Patents by Inventor Yingqun Yu
Yingqun Yu 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: 11936407Abstract: A communication system provides reliable wideband communications with reduced power consumption in a user equipment (UE) receiver. A UE may include receiver circuitry to receive a radio frequency (RF) signal from a wireless network and output an analog baseband signal. The RF signal includes M copies of a duplicated signal in a frequency domain. The analog baseband signal includes the M copies of the duplicated signal uniformly offset from one another in the frequency domain by a bandwidth F and including a gap between adjacent copies. The UE further includes an anti-aliasing analog filter an analog to digital converter (ADC). The ADC samples an output of the anti-aliasing analog filter at a sampling frequency selected to obtain a digital baseband signal comprising a combined digital copy of the M copies of the duplicated signal folded over each other.Type: GrantFiled: October 15, 2020Date of Patent: March 19, 2024Assignee: APPLE INC.Inventors: Weidong Yang, Chunhai Yao, Chunxuan Ye, Dawei Zhang, Haitong Sun, Hong He, Huaning Niu, Jie Cui, Manasa Raghavan, Oghenekome Oteri, Seyed Ali Akbar Fakoorian, Sigen Ye, Wei Zeng, Yang Tang, Yingqun Yu, Yushu Zhang
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Publication number: 20240022266Abstract: A communication system provides reliable wideband communications with reduced power consumption in a user equipment (UE) receiver. A UE may include receiver circuitry to receive a radio frequency (RF) signal from a wireless network and output an analog baseband signal. The RF signal includes M copies of a duplicated signal in a frequency domain. The analog baseband signal includes the M copies of the duplicated signal uniformly offset from one another in the frequency domain by a bandwidth F and including a gap between adjacent copies. The UE further includes an anti-aliasing analog filter an analog to digital converter (ADC). The ADC samples an output of the anti-aliasing analog filter at a sampling frequency selected to obtain a digital baseband signal comprising a combined digital copy of the M copies of the duplicated signal folded over each other.Type: ApplicationFiled: September 28, 2023Publication date: January 18, 2024Inventors: Weidong YANG, Chunhai YAO, Chunxuan YE, Dawei ZHANG, Haitong SUN, Hong HE, Huaning NIU, Jie CUI, Manasa RAGHAVAN, Oghenekome OTERI, Seyed Ali Akbar FAKOORIAN, Sigen YE, Wei ZENG, Yang TANG, Yingqun YU, Yushu ZHANG
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Publication number: 20220311457Abstract: A communication system provides reliable wideband communications with reduced. power consumption in a user equipment (UE) receiver. A UE may include receiver circuitry to receive a radio frequency (RF) signal from a wireless network and output an analog baseband signal. The RF signal includes M copies of a duplicated signal in a frequency domain. The analog baseband signal includes the M copies of the duplicated signal uniformly offset from one another in the frequency domain by a bandwidth F and including a gap between adjacent copies. The UE further includes an anti-aliasing analog filter an analog to digital converter (ADC). The ADC samples an output of the anti-aliasing analog filter at a sampling frequency selected to obtain a digital baseband signal comprising a combined digital copy of the M copies of the duplicated signal folded over each other.Type: ApplicationFiled: October 15, 2020Publication date: September 29, 2022Inventors: Weidong YANG, Chunhai YAO, Chunxuan YE, Dawei ZHANG, Haitong SUN, Hong HE, Huaning NIU, Jie CUI, Manasa RAGHAVAN, Oghenekome OTERI, Seyed Ali Akbar FAKOORIAN, Sigen YE, Wei ZENG, Yang TANG, Yingqun YU, Yushu ZHANG
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Patent number: 9578600Abstract: A method and an apparatus are provided for determining whether an enhanced physical downlink control channel (ePDCCH) transmission exists for a user equipment (UE) in a subframe. The UE receives a transmission on physical downlink control channel (PDCCH) resources of the subframe. Downlink control information (DCI) is extracted from the PDCCH resources. The DCI includes at least one bit indicating whether the ePDCCH transmission exists for the UE in the subframe. The UE determines whether the ePDCCH transmission exists using the at least one bit. Additional symbols of the subframe are buffered and decoded when the ePDCCH transmission exists.Type: GrantFiled: December 9, 2014Date of Patent: February 21, 2017Assignee: Samsung Electronics Co., LtdInventors: Linbo Li, Jaber Borran, Yingqun Yu, Inyup Kang
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Patent number: 9537678Abstract: Methods, apparatuses, and systems for improved channel estimation in an Orthogonal Frequency Division Multiplexing (OFDM) system are discussed. In one example discussed herein, joint two-dimensional Minimum Mean-Square Error (2D-MMSE) channel estimation is performed on any Resource Element (REs) containing a reference signal in a Resource Block (RB), one-dimensional Minimum Mean-Square Error (1D-MMSE) channel estimation is performed in the frequency domain on each OFDM symbol in the RB, and then channel estimation is performed in the time domain on each frequency sub-carrier in the RB. In another example discussed herein, Power Delay Profiles (PDPs) and/or frequency correlations are calculated using minimax optimization and then stored in a Look-Up Table (LUT) indexed by estimated Signal to Noise Ratio (SNR) and the estimated maximum delay spread. A portable device could use such an LUT in MMSE calculations.Type: GrantFiled: October 21, 2014Date of Patent: January 3, 2017Assignee: Samsung Electronics Co., LtdInventors: Jungwon Lee, Yingqun Yu, Sungsoo Kim, CheolHee Park
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Patent number: 9526016Abstract: A computing system includes: an inter-device interface configured to communicate receiver signal corresponding to serving signal contemporaneous with interference signal from an interference source at an interference-aware receiver; a communication unit, coupled to the inter-device interface, configured to: determine a serving-interference metric for describing capability of the interference-aware receiver associated with serving communication capacity and interference communication capacity, and generating feedback signal including the serving-interference metric for communicating the feedback signal to a node device.Type: GrantFiled: January 30, 2015Date of Patent: December 20, 2016Assignee: Samsung Electronics Co., Ltd.Inventors: Jungwon Lee, Jung Hyun Bae, Yingqun Yu
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Wireless communication system with interference mitigation mechanism and method of operation thereof
Patent number: 9124397Abstract: A wireless communication system includes: a communication interface configured to receive a desired input signal and an interference input signal; and a control module, coupled to the communication interface, configured to calculate a capacity region to maximize a first R1 reference for the desired input signal by removing the interference input signal.Type: GrantFiled: May 3, 2013Date of Patent: September 1, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Jungwon Lee, Jung Hyun Bae, Yingqun Yu, Tiangao Gou, Inyup Kang -
Publication number: 20150236734Abstract: A computing system includes: an inter-device interface configured to communicate receiver signal corresponding to serving signal contemporaneous with interference signal from an interference source at an interference-aware receiver; a communication unit, coupled to the inter-device interface, configured to: determine a serving-interference metric for describing capability of the interference-aware receiver associated with serving communication capacity and interference communication capacity, and generating feedback signal including the serving-interference metric for communicating the feedback signal to a node device.Type: ApplicationFiled: January 30, 2015Publication date: August 20, 2015Inventors: Jungwon Lee, Jung Hyun Bae, Yingqun Yu
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Publication number: 20150229493Abstract: Methods, apparatuses, and systems for improved channel estimation in an Orthogonal Frequency Division Multiplexing (OFDM) system are discussed. In one example discussed herein, joint two-dimensional Minimum Mean-Square Error (2D-MMSE) channel estimation is performed on any Resource Element (REs) containing a reference signal in a Resource Block (RB), one-dimensional Minimum Mean-Square Error (1D-MMSE) channel estimation is performed in the frequency domain on each OFDM symbol in the RB, and then channel estimation is performed in the time domain on each frequency sub-carrier in the RB. In another example discussed herein, Power Delay Profiles (PDPs) and/or frequency correlations are calculated using minimax optimization and then stored in a Look-Up Table (LUT) indexed by estimated Signal to Noise Ratio (SNR) and the estimated maximum delay spread. A portable device could use such an LUT in MMSE calculations.Type: ApplicationFiled: October 21, 2014Publication date: August 13, 2015Inventors: Jungwon LEE, Yingqun YU, Sungsoo KIM, CheolHee LEE
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Publication number: 20150230173Abstract: A method and an apparatus are provided for determining whether an enhanced physical downlink control channel (ePDCCH) transmission exists for a user equipment (UE) in a subframe. The UE receives a transmission on physical downlink control channel (PDCCH) resources of the subframe. Downlink control information (DCI) is extracted from the PDCCH resources. The DCI includes at least one bit indicating whether the ePDCCH transmission exists for the UE in the subframe. The UE determines whether the ePDCCH transmission exists using the at least one bit. Additional symbols of the subframe are buffered and decoded when the ePDCCH transmission exists.Type: ApplicationFiled: December 9, 2014Publication date: August 13, 2015Inventors: Linbo LI, Jaber BORRAN, Yingqun YU, Inyup KANG
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Patent number: 8995498Abstract: An apparatus and method for a two-stage linear/nonlinear interference cancellation comprising processing a receive signal to produce a first descrambled signal; and processing the first descrambled signal to produce a detected signal. In one aspect, a first interference canceller module is used for processing the received signal and a second interference canceller module is used for processing the first descrambled signal. In one aspect, the first interference canceller is a linear interference canceller (IC) and the second interference canceller is a linear/nonlinear interference canceller (IC).Type: GrantFiled: October 18, 2010Date of Patent: March 31, 2015Assignee: QUALCOMM IncorporatedInventors: Yingqun Yu, Farrokh Abrishamkar, Wenjun Li, Andrew K. Kan
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Patent number: 8934588Abstract: A method of operation of a wireless communication system includes: tuning a receiver front end for receiving a radio-frequency signal; correcting, with an in-phase/quadrature (I/Q) compensation module, an I/Q imbalance from the receiver front end including estimating by a linear minimum mean-square error (LMMSE) module; and processing by a base band receiver for digitizing an output of the I/Q compensation module for generating a receiver data.Type: GrantFiled: February 5, 2013Date of Patent: January 13, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Yingqun Yu, Heejin Roh, Vladislav Sorokine, Jungwon Lee, Inyup Kang
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Patent number: 8879657Abstract: A communication system includes: a covariance module configured to calculate a joint-covariance based on a receiver signal for communicating a communication content in a transmitter signal with an interference signal using subcarriers based on a space-frequency block-coding scheme; a preparation module, coupled to the covariance module, configured to generate a joint-whitener with a control unit based on the joint-covariance for randomizing the interference signal; a joint whitening module, coupled to the preparation module, configured to generate a joint-whitening output based on the receiver signal and the joint-whitener; a message processing module, coupled to the joint whitening module, configured to determine a joint-estimation feedback based on the joint-whitening output; and a cancellation module, coupled to the message processing module, configured to cancel the joint-estimation feedback from the receiver signal for communicating the communication content with a device.Type: GrantFiled: May 16, 2013Date of Patent: November 4, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Yingqun Yu, Jungwon Lee
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WIRELESS COMMUNICATION SYSTEM WITH INTERFERENCE MITIGATION MECHANISM AND METHOD OF OPERATION THEREOF
Publication number: 20140274092Abstract: A wireless communication system includes: a communication interface configured to receive a desired input signal and an interference input signal; and a control module, coupled to the communication interface, configured to calculate a capacity region to maximize a first R1 reference for the desired input signal by removing the interference input signal.Type: ApplicationFiled: May 3, 2013Publication date: September 18, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jungwon Lee, Jung Hyun Bae, Yingqun Yu, Tiangao Gou, Inyup Kang -
Publication number: 20140219402Abstract: A method of operation of a wireless communication system includes: tuning a receiver front end for receiving a radio-frequency signal; correcting, with an in-phase/quadrature (I/Q) compensation module, an I/Q imbalance from the receiver front end including estimating by a linear minimum mean-square error (LMMSE) module; and processing by a base band receiver for digitizing an output of the I/Q compensation module for generating a receiver data.Type: ApplicationFiled: February 5, 2013Publication date: August 7, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yingqun Yu, Heejin Roh, Vladislav Sorokine, Jungwon Lee, Inyup Kang
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Publication number: 20140133587Abstract: A communication system includes: a signal analysis module configured to receive a receiver signal for communicating a transmitter signal with an interference signal; a covariance module, coupled to the signal analysis module, configured to calculate a joint-covariance corresponding to a communication subcarrier data and a further subcarrier data within the receiver signal; a preparation module, coupled to the covariance module, configured to generate a joint-whitener based on the joint-covariance for randomizing the interference signal; and a joint whitening module, coupled to the preparation module, configured to generate a joint-whitened data based on the receiver signal and the joint-whitener for communicating with a device.Type: ApplicationFiled: May 16, 2013Publication date: May 15, 2014Applicant: Samsung Electronics Co., Ltd.Inventors: Yingqun Yu, Jungwon Lee
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Publication number: 20140072067Abstract: A communication system includes: a covariance module configured to calculate a joint-covariance based on a receiver signal for communicating a communication content in a transmitter signal with an interference signal using subcarriers based on a space-frequency block-coding scheme; a preparation module, coupled to the covariance module, configured to generate a joint-whitener with a control unit based on the joint-covariance for randomizing the interference signal; a joint whitening module, coupled to the preparation module, configured to generate a joint-whitening output based on the receiver signal and the joint-whitener; a message processing module, coupled to the joint whitening module, configured to determine a joint-estimation feedback based on the joint-whitening output; and a cancellation module, coupled to the message processing module, configured to cancel the joint-estimation feedback from the receiver signal for communicating the communication content with a device.Type: ApplicationFiled: May 16, 2013Publication date: March 13, 2014Applicant: Samsung Electronics Co., Ltd.Inventors: Yingqun Yu, Jungwon Lee
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Patent number: 8665971Abstract: An apparatus and method for channel estimation comprising obtaining a response matrix G(l) using Q quantity pilots; constructing a sensing matrix Wsensing based on K quantity tones, L quantity symbols and P quantity multipaths; and using compressive sensing channel estimation to determine an equivalent channel matrix Gp(i) based on the response matrix G(l) and the sensing matrix Wsensing.Type: GrantFiled: November 19, 2010Date of Patent: March 4, 2014Assignee: QUALCOMM, IncorporatedInventors: Farrokh Abrishamkar, Ori Shental, Ni-Chun Wang, Yingqun Yu
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Patent number: 8644402Abstract: An apparatus and method for compressive sensing tap identification for channel estimation comprising identifying a set of significant taps in the time domain; representing a time-flat channel response using a Taylor series expansion with the set of significant taps; converting the time-flat channel response to a vectorized channel response; transforming the vectorized channel response to a compressive sensing (CS) polynomial frequency response; aggregating the CS polynomial frequency response into a stacked frequency response; converting the stacked frequency response into a measured pilot frequency response; estimating a channel parameter vector based on the measured pilot frequency response; and generating a reconstructed channel response from the channel parameter vector.Type: GrantFiled: November 19, 2010Date of Patent: February 4, 2014Assignee: QUALCOMM, IncorporatedInventors: Farrokh Abrishamkar, Ni-Chun Wang, Ori Shental, Yingqun Yu
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Patent number: 8615030Abstract: Systems and methods for multi-user detection are provided. In one aspect of the disclosure, an apparatus is provided. The apparatus comprises a processing unit configured to process a plurality of received chips into a plurality of received symbols for a plurality of users. The apparatus further comprises a computation unit configured to compute a multi-user matrix relating a plurality of user symbols for the plurality of users to the plurality of received symbols and a detection unit configured to detect the plurality of user symbols for the plurality of users using the computed multi-user matrix and the plurality of received symbols.Type: GrantFiled: May 4, 2009Date of Patent: December 24, 2013Assignee: Qualcomm IncorporatedInventors: Farrokh Abrishamkar, Yingqun Yu, Michael McCloud, Divaydeep Sikri