Patents by Inventor Namyoon Lee
Namyoon Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11962436Abstract: Disclosed are a user detection technique, and a method and apparatus for channel estimation in a wireless communication system supporting massive multiple-input multiple-output.Type: GrantFiled: May 14, 2021Date of Patent: April 16, 2024Assignees: Samsung Electronics Co., Ltd., POSTECH RESEARCH AND BUSINESS DEVELOPMENT FOUNDATIONInventors: Namyoon Lee, Hyowon Lee
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Patent number: 11956104Abstract: Millimeter-wave (mmWave) and sub-mmWave technology, apparatuses, and methods that relate to transceivers and receivers for wireless communications are described. The various aspects include an apparatus of a communication device including one or more antennas configured to receive an RF signal and an ADC system. The ADC system includes a 1-bit ADC configured to receive the RF signal, and an ADC controller circuitry configured to measure a number of positive samples in the received RF signal for a plurality of thresholds of the 1-bit ADC, estimate receive signal power associated with the received RF signal based on the measured number of positive samples, determine a direct current (DC) offset in the received RF signal using the estimated received signal power, and adjust the received RF signal based on the determined DC offset.Type: GrantFiled: December 26, 2019Date of Patent: April 9, 2024Assignee: Intel CorporationInventors: Oner Orhan, Hosein Nikopour, Mehnaz Rahman, Ivan Simoes Gaspar, Shilpa Talwar, Stefano Pellerano, Claudio Da Silva, Namyoon Lee, Yo Seb Jeon, Eren Sasoglu
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Publication number: 20230344614Abstract: A communication circuit arrangement includes a signal path circuit to estimate, using a first kernel dimension filter and a first delay tap dimension filter, a first interference signal produced by a first amplifier. The signal path circuit further estimates, using a second kernel dimension filter and a second delay tap dimension filter, a second interference signal produced by a second amplifier. A cancellation circuit of the communication circuit arrangement may subtract a combination of the first interference signal and the second interference signal from a received signal to obtain a filtered signal, and one or more filter adaptation circuits may alternate between a kernel update phase and a delay update phase to update the first kernel dimension filter and the second kernel dimension filter during the kernel update phase, and update the first delay tap dimension filter and the second delay tap dimension filter during the delay update phase.Type: ApplicationFiled: May 4, 2023Publication date: October 26, 2023Inventors: Feng Xue, Yang-Seok Choi, Daniel Schwartz, Shu-Ping Yeh, Namyoon Lee, Venkatesan Nallampatti Ekambaram, Ching-En Lee, Chia-Hsiang Chen
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Patent number: 11671235Abstract: A communication circuit arrangement includes a first kernel dimension filter circuit configured to apply a first kernel dimension filter to a first input signal to estimate a first kernel dimension interference signal from a first amplifier, a second kernel dimension filter circuit configured to apply a second kernel dimension filter to a second input signal to estimate a second kernel dimension interference signal from a second amplifier, a joint delay tap dimension filter configured to apply a joint delay tap dimension filter to a combination of the first kernel dimension interference signal and the second kernel dimension interference signal to obtain an estimated joint interference signal, and a cancelation circuit configured to remove the estimated joint interference signal from a received signal to obtain a clean signal.Type: GrantFiled: September 29, 2016Date of Patent: June 6, 2023Assignee: Apple Inc.Inventors: Feng Xue, Yang-Seok Choi, Daniel Schwartz, Shu-Ping Yeh, Namyoon Lee, Venkatesan Nallampatti Ekambaram, Ching-En Lee, Chia-Hsiang Chen
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Patent number: 11658682Abstract: The inventive concept relates to method for encoding and decoding sparse codes and orthogonal sparse superposition codes. A sparse code encoding method which is to be performed by an encoding apparatus, according to an embodiment of the inventive concept may include selecting an index set that is a part of a code block by using an information bit, and mapping a codeword less than a preset size to the selected index set.Type: GrantFiled: December 21, 2020Date of Patent: May 23, 2023Assignee: POSTECH Research and Business Development FoundationInventor: Namyoon Lee
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Publication number: 20230155624Abstract: A transceiver includes a transmitter up-converting a frequency of input data to transmit data of a first frequency, an orthogonal basis generator receiving the input data from the transmitter to generate an orthogonal basis; and a receiver receiving the orthogonal basis from the orthogonal basis generator and receiving the transmitted data for down-converting a frequency of the received data to a second frequency different from the first frequency. The orthogonal basis generator includes, a multiplier multiplying the input data by a Gaussian characteristic value obtained by extracting a Gaussian characteristic of the data to generate an out of band emission (OOBE) value, and a polynomial block generating the orthogonal basis by using the OOBE value as an input to an Itô-Hermite polynomial.Type: ApplicationFiled: July 12, 2022Publication date: May 18, 2023Applicant: POSTECH Research and Business DevelopmentInventors: Namyoon Lee, Hyowon Lee
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Publication number: 20230106785Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services..Type: ApplicationFiled: February 2, 2021Publication date: April 6, 2023Inventors: Sungnam HONG, Namyoon LEE, Jiwook CHOI
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Publication number: 20220393913Abstract: Millimeter-wave (mmWave) and sub-mmWave technology, apparatuses, and methods that relate to transceivers and receivers for wireless communications are described. The various aspects include an apparatus of a communication device including one or more antennas configured to receive an RF signal and an ADC system. The ADC system includes a 1-bit ADC configured to receive the RF signal, and an ADC controller circuitry configured to measure a number of positive samples in the received RF signal for a plurality of thresholds of the 1-bit ADC, estimate receive signal power associated with the received RF signal based on the measured number of positive samples, determine a direct current(DC) offset in the received RF signal using the estimated received signal power, and adjust the received RF signal based on the determined DC offset.Type: ApplicationFiled: December 26, 2019Publication date: December 8, 2022Inventors: Oner Orhan, Hosein Nikopour, Mehnaz Rahman, Ivan Simoes Gaspar, Shilpa Talwar, Stefano Pellerano, Claudio Da Silva, Namyoon Lee, Yo Seb Jeon, Eren Sasoglu
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Publication number: 20210351791Abstract: The inventive concept relates to method for encoding and decoding sparse codes and orthogonal sparse superposition codes. A sparse code encoding method which is to be performed by an encoding apparatus, according to an embodiment of the inventive concept may include selecting an index set that is a part of a code block by using an information bit, and mapping a codeword less than a preset size to the selected index set.Type: ApplicationFiled: December 21, 2020Publication date: November 11, 2021Inventor: Namyoon LEE
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Patent number: 11108514Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology. The disclosure provides a codebook determination method of a terminal. The codebook determination method includes modulating input bits to generate a symbol vector using index information, determining a codebook based on information on subcarriers and information on modulation, determining a unitary matrix to be assigned to the terminal based on a codeword of the determined codebook, precoding the symbol vector based on the codebook and the unitary matrix, and transmitting the symbol vector to a base station on the subcarriers.Type: GrantFiled: June 11, 2019Date of Patent: August 31, 2021Assignees: Samsung Electronics Co., Ltd., Postech Academy-Industry FoundationInventors: Jongbu Lim, Namyoon Lee, Jiwook Choi
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Patent number: 10880148Abstract: The disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as long term evolution (LTE). According to various embodiments, a transmission device in a wireless environment may include a transceiver, and a processor operatively coupled to the transceiver. The processor may be configured to generate a codeword related to transmission data, generate symbols from the codeword by using a plurality of transmission symbol vectors determined using a linear combination of vectors corresponding to respective rows of a lattice generation matrix, and transmit a signal generated based on the symbols via the transceiver.Type: GrantFiled: August 17, 2018Date of Patent: December 29, 2020Assignees: Samsung Electronics Co., Ltd., Postech Academy-Industry FoundationInventors: Jongbu Lim, Namyoon Lee, Jiwook Choi, Chanhong Kim, Yeohun Yun, Sungnam Hong
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Publication number: 20200388935Abstract: A method for transmitting and receiving data through an antenna array in a wireless communication system is provided. The method of operating a first device includes identifying a plurality of subarrays formed from a planar lattice array, and transmitting symbols to a second device through the plurality of subarrays, wherein the subarrays form a plurality of Uniform Circulant Arrays (UCAs) from the planar lattice antenna array, and wherein antenna elements allocated to each of the subarrays are located at equal intervals to have an equal distance from the center of the planar lattice array.Type: ApplicationFiled: June 5, 2020Publication date: December 10, 2020Inventors: Namyoon LEE, Heedong DO
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Patent number: 10840983Abstract: The disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as long term evolution (LTE). An operating method of a base station in a wireless communication system is provided. The operating method includes estimating a channel for each of a plurality of terminals based on reference signals received from the plurality of the terminals, determining a beamforming vector matrix for each of the plurality of the terminals by considering scheduling and power allocation information based on the estimated channels, and transmitting data to at least one of the plurality of the terminals using the determined beamforming vector matrix.Type: GrantFiled: June 14, 2019Date of Patent: November 17, 2020Assignees: Samsung Electronics Co., Ltd., POSTECH ACADEMY-INDUSTRY FOUNDATIONInventors: Younghyun Jeon, Namyoon Lee, Eunyong Kim, Chulhee Jang, Jiwook Choi, Yunseo Nam
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Publication number: 20200220764Abstract: The disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as long term evolution (LTE). According to various embodiments, a transmission device in a wireless environment may include a transceiver, and a processor operatively coupled to the transceiver. The processor may be configured to generate a codeword related to transmission data, generate symbols from the codeword by using a plurality of transmission symbol vectors determined using a linear combination of vectors corresponding to respective rows of a lattice generation matrix, and transmit a signal generated based on the symbols via the transceiver.Type: ApplicationFiled: August 17, 2018Publication date: July 9, 2020Inventors: Jongbu LIM, Namyoon LEE, Jiwook CHOI, Chanhong KIM, Yeohun YUN, Sungnam HONG
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Patent number: 10708019Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system, such as long term evolution (LTE). To support multiple access, a method for operating a terminal is provided. The method includes sending at least one first reference signal over a first resource which supports orthogonal multiple access with at least one other terminal, sending at least one second reference signal over a second resource which supports non-orthogonal multiple access (NOMA) with the at least one other terminal, and sending a data signal according to the NOMA with the at least one other terminal.Type: GrantFiled: February 7, 2018Date of Patent: July 7, 2020Assignees: Samsung Electronics Co., Ltd., POSTECH ACADEMY-INDUSTRY FOUNDATIONInventors: Jongbu Lim, Namyoon Lee, Yo-Seb Jeon, Chanhong Kim, Yeohun Yun, Sungnam Hong
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Publication number: 20190386727Abstract: The disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as long term evolution (LTE). An operating method of a base station in a wireless communication system is provided. The operating method includes estimating a channel for each of a plurality of terminals based on reference signals received from the plurality of the terminals, determining a beamforming vector matrix for each of the plurality of the terminals by considering scheduling and power allocation information based on the estimated channels, and transmitting data to at least one of the plurality of the terminals using the determined beamforming vector matrix.Type: ApplicationFiled: June 14, 2019Publication date: December 19, 2019Inventors: Younghyun JEON, Namyoon LEE, Eunyong KIM, Chulhee JANG, Jiwook CHOI, Yunseo NAM
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Publication number: 20190379498Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology. The disclosure provides a codebook determination method of a terminal. The codebook determination method includes modulating input bits to generate a symbol vector using index information, determining a codebook based on information on subcarriers and information on modulation, determining a unitary matrix to be assigned to the terminal based on a codeword of the determined codebook, precoding the symbol vector based on the codebook and the unitary matrix, and transmitting the symbol vector to a base station on the subcarriers.Type: ApplicationFiled: June 11, 2019Publication date: December 12, 2019Inventors: Jongbu LIM, Namyoon LEE, Jiwook CHOI
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Publication number: 20190229884Abstract: A communication circuit arrangement includes a first kernel dimension filter circuit configured to apply a first kernel dimension filter to a first input signal to estimate a first kernel dimension interference signal from a first amplifier, a second kernel dimension filter circuit configured to apply a second kernel dimension filter to a second input signal to estimate a second kernel dimension interference signal from a second amplifier, a joint delay tap dimension filter configured to apply a joint delay tap dimension filter to a combination of the first kernel dimension interference signal and the second kernel dimension interference signal to obtain an estimated joint interference signal, and a cancelation circuit configured to remove the estimated joint interference signal from a received signal to obtain a clean signal.Type: ApplicationFiled: September 29, 2016Publication date: July 25, 2019Inventors: Feng XUE, Yang-Seok CHOI, Daniel SCHWARTZ, Shu-Ping YEH, Namyoon LEE, Venkatesan NALLAMPATTI EKAMBARAM, Ching-En LEE, Chia-Hsiang CHEN
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Patent number: 10142084Abstract: This disclosure describes methods and devices related to self-interference cancellation. A device is disclosed comprising: at least one memory storing computer-executable instructions; and at least one processor configured to access the at least one memory, wherein the at least one processor may be configured to execute the computer-executable instructions to cause to send at least one first symbol sequence at least twice on a first transmit chain and at least one second symbol sequence twice on a second transmit chain. The processor may be configured to execute the computer-executable instructions to determine at least one third symbol sequence at least twice on a first receive chain and at least one fourth symbol sequence at least twice on a second receive chain.Type: GrantFiled: July 1, 2016Date of Patent: November 27, 2018Assignee: Intel CorporationInventors: Namyoon Lee, Yang-Seok Choi
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Patent number: 10142996Abstract: An access point in a random access wireless network is presented, which performs medium access control for transmissions from a plurality of stations to the access point using a carrier sense multiple access protocol. The CSMA protocol is based on the access point having a variable sensitivity level to detecting other transmissions on a wireless channel in order to avoid data collisions. In a dense network environment, the sensitivity level can be reduced to avoid detecting transmissions to other access points, and thus improve area efficiency.Type: GrantFiled: July 3, 2015Date of Patent: November 27, 2018Assignee: Nokia Technologies OyInventors: Sarabjot Singh, Sayantan Choudhury, Enrico-Henrik Rantala, Namyoon Lee, Esa Juhani Tuomaala