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公开(公告)号：US10897277B2
公开(公告)日：2021-01-19
申请号：US16152849
申请日：2018-10-05
Inventor： Myung-Sun Baek , Joon-Young Jung , Heung-Mook Kim
Abstract: Disclosed herein are a method for estimating a self-interference signal based on iterative estimation and an apparatus for the same. The method is configured to transmit two preamble signals from the transmission antenna of one terminal to the reception antenna thereof, to estimate third-order nonlinear distortion, which distorts a self-interference signal, based on a transmission signal and a reception signal for each of the two preamble signals, to update the reception signal by eliminating the third-order nonlinear distortion therefrom, to re-estimate the third-order nonlinear distortion based on the updated reception signal, and to estimate the self-interference signal based on the final third-order nonlinear distortion, which is acquired by repeatedly re-estimating the third-order nonlinear distortion as many times as a preset number of iterations.
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公开(公告)号：US11190333B2
公开(公告)日：2021-11-30
申请号：US16839916
申请日：2020-04-03
Inventor： Myung-Sun Baek , Sang-Jung Ra , Byungjun Bae , Yong Seong Cho , Hyoung Kyu Song , Won-Seok Lee
Abstract: A method and an apparatus for estimating synchronization of a broadcast signal in a time domain using a synchronization estimation signal through steps of: performing a correlation operation using a correlation window on a plurality of synchronization estimation signals separated to a plurality of paths and outputting a plurality of correlated signals; delaying the plurality of correlated signals to output a plurality of delayed signals; and estimating the synchronization using the plurality of delayed signals are provided.
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公开(公告)号：US10892797B2
公开(公告)日：2021-01-12
申请号：US16737760
申请日：2020-01-08
Inventor： Myung-Sun Baek , Jin Hyuk Song , Joon Young Jung , Heung Mook Kim , Eun Hee Hyun
Abstract: An apparatus and a method for processing an uplink signal of cable broadcasting network including: modulating uplink data to be transmitted to a broadcasting station which is located at an end of the cable broadcasting network into a plurality of symbols; performing a correlation-coding on the plurality of symbols; and outputting an analog radio frequency (RF) signal corresponding to the plurality of correlation-coded symbols are provided.
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Patent Agency Ranking
公开(公告)号：US11050494B2
公开(公告)日：2021-06-29
申请号：US16538457
申请日：2019-08-12
Inventor： Myung-Sun Baek , Joon-Young Jung , Dong-Joon Choi , Heung-Mook Kim
IPC: H04L27/06 , H04B17/14 , H04B7/0417 , H04B7/0456
Abstract: Disclosed herein are a signal-multiplexing apparatus and method based on machine learning. The signal-multiplexing method based on machine learning, performed by a signal-multiplexing apparatus based on machine learning, including training a transmitted signal using a machine-learning technique, performing complex mapping to transmit the transmitted signal as multiple signals, receiving the multiple signals and regularizing the multiple signals based on a preset rule corresponding to the machine-learning technique, outputting an estimated value for the transmitted signal by training regularized multiple signals using the machine-learning technique, calculating a difference between the transmitted signal and the estimated value for the transmitted signal, and detecting the transmitted signal from an output value when the difference is less than or equal to a preset value.
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5.发明授权公开(公告)号：US10142140B2
公开(公告)日：2018-11-27
申请号：US15421295
申请日：2017-01-31
Inventor： Joung-Il Yun , Sang-Woon Kwak , Myung-Sun Baek , Hae-Chan Kwon , Hyoung-Soo Lim , Nam-Ho Hur , Nam-Shik Kim , Bi-Woong Chung
IPC: H04L1/00 , H04L27/01 , H04L25/06 , H04L25/03 , H04B1/7107
Abstract: Disclosed herein are an apparatus and method for receiving a signal based on FTN. The apparatus for receiving a signal based on FTN includes an equalizer for creating a Log Likelihood Ratio (LLR) sequence by equalizing an FTN signal sequence sampled at an FTN signaling rate; a deinterleaver for deinterleaving the created LLR sequence; a decoder for decoding the LLR sequence by correcting errors in the deinterleaved LLR sequence; an interleaver for interleaving the decoded LLR sequence and providing the interleaved LLR sequence to the equalizer; and an FTN interference estimation unit for providing the FTN signal sequence, from which an FTN interference sequence is eliminated, to the equalizer, using the interleaved LLR sequence.
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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：US09893918B2
公开(公告)日：2018-02-13
申请号：US15092706
申请日：2016-04-07
Inventor： Joungil Yun , Sangwoon Kwak , Hyoungsoo Lim , Young Su Kim , Myung-Sun Baek , Yun Jeong Song , Namho Hur , Wangrok Oh , Donghoon Kang
CPC classification number: H04L27/2608 , H04B1/04 , H04L25/03834
Abstract: A Faster-Than-Nyquist (FTN)-based transmitting apparatus segments an input data bit string into a plurality of partial bit strings, simultaneously channel-encodes each of the plurality of partial bit strings, simultaneously modulates each of the plurality of channel encoded bit strings to generate a plurality of modulation symbol sequences, and then pulse-shapes and transmits the plurality of modulation symbol sequences at a speed faster than a Nyquist rate.
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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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