Patents by Inventor Jae-Yeun Yun
Jae-Yeun Yun 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: 8687675Abstract: Disclosed is a data transmission/reception method and system for minimizing intercarrier interference (ICI) in a communication system using a multicarrier. The data transmission method by a transmitter includes grouping transmission signals in units of a predetermined number of transmission signals when the transmitter has received the transmission signals, multiplying each group of the transmission signals by a transmission coding matrix, and transmitting the transmission signals multiplied by the transmission coding matrix to a receiver.Type: GrantFiled: September 5, 2007Date of Patent: April 1, 2014Assignees: Samsung Electronics Co., Ltd, Korea Advanced Institute of Science & Technology (KAIST)Inventors: Tak-Ki Yu, Myeon-Kyun Cho, Dong-Ho Kim, Jae-Yeun Yun, Yong-Hoon Lee, Sae-Young Chung, Young-Seok Oh
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Patent number: 8351531Abstract: An apparatus and a method for canceling interference using a space-frequency block coding in a multi-antenna system. The method includes confirming a code for coding to minimize a Pairwise Error Probability (PEP) of a transmit signal of which the PEP is maximized according to a time variation; and coding the transmit signal with the code and transmitting the coded signal via at least two antennas. Accordingly, the interference cancellation can be accomplished while lowering the complexity of the receiver without degrading the spectral efficiency.Type: GrantFiled: June 25, 2008Date of Patent: January 8, 2013Assignees: Samsung Electronics Co., Ltd., Korea Advanced Institute of Science and TechnologyInventors: Tak-Ki Yu, Yung-Soo Kim, Myeon-Kyun Cho, Jae-Yeun Yun, Yong-Hoon Lee, Jin-Gon Joung, Won-Yong Shin
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Patent number: 7907913Abstract: An apparatus and method for determining a beamforming vector in a codebook-based transmission beamforming system are provided. In a feedback method for a receiver in a codebook-based transmission beamforming system, forthcoming channel values for a forthcoming period are generated using M present and previous channel estimates. Effective channel gains for all transmission beamforming vectors included in a codebook are calculated using the forthcoming channel values. A codebook index corresponding to the maximum effective channel gains is fed back to a transmitter.Type: GrantFiled: February 5, 2007Date of Patent: March 15, 2011Assignees: Korea Advanced Institute of Science and Technology (KAIST), Samsung Electronics Co., LtdInventors: Jong-Hyeuk Lee, Myeon-Kyun Cho, Seung-Hoon Nam, Jae-Yeun Yun, Yong-Hoon Lee, Sae-Young Chung, Jihoon Choi
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Publication number: 20090003416Abstract: An apparatus and a method for canceling interference using a space-frequency block coding in a multi-antenna system. The method includes confirming a code for coding to minimize a Pairwise Error Probability (PEP) of a transmit signal of which the PEP is maximized according to a time variation; and coding the transmit signal with the code and transmitting the coded signal via at least two antennas. Accordingly, the interference cancellation can be accomplished while lowering the complexity of the receiver without degrading the spectral efficiency.Type: ApplicationFiled: June 25, 2008Publication date: January 1, 2009Applicants: Samsung Electronics Co., Ltd., Korea Advanced Institute of Science and TechnologyInventors: Tak-Ki Yu, Yung-Soo Kim, Myeon-Kyun Cho, Jae-Yeun Yun, Yong-Hoon Lee, Jin-Gon Joung, Won-Yong Shin
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Patent number: 7433419Abstract: In the ICI cancellation method for OFDM communication system, a receiver performs channel estimation using pilot subcarriers included in transmission signals transmitted from at least one transmitter. The transmitter generates the transmission signal in which pilot subcarriers and data subcarriers are regularly arranged, performs preceding on the transmission signal, modulates the pre-coded transmission signal into an OFDM symbol, and transmits the OFDM symbol. The receiver receives the OFDM symbol; demodulates the OFDM symbol, detects the pilot subcarriers from a demodulated signal, estimates channels using the pilot subcarriers, and restores the transmission signal using the estimated channels.Type: GrantFiled: October 26, 2004Date of Patent: October 7, 2008Assignees: Samsung Electronics Co., Ltd., Korea Advanced Institute of Science and TechnologyInventors: Jae-Yeun Yun, Yong-Hoon Lee, Eung-Sun Kim, Jong-Hyeuk Lee, Ho-Jin Kim, Chan-Soo Hwang, Seung-Hoon Nam
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Publication number: 20080240268Abstract: Disclosed is a data transmission/reception method and system for minimizing intercarrier interference (ICI) in a communication system using a multicarrier. The data transmission method by a transmitter includes grouping transmission signals in units of a predetermined number of transmission signals when the transmitter has received the transmission signals, multiplying each group of the transmission signals by a transmission coding matrix, and transmitting the transmission signals multiplied by the transmission coding matrix to a receiver.Type: ApplicationFiled: September 5, 2007Publication date: October 2, 2008Applicants: SAMSUNG ELECTRONICS CO., LTD., KOREA ADVANCED INSTITUTE OFSCIENCE AND TECHNOLOGY (KAIST)Inventors: Tak-Ki Yu, Myeon-Kyun Cho, Dong-Ho Kim, Jae-Yeun Yun, Yong-Hoon Lee, Sae-Young Chung, Young-Seok Oh
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Publication number: 20070206626Abstract: An apparatus and method for determining a beamforming vector in a codebook-based transmission beamforming system are provided. In a feedback method for a receiver in a codebook-based transmission beamforming system, forthcoming channel values for a forthcoming period are generated using M present and previous channel estimates. Effective channel gains for all transmission beamforming vectors included in a codebook are calculated using the forthcoming channel values. A codebook index corresponding to the maximum effective channel gains is fed back to a transmitter.Type: ApplicationFiled: February 5, 2007Publication date: September 6, 2007Applicants: SAMSUNG ELECTRONICS CO., LTD., Korea Advanced Institute of Science and TechnologyInventors: Jong-Hyeuk Lee, Myeon-Kyun Cho, Seung-Hoon Nam, Jae-Yeun Yun, Yong-Hoon Lee, Sae-Young Chung, Jihoon Choi
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Publication number: 20060140217Abstract: Disclosed is a method for adaptively allocating frequency resources in a communication system using an orthogonal frequency division multiple access scheme. The method for allocating frequency resources in the communication system that includes a plurality of cells using an identical frequency band includes the steps of dividing a frequency band used in the communication system into sub-frequency bands corresponding to a number of cells, and allocating one of the sub-frequency bands to each of mobile subscriber stations exiting in the cells according to positions of the mobile subscriber stations, thereby increasing the degree of the freedom for frequency resource allocation and minimizing ICI.Type: ApplicationFiled: November 30, 2005Publication date: June 29, 2006Applicants: SAMSUNG ELECTRONICS CO., LTD., Korea Advanced Institute of Science and Technology (KAIST)Inventors: Young-Ho Jung, Jae-Hak Chung, Woo-Seok Nam, Jae-Yeun Yun, Yong-Hoon Lee
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Publication number: 20060018412Abstract: Disclosed is a method for estimating a frequency offset in a mobile communication system that divides a predetermined frequency band by a time division scheme to transmit data signals or divides an entire frequency band into a plurality of sub-frequency bands to transmit the data signals. The method includes the steps of modeling a fast fading channel by one of a linear equation and a polynomial equation; and applying the model to a variable for the channel after performing the modeling and estimating the channel and the frequency offset based on a joint maximum likelihood using a training sequence.Type: ApplicationFiled: July 22, 2005Publication date: January 26, 2006Applicants: SAMSUNG ELECTRONICS CO., LTD., Korea Advanced Institute of Science and Technology (KAIST)Inventors: Young-Ho Jung, Jae-Hak Chung, Jae-Yeol Kim, Jae-Yeun Yun, Young-Uhk Kim, Yong-Hoon Lee, Won-Yong Shin
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Publication number: 20060018365Abstract: A method of transmitting a signal by using an Adaptive Modulation and Coding scheme in a Frequency Hopping-Orthogonal Frequency Division Multiplexing Access communication system capable of dividing total frequency bands into a plurality of sub-carrier bands and including a plurality of sub-channels, which are sets of predetermined sub-carrier bands, and a plurality of cells. The method includes the steps of allocating a predetermined number of sub-channels as AMC sub-channels per each cell matching with predetermined conditions in order to apply the AMC scheme to the AMC sub-channels, and allocating remaining sub-channels except for the AMC sub-channels as FH-OFDMA sub-channels in order to apply an FH-OFDMA scheme to the FH-OFDMA sub-channels.Type: ApplicationFiled: July 22, 2005Publication date: January 26, 2006Applicants: SAMSUNG ELECTRONICS CO., LTD., Korea Advanced Institute of Science and Technology (KAIST)Inventors: Young-Ho Jung, Chan-Soo Hwang, Yong-Hoon Lee, Kyung-Min Kim, Jae-Yeun Yun, Won-Yong Shin, Jin-Gon Joung, Woo-Hyuk Chang, Woo-Seok Nam
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Publication number: 20050147176Abstract: In the ICI cancellation method for OFDM communication system, a receiver performs channel estimation using pilot subcarriers included in transmission signals transmitted from at least one transmitter. The transmitter generates the transmission signal in which pilot subcarriers and data subcarriers are regularly arranged, performs preceding on the transmission signal, modulates the pre-coded transmission signal into an OFDM symbol, and transmits the OFDM symbol. The receiver receives the OFDM symbol; demodulates the OFDM symbol, detects the pilot subcarriers from a demodulated signal, estimates channels using the pilot subcarriers, and restores the transmission signal using the estimated channels.Type: ApplicationFiled: October 26, 2004Publication date: July 7, 2005Applicants: SAMSUNG ELECTRONICS CO., LTD, KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY (KAIST)Inventors: Jae-Yeun Yun, Yong-Hoon Lee, Eung-Sun Kim, Jong-Hyeuk Lee, Ho-Jin Kim, Chan-Soo Hwang, Seung-Hoon Nam