatus for transmitting a 4-layer layered-division multiplexing signal includes a layered-division multiplexing modulation unit for generating a 3-layer layered-division multiplexing signal by performing layered-division multiplexing modulation on three layer signals and generating a 4-layer layered-division multiplexing signal by inserting a Pseudo-random Noise (PN) sequence into the 3-layer layered-division multiplexing signal, a pilot insertion unit for inserting a pilot into the 4-layer layered-division multiplexing signal, and a transmission unit for transmitting the 4-layer layered-division multiplexing signal.
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4.发明授权公开(公告)号：US10892924B2
公开(公告)日：2021-01-12
申请号：US16797845
申请日：2020-02-21
Inventor： Jae-Hwui Bae , Sun-Hyoung Kwon , Young-Su Kim , Dong-Joon Choi , Nam-Ho Hur
Abstract: Disclosed herein is a demodulation method of a Layer-Division Multiplexing (LDM) system. The demodulation method may include receiving an LDM modulation signal, restoring a first-layer signal from the LDM modulation signal and remodulating the first-layer signal, restoring and remodulating a second-layer signal by performing cancellation of the amplitude component of the first-layer signal from the LDM modulation signal using signaling information independently of restoration and remodulation of the first-layer signal, and restoring a third-layer signal using the first-layer signal, the second-layer signal, and the LDM modulation signal.
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公开(公告)号：US10129051B2
公开(公告)日：2018-11-13
申请号：US15659453
申请日：2017-07-25
Inventor： Sang-Woon Kwak , Joung-Il Yun , Myung-Sun Baek , Hae-Chan Kwon , Young-Su Kim , Hyoung-Soo Lim , Nam-Ho Hur
Abstract: Disclosed herein are a method and apparatus for iterative interference cancellation and channel estimation in a system based on FTN communication including a pilot. Interference of a pilot symbol on a data symbol is estimated, and the estimated interference is eliminated from a sequence of data symbols. When demodulation and channel decoding are performed on the sequence of data symbols, interference between data symbols and interference of a data symbol on a pilot symbol are estimated. Such estimation is repeatedly performed, and as FTN interference is repeatedly estimated and eliminated, channel estimation performance is improved, and through the improved channel estimation performance, the reception performance of the entire system is improved.
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公开(公告)号：US09762286B2
公开(公告)日：2017-09-12
申请号：US15008268
申请日：2016-01-27
Inventor： Myung-Sun Baek , Hyoungsoo Lim , Sang-Woon Kwak , Young-Su Kim , Yun-Jeong Song , Kyu-Tae Yang , Joungil Yun , Bongho Lee , Jong-Suk Chae , Nam-Ho Hur
CPC classification number: H04B1/713 , H04J11/0023 , H04L5/0012
Abstract: Provided is an apparatus for transmitting a signal based on a non-uniform inter-symbol interference (ISI) pattern, the apparatus that may transmit an output signal generated by modulating an input signal based on a parameter sequence to be used to control an interference pattern and a position of a transmission signal for each symbol using a faster than Nyquist (FTN) scheme.
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