Patents by Inventor Qinghe Du
Qinghe Du 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: 11456818Abstract: The invention belongs to the field of low-power consumption Bluetooth technology in wireless communication, in particular to a method for improving the sensitivity of the receiver in a low-power consumption Bluetooth system. The method of the invention is to introduce a deinterleaver between the symbol pattern mapper and GFSK modulator of the transmitting terminal under the low-power consumption Bluetooth coding mode, which is used to perform additional processing on the bitstream data and then perform modulation; then, due to the introduction of interleaving, Turbo iterative processing of demodulation and decoding can be performed at the receiving terminal; the receiving terminal comprises a Turbo iterative demodulator and decoder, which is used to model the low-power consumption Bluetooth GFSK modulator and convolutional coder into finite state machines, and then combine the deinterleaver to use the BCJR algorithm for iterative demodulation and decoding.Type: GrantFiled: January 25, 2021Date of Patent: September 27, 2022Assignee: FUDAN UNIVERSITYInventors: Yi Jiang, Jie Yang, Qinghe Du, Rui Wang, Wei Zhang, Fengjie Li
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Publication number: 20220239404Abstract: The invention belongs to the field of low-power consumption Bluetooth technology in wireless communication, in particular to a method for improving the sensitivity of the receiver in a low-power consumption Bluetooth system. The method of the invention is to introduce a deinterleaver between the symbol pattern mapper and GFSK modulator of the transmitting terminal under the low-power consumption Bluetooth coding mode, which is used to perform additional processing on the bitstream data and then perform modulation; then, due to the introduction of interleaving, Turbo iterative processing of demodulation and decoding can be performed at the receiving terminal; the receiving terminal comprises a Turbo iterative demodulator and decoder, which is used to model the low-power consumption Bluetooth GFSK modulator and convolutional coder into finite state machines, and then combine the deinterleaver to use the BCJR algorithm for iterative demodulation and decoding.Type: ApplicationFiled: January 25, 2021Publication date: July 28, 2022Inventors: Yi Jiang, Jie Yang, Qinghe Du, Rui Wang, Wei Zhang, Fengjie Li
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Patent number: 11374802Abstract: Introduced are a data transmission method, apparatus and device based on a modulation signal and a storage medium. The method includes steps as follows: calculating a first amplitude-modulated sine wave signal and a second amplitude-modulated sine wave signal with each preset frequency individually; based on the first amplitude-modulated sine wave signal and the second amplitude-modulated sine wave signal with the each preset frequency and according to a preset mapping rule, mapping a sequence of data bits to be sent into a signal sequence; and processing the signal sequence to generate a transmittable radio-frequency signal, and sending the transmittable radio-frequency signal to a receiving end.Type: GrantFiled: June 20, 2018Date of Patent: June 28, 2022Assignee: ZTE CORPORATIONInventors: Bo Zhang, Bo Sun, Qinghe Du, Aoqin Duan
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Publication number: 20210399928Abstract: Introduced are a data transmission method, apparatus and device based on a modulation signal and a storage medium. The method includes steps as follows: calculating a first amplitude-modulated sine wave signal and a second amplitude-modulated sine wave signal with each preset frequency individually; based on the first amplitude-modulated sine wave signal and the second amplitude-modulated sine wave signal with the each preset frequency and according to a preset mapping rule, mapping a sequence of data bits to be sent into a signal sequence; and processing the signal sequence to generate a transmittable radio-frequency signal, and sending the transmittable radio-frequency signal to a receiving end.Type: ApplicationFiled: June 20, 2018Publication date: December 23, 2021Applicant: ZTE CORPORATIONInventors: Bo Zhang, Bo Sun, Qinghe Du, Aoqin Duan
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Patent number: 9204262Abstract: A fountain code-based cooperative multicast method comprises: 1) transmitting forwards, by a base station, a code symbol informed by a packet encoded by a fountain code, after receiving a feedback that all users correctly decode, stopping transmitting a data; 2) after completing receiving the data early by a user with good channel conditions, monitoring a “help” signal of other users, when receiving the “help” signal, the user with good channel conditions participates in a cooperation, when receiving the feedback of a cooperative user that has correctly received the data, stopping the cooperation by the user with good channel conditions; and 3) monitoring a feedback signal of remaining users that correctly receive the data by a user that does not complete receiving the data, and deciding whether to transmit a “help” signal, according to a signal intensity of the feedback signal.Type: GrantFiled: April 6, 2012Date of Patent: December 1, 2015Assignee: XI'AN JIAOTONG UNIVERSITYInventors: Pinyi Ren, Jincheng Lu, Qinghe Du, Zhigang Chen, Yichen Wang, Guangen Wu
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Publication number: 20140369250Abstract: A fountain code-based cooperative multicast method comprises: 1) transmitting forwards, by a base station, a code symbol informed by a packet encoded by a fountain code, after receiving a feedback that all users correctly decode by the base station, stopping transmitting a data; 2) after completing receiving the data early by a user with good channel conditions, monitoring a “help” signal of other users, when receiving the “help” signal, the user with good channel conditions participates in a cooperation, when receiving the feedback of a cooperative user that has correctly received the data, stopping the cooperation by the user with good channel conditions; and 3) monitoring a feedback signal of remaining users that correctly receive the data by a user that does not complete receiving the data, and deciding whether to transmit a “help” signal, according to a signal intensity of the—feedback signal.Type: ApplicationFiled: April 6, 2012Publication date: December 18, 2014Applicant: XI'AN JIAOTANG UNIVERSITYInventors: Pinyi Ren, Jincheng Lu, Qinghe Du, Zhigang Chen, Yichen Wang, Guangen Wu
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Patent number: 8472304Abstract: A method allocates bandwidth to channels in an orthogonal frequency division multiple access and time division multiple access (TDMA) network. The network includes a master device (master) communicating with a set of slave devices (slaves). The master defines a set ?m of logical indices ? of a set of N physical subcarriers for a set of M data streams to be allocated to a set of Nd logical data subcarriers according to ?m={?|?=iM+m, i=0,1,2, . . . , d?1}, where d=Nd/M. The set of N data subcarriers is mapped to the set of Nd logical subcarriers according to the logical indices, and the data subcarriers are allocated to the logical subcarriers.Type: GrantFiled: July 15, 2009Date of Patent: June 25, 2013Assignee: Mitsubishi Electric Research Laboratories, Inc.Inventors: Philip V. Orlik, Qinghe Du, Zafer Sahinoglu, Chunjie Duan, Jinyun Zhang
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Patent number: 8089856Abstract: In an oversampled orthogonal frequency-division multiplexing (OFDM) orthogonal network, the preamble used for time synchronization does not have an ideal autocorrelation function due to guard bands, which degrade the accuracy of symbol timing. Therefore, a zero-correlation-zone (ZCZ) based preamble is used for time synchronization. Across correlation function (CCF) used for time synchronization is forced to 0 within a certain region around a main lobe. The length of the ZCZ is guaranteed to be larger than a cyclic prefix length of OFDM data symbols synchronization accuracy.Type: GrantFiled: April 8, 2009Date of Patent: January 3, 2012Assignee: Mitsubishi Electric Research Laboratories, Inc.Inventors: Philip V. Orlik, Qinghe Du, Chunjie Duan, Zafer Sahinoglu
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Patent number: 8014326Abstract: A method and system provide multiple-access control and frequency band allocation, and transmission time sharing among multiple users in orthogonal frequency-division multiple-access (OFDMA) and time-division multiple-access (TDMA) networks. The method can be applied to uplinks and downlinks of multi-user, multi-carrier communication networks. Under a total transmission-power minimization constraint, the method can allocate carriers and transmission time to users optimally, and at the same time, can guarantee a data rate or equivalently a latency requirement of each user.Type: GrantFiled: January 26, 2009Date of Patent: September 6, 2011Assignee: Mitsubishi Electric Research Laboratories, Inc.Inventors: Zafer Sahinoglu, Yi Huang, Qinghe Du, Zhifeng Tao, Ghulam Bhatti, Jinyun Zhang
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Publication number: 20100260276Abstract: In an oversampled orthogonal frequency-division multiplexing (OFDM) orthogonal network, the preamble used for time synchronization does not have an ideal autocorrelation function due to guard bands, which degrade the accuracy of symbol timing. Therefore, a zero-correlation-zone (ZCZ) based preamble is used for time synchronization. Across correlation function (CCF) used for time synchronization is forced to 0 within a certain region around a main lobe. The length of the ZCZ is guaranteed to be larger than a cyclic prefix length of OFDM data symbols synchronization accuracy.Type: ApplicationFiled: April 8, 2009Publication date: October 14, 2010Inventors: Philip V. Orlik, Qinghe Du, Chunjie Duan, Zafer Sahinoglu
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Publication number: 20100246375Abstract: A method allocates bandwidth to channels in an orthogonal frequency division multiple access and time division multiple access (TDMA) network. The network includes a master device (master) communicating with a set of slave devices (slaves). The master defines a set ?m of logical indices ? of a set of N physical subcarriers for a set of M data streams to be allocated to a set of Nd logical data subcarriers according to ?m={?|?=iM+m, i=0,1,2, . . . , d?1}, where d=Nd/M. The set of N data subcarriers is mapped to the set of Nd logical subcarriers according to the logical indices, and the data subcarriers are allocated to the logical subcarriers.Type: ApplicationFiled: July 15, 2009Publication date: September 30, 2010Inventors: Philip V. Orlik, Qinghe Du, Zafer Sahinoglu, Chunjie Duan, Jinyun Zhang
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Publication number: 20100189069Abstract: A method and system provide multiple-access control and frequency band allocation, and transmission time sharing among multiple users in orthogonal frequency-division multiple-access (OFDMA) and time-division multiple-access (TDMA) networks. The method can be applied to uplinks and downlinks of multi-user, multi-carrier communication networks. Under a total transmission-power minimization constraint, the method can allocate carriers and transmission time to users optimally, and at the same time, can guarantee a data rate or equivalently a latency requirement of each user.Type: ApplicationFiled: January 26, 2009Publication date: July 29, 2010Inventors: Zafer Sahinoglu, Yi Huang, Qinghe Du, Zhifeng Tao, Ghulam Bhatti, Jinyun Zhang