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公开(公告)号：US20180191424A1
公开(公告)日：2018-07-05
申请号：US15909481
申请日：2018-03-01
Applicant: SOLiD, INC.
Inventor： Inho JANG , Hyunchae KIM
Abstract: Provided is an interference cancellation relay device. The interference cancellation relay device includes: an interference cancellation unit cancelling an interference signal from an input signal and outputting the input signal from which the interference signal is removed; a gain control unit controlling a gain of an output signal of the interference cancellation unit; and a pre-distortion unit distorting the output signal of the interference cancellation unit, of which the gain is controlled by the gain control unit.
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公开(公告)号：US20170195036A1
公开(公告)日：2017-07-06
申请号：US15395123
申请日：2016-12-30
Applicant: SOLID, INC.
Inventor： Nagwon KWON , Hyunchae KIM
CPC classification number: H04B7/15585 , H04B7/15535 , H04B7/15542 , H04B7/18543 , H04W72/0473 , H04W72/082
Abstract: An interference cancellation repeater including a subtractor configured to subtract an estimated signal from a digital reception signal and output an interference canceled signal; a first power calculator configured to calculate power of the digital reception signal; a second power calculator configured to calculate power of the interference canceled signal; and an attenuation controller configured to compare a power value of the calculated digital reception signal with a power value of the calculated interference canceled signal and determine an attenuation value of the interference canceled signal according to the comparison result.
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3.发明申请METHOD AND DEVICE FOR DETECTING LTE FRAME SYNCHRONIZATION, AND RELAY DEVICE APPLYING THE SAME 审中-公开用于检测LTE帧同步的方法和设备，以及应用它的继电器件公开(公告)号：US20160337998A1
公开(公告)日：2016-11-17
申请号：US15106354
申请日：2014-08-14
Applicant: SOLiD, INC.
Inventor： Hyunchae KIM
CPC classification number: H04W56/0035 , H04B7/155 , H04J11/0069 , H04J2211/005 , H04L5/0007 , H04L27/2628 , H04W56/0005
Abstract: There is provided a device for detecting LTE frame synchronization, including: a CP correlator calculating a correlation of a cyclic prefix (CP) included in each orthogonal frequency division multiplexing (OFDM) symbol of an LTE signal processed digital conversion; a frequency offset compensation unit compensating a frequency offset for a synchronization signal in the LTE signal by using a symbol frequency offset calculated based on the CP correlation; a synchronization signal correlation calculation unit performing a correlation calculation in a time domain with respect to the synchronization signal, of which the frequency offset is compensated, by considering a symbol start timing obtained based on the CP correlation; and a frame synchronization detection unit detecting the frame synchronization of the LTE signal based on a result of the correlation calculation for the synchronization signal.
Abstract translation: 提供了一种用于检测LTE帧同步的装置，包括：CP相关器，其计算包括在LTE信号处理的数字转换的每个正交频分复用（OFDM）符号中的循环前缀（CP）的相关性; 频率偏移补偿单元，其通过使用基于所述CP相关计算的符号频率偏移来补偿所述LTE信号中的同步信号的频率偏移; 同步信号相关计算单元通过考虑基于CP相关获得的符号开始定时，对相对于补偿了频率偏移的同步信号的时域执行相关计算; 以及帧同步检测单元，基于同步信号的相关计算结果来检测LTE信号的帧同步。
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公开(公告)号：US20220271827A1
公开(公告)日：2022-08-25
申请号：US17741737
申请日：2022-05-11
Inventor： Nagwon KWON , Hyunchae KIM , Chonghoon KIM , Seungmo HONG , Sungbin IM
IPC: H04B7/155
Abstract: A method of operating a repeater comprises selecting some of adaptive filter coefficients among a plurality of adaptive filter coefficients of an adaptive filter used for interference cancellation, based on the size of a coefficient, generating a predicted interference signal using the selected adaptive filter coefficients and generating an interference-canceled communication signal from a received signal using the generated predicted interference signal.
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公开(公告)号：US20170195073A1
公开(公告)日：2017-07-06
申请号：US15395240
申请日：2016-12-30
Applicant: SOLiD, INC.
Inventor： Nagwon KWON , Hyunchae KIM
CPC classification number: H04B17/40 , H04B7/155 , H04B17/309 , H04W52/246 , H04W52/46
Abstract: A repeater including an analog attenuator configured to attenuate an analog signal in response to a first control signal; an analog to digital converter (ADC) configured to convert the attenuated analog signal into a digital signal; a digital attenuator configured to attenuate the digital signal in response to a second control signal; and an attenuation controller configured to calculate average power and peak power of the attenuated digital signal, determine an attenuation value for each value of the calculated average power and peak power, and generate at least one of the first and second control signals based on the determined attenuation values.
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Patent Agency Ranking
公开(公告)号：US20170187561A1
公开(公告)日：2017-06-29
申请号：US15391183
申请日：2016-12-27
Applicant: SOLiD, INC.
Inventor： Nagwon KWON , Hyunchae KIM
CPC classification number: H04L27/2623 , H04B7/15 , H04L27/2624 , H04W52/36
Abstract: According to an aspect of the inventive concept, there is provided a crest factor reduction (CFR) core, including: a clipper clipping an input signal; a delay unit delaying the input signal; a first subtractor subtracting the clipped input signal from the delayed input signal; an error shaping filter filtering the subtracted signal for shaping an error which occurs by the clipping of the input signal; a digital filter filtering the input signal for cancelling noise of the input signal; and a second subtractor subtracting the filtered subtracted signal from the filtered input signal.
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公开(公告)号：US20210050909A1
公开(公告)日：2021-02-18
申请号：US16991564
申请日：2020-08-12
Inventor： Nagwon KWON , Hyunchae KIM , Chonghoon KIM , Seungmo HONG , Sungbin IM
IPC: H04B7/155
Abstract: A method of operating a repeater comprises selecting some of adaptive filter coefficients among a plurality of adaptive filter coefficients of an adaptive filter used for interference cancellation, based on the size of a coefficient, generating a predicted interference signal using the selected adaptive filter coefficients and generating an interference-canceled communication signal from a received signal using the generated predicted interference signal.
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公开(公告)号：US20180198540A1
公开(公告)日：2018-07-12
申请号：US15916910
申请日：2018-03-09
Applicant: SOLiD, INC.
Inventor： Nagwon KWON , Hyunchae KIM
IPC: H04B17/40 , H04W52/46 , H04B17/309 , H04W52/24
CPC classification number: H04B17/40 , H04B7/155 , H04B17/309 , H04W52/246 , H04W52/46
Abstract: A repeater including an analog attenuator configured to attenuate an analog signal in response to a first control signal; an analog to digital converter (ADC) configured to convert the attenuated analog signal into a digital signal; a digital attenuator configured to attenuate the digital signal in response to a second control signal; and an attenuation controller configured to calculate average power and peak power of the attenuated digital signal, determine an attenuation value for each value of the calculated average power and peak power, and generate at least one of the first and second control signals based on the determined attenuation values.
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公开(公告)号：US20180026731A1
公开(公告)日：2018-01-25
申请号：US15540639
申请日：2015-12-04
Applicant: SOLiD, INC. , SOLIDSYSTEMS CO., LTD.
Inventor： Hyunchae KIM
IPC: H04B17/318 , H04B7/155
CPC classification number: H04B17/318 , H04B7/15578
Abstract: An interference cancellation repeater according to the inventive concept includes: a first transmission/reception processing unit configured to adjust a gain of a radio frequency (RF) input signal input via a link antenna communicatively coupled to a base station; an interference canceller configured to cancel and output an interference signal from an output signal of the first transmission/reception processing unit; and a gain controller configured to extract a signal with constant magnitude regardless of a change in user traffic from the output signal of the interference canceller, and to adjust the gain of the RF input signal to a predetermined level by controlling the first transmission/reception processing unit based on the extracted signal.
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公开(公告)号：US20180234162A1
公开(公告)日：2018-08-16
申请号：US15540774
申请日：2015-12-21
Applicant: SOLiD, INC. , SOLIDSYSTEMS CO., LTD.
Inventor： Hyunchae KIM
IPC: H04B7/155 , H04B17/318
CPC classification number: H04B7/15585 , H04B7/15507 , H04B7/15578 , H04B17/318 , H04W52/243 , H04W52/343 , Y02D70/1244 , Y02D70/1262 , Y02D70/1264 , Y02D70/446
Abstract: According to an aspect of the inventive concept, there is provided an interference cancellation repeater includes: a signal transceiver configured to cancel an interference signal from an RF input signal and to output an RF output signal from which the interference signal has been canceled; and a controller configured to control a power mode of the signal transceiver by measuring traffic of a first signal in the signal transceiver.
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