Patents by Inventor Xiaoqiang Ma
Xiaoqiang Ma 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: 12231525Abstract: A message processing method and device, a storage medium, and an electronic device are provided. The method includes: receiving a message to be processed by means of a Bidirectional Forwarding Detection (BFD) processing engine of a chip, the BFD processing engine storing head Maintenance End Points (MEP); if a head MEP corresponding to the message to be processed is not found in the BFD processing engine of the chip, judging whether to forward the message to be processed to a processor; and if a judgment result is yes, saving the information of the message in a client MEP in the processor. The problem in the related art that an MEP on a Head side in RFC8562 only transmits but does not receive a BFD message, an MEP on a Tail side only receives but does not transmits a BFD message and thus the requirements cannot be satisfied is resolved.Type: GrantFiled: September 7, 2020Date of Patent: February 18, 2025Assignee: SUZHOU CENTEC COMMUNICATIONS CO., LTD.Inventors: Zhichuan He, Xiaoqiang Ma, Haiqing Xu, Jie Zhou
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Patent number: 11920129Abstract: The present invention relates to ligation and/or assembly of nucleic acid molecules. Particularly, a double-stranded target nucleic acid having overhangs of at least one nucleotide is ligated with another nucleic acid molecule capable of forming a stem-loop structure with an overhang of at least one nucleotide. The invention is suitable for tagging nucleic acid molecules. In specific embodiments, the overhangs can be produced by chemical cleavage of phosphorothioate-modified nucleic acid molecules. The invention further relates to the amplification of the ligated product, and using the resultant amplicon for assembly of multiple nucleic acid fragments.Type: GrantFiled: October 24, 2018Date of Patent: March 5, 2024Assignee: National University of SingaporeInventors: Kang Zhou, Xiaoqiang Ma, Hong Liang
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Publication number: 20230043889Abstract: A message processing method and device, a storage medium, and an electronic device are provided. The method includes: receiving a message to be processed by means of a Bidirectional Forwarding Detection (BFD) processing engine of a chip, the BFD processing engine storing head Maintenance End Points (MEP); if a head MEP corresponding to the message to be processed is not found in the BFD processing engine of the chip, judging whether to forward the message to be processed to a processor; and if a judgment result is yes, saving the information of the message in a client MEP in the processor. The problem in the related art that an MEP on a Head side in RFC8562 only transmits but does not receive a BFD message, an MEP on a Tail side only receives but does not transmits a BFD message and thus the requirements cannot be satisfied is resolved.Type: ApplicationFiled: September 7, 2020Publication date: February 9, 2023Inventors: Zhichuan HE, Xiaoqiang MA, Haiqing XU, Jie ZHOU
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Patent number: 11569881Abstract: A method and an apparatus in a multiple-input multiple-output (MIMO) wireless communication system are provided. A signal is received over a channel. The channel is decomposed into a plurality of virtual channels. Symbol detection is performed on each of the plurality of virtual channels. Values are obtained for the channel. Decoding is performed using the values to output a decoded symbol value of the received signal.Type: GrantFiled: August 28, 2020Date of Patent: January 31, 2023Inventors: Hyukjoon Kwon, Xiaoqiang Ma, Kee-Bong Song
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Patent number: 10873491Abstract: An apparatus including a plurality of multipliers each configured to multiply correlations by a weight, wherein the correlations include a plurality of subsets of correlations, wherein the weight of each of the plurality of multipliers is uniquely different from the weights of at least two of the plurality of multipliers and the correlations; a summation processor configured to sum the weight multiplied correlations of the plurality of multipliers for time n, where n is an integer; and a coarse timing and coarse frequency processor configured to generate a coarse timing and a coarse frequency based on the sum.Type: GrantFiled: February 6, 2019Date of Patent: December 22, 2020Inventors: Xiaoqiang Ma, Hongbing Cheng, Linbo Li, Jungwon Lee
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Publication number: 20200395985Abstract: A method and an apparatus in a multiple-input multiple-output (MIMO) wireless communication system are provided. A signal is received over a channel. The channel is decomposed into a plurality of virtual channels. Symbol detection is performed on each of the plurality of virtual channels. Values are obtained for the channel. Decoding is performed using the values to output a decoded symbol value of the received signal.Type: ApplicationFiled: August 28, 2020Publication date: December 17, 2020Inventors: Hyukjoon Kwon, Xiaoqiang Ma, Kee-Bong Song
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Publication number: 20200308574Abstract: The present invention relates to ligation and/or assembly of nucleic acid molecules. Particularly, a double-stranded target nucleic acid having overhangs of at least one nucleotide is ligated with another nucleic acid molecule capable of forming a stem-loop structure with an overhang of at least one nucleotide. The invention is suitable for tagging nucleic acid molecules. In specific embodiments, the overhangs can be produced by chemical cleavage of phosphorothioate-modified nucleic acid molecules. The invention further relates to the amplification of the ligated product, and using the resultant amplicon for assembly of multiple nucleic acid fragments.Type: ApplicationFiled: October 24, 2018Publication date: October 1, 2020Inventors: Kang ZHOU, Xiaoqiang MA, Hong LIANG
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Patent number: 10778300Abstract: A method and an apparatus in a multiple-input multiple-output (MIMO) wireless communication system are provided. A signal is received over a channel. The channel is decomposed into a plurality of virtual channels. Symbol detection is performed on each of the plurality of virtual channels using respective symbol detectors. At least one of the symbol detectors has a lower rank than that of the channel. Output from the symbol detectors is combined to obtain final log likelihood ration (LLR) values for layers of the channel. Decoding is performed using the final LLR values to output a decoded symbol value of the received signal.Type: GrantFiled: February 12, 2019Date of Patent: September 15, 2020Assignee: Samsung Electronics Co., LtdInventors: Hyukjoon Kwon, Xiaoqiang Ma, Kee-Bong Song
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Publication number: 20200177248Abstract: A method and an apparatus in a multiple-input multiple-output (MIMO) wireless communication system are provided. A signal is received over a channel. The channel is decomposed into a plurality of virtual channels. Symbol detection is performed on each of the plurality of virtual channels using respective symbol detectors. At least one of the symbol detectors has a lower rank than that of the channel. Output from the symbol detectors is combined to obtain final log likelihood ration (LLR) values for layers of the channel. Decoding is performed using the final LLR values to output a decoded symbol value of the received signal.Type: ApplicationFiled: February 12, 2019Publication date: June 4, 2020Inventors: Hyukjoon KWON, Xiaoqiang MA, Kee-Bong SONG
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Patent number: 10432391Abstract: A receiver of a modulated signal is presented. The receiver includes a synchronization detector configured to receive a signal indicative of the modulated signal that includes a synchronization header and a data payload, and to detect an end of the synchronization header. The synchronization detector is configured to generate a differential signal based on the signal, perform cross-correlation of the differential signal with a reference differential signal to generate a cross-correlation output, compare a first sample of the cross-correlation output at a sample index associated with a hypothesized start frame delimiter (SFD) peak index with a second sample of the cross-correlation output at a sample index associated with a hypothesized preamble peak index, and detect an end of the synchronization header in response to a comparison result in which a magnitude of the first sample is greater than a magnitude of the second sample of the cross-correlation output.Type: GrantFiled: July 10, 2018Date of Patent: October 1, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Farrokh Etezadi, Linbo Li, Chun Kin Au Yeung, Xiaoqiang Ma
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Publication number: 20190173718Abstract: An apparatus including a plurality of multipliers each configured to multiply correlations by a weight, wherein the correlations include a plurality of subsets of correlations, wherein the weight of each of the plurality of multipliers is uniquely different from the weights of at least two of the plurality of multipliers and the correlations; a summation processor configured to sum the weight multiplied correlations of the plurality of multipliers for time n, where n is an integer; and a coarse timing and coarse frequency processor configured to generate a coarse timing and a coarse frequency based on the sum.Type: ApplicationFiled: February 6, 2019Publication date: June 6, 2019Inventors: Xiaoqiang MA, Hongbing Cheng, Linbo Li, Jungwon Lee
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Patent number: 10257012Abstract: The apparatus includes a plurality of correlation processors configured to each receive a group of samples and generate correlations of each group of samples; a plurality of multipliers each configured to multiply the correlations of one of the plurality of correlation processors by a weight, wherein the weight of at least one of the plurality of multipliers is different from the weight of at least another one of the plurality of multipliers; a summation processor configured to sum the weight multiplied correlations of the plurality of multipliers for time n, where n is an integer; and a coarse timing and coarse frequency processor configured to generate a coarse timing and a coarse frequency based on the sum.Type: GrantFiled: March 1, 2017Date of Patent: April 9, 2019Assignee: Samsung Electronics Co., LtdInventors: Xiaoqiang Ma, Hongbing Cheng, Linbo Li, Jungwon Lee
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Patent number: 10129014Abstract: According to an embodiment of the present disclosure, a receiver of modulated signals comprises a signal mixer, a synchronization detector, and a data demodulator. The signal mixer is configured to perform baseband down-conversion of a signal according to a mixer frequency, the signal including a synchronization header and a data payload. The synchronization detector is configured to: generate a differential signal based on the signal, perform cross-correlation of the differential signal with a reference differential signal to generate a cross-correlation output, and analyze the cross-correlation output to detect an end of the synchronization header. The data demodulator is configured to demodulate the data payload in response to detection of the end of the synchronization header.Type: GrantFiled: February 23, 2017Date of Patent: November 13, 2018Assignee: Samsung Electronics Co., Ltd.Inventors: Farrokh Etezadi, Linbo Li, Chun Kin Au Yeung, Xiaoqiang Ma
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Publication number: 20180323955Abstract: A receiver of a modulated signal includes a synchronization detector configured to receive a signal indicative of the modulated signal and to detect an end of the synchronization header in the signal. The synchronization detector is configured to generate a differential signal based on the signal, perform cross-correlation of the differential signal with a reference differential signal to generate a cross-correlation output, compare a first sample of the cross-correlation output at a sample index associated with a hypothesized start frame delimiter (SFD) peak index with a second sample of the cross-correlation output at a sample index associated with a hypothesized preamble peak index, and detect an end of the synchronization header in response to a comparison result in which a magnitude of the first sample of the cross-correlation output is greater than a magnitude of the second sample of the cross-correlation output.Type: ApplicationFiled: July 10, 2018Publication date: November 8, 2018Inventors: Farrokh Etezadi, Linbo Li, Chun Kin Au Yeung, Xiaoqiang Ma
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System and method of tracking and compensating for frequency and timing offsets of modulated signals
Patent number: 10079660Abstract: According to an embodiment of the present disclosure, a receiver of modulated signals comprises a signal sampling unit configured to sample a signal, a zero-crossing demodulator, and a timing offset tracking unit. The zero-crossing demodulator includes: a zero-crossing counter configured to determine a number of zero crossings for each pulse of the signal, and a symbol selector configured to decode a sequence of pulses as a symbol based on the number of zero crossings in the sequence of pulses. The timing offset tracking unit is configured to: calculate a metric based on an accumulation of the number of zero crossings and corresponding pulse values of the decoded symbol, compare the metric to a predetermined threshold value, and compensate a timing offset of the signal by causing the signal sampling unit to sample the signal at an earlier interval or a later interval in response to the comparison.Type: GrantFiled: February 15, 2017Date of Patent: September 18, 2018Assignee: Samsung Electroncis Co., Ltd.Inventors: Chun Kin Au Yeung, Farrokh Etezadi, Xiaoqiang Ma, Linbo Li, Kee-Bong Song -
Publication number: 20180212749Abstract: According to an embodiment of the present disclosure, a receiver of modulated signals comprises a signal mixer, a synchronization detector, and a data demodulator. The signal mixer is configured to perform baseband down-conversion of a signal according to a mixer frequency, the signal including a synchronization header and a data payload. The synchronization detector is configured to: generate a differential signal based on the signal, perform cross-correlation of the differential signal with a reference differential signal to generate a cross-correlation output, and analyze the cross-correlation output to detect an end of the synchronization header. The data demodulator is configured to demodulate the data payload in response to detection of the end of the synchronization header.Type: ApplicationFiled: February 23, 2017Publication date: July 26, 2018Inventors: Chun Kin Au Yeung, Farrokh Etezadi, Xiaoqiang Ma, Linbo Li
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SYSTEM AND METHOD OF TRACKING AND COMPENSATING FOR FREQUENCY AND TIMING OFFSETS OF MODULATED SIGNALS
Publication number: 20180212724Abstract: According to an embodiment of the present disclosure, a receiver of modulated signals comprises a signal sampling unit configured to sample a signal, a zero-crossing demodulator, and a timing offset tracking unit. The zero-crossing demodulator includes: a zero-crossing counter configured to determine a number of zero crossings for each pulse of the signal, and a symbol selector configured to decode a sequence of pulses as a symbol based on the number of zero crossings in the sequence of pulses. The timing offset tracking unit is configured to: calculate a metric based on an accumulation of the number of zero crossings and corresponding pulse values of the decoded symbol, compare the metric to a predetermined threshold value, and compensate a timing offset of the signal by causing the signal sampling unit to sample the signal at an earlier interval or a later interval in response to the comparison.Type: ApplicationFiled: February 15, 2017Publication date: July 26, 2018Inventors: Chun Kin Au Yeung, Farrokh Etezadi, Xiaoqiang Ma, Linbo Li, Kee-Bong Song -
Publication number: 20180167254Abstract: An apparatus and a method. The apparatus includes a plurality of correlation processors configured to each receive a group of samples and generate correlations of each group of samples; a plurality of multipliers each configured to multiply the correlations of one of the plurality of correlation processors by a weight, wherein the weight of at least one of the plurality of multipliers is different from the weight of at least another one of the plurality of multipliers; a summation processor configured to sum the weight multiplied correlations of the plurality of multipliers for time n, where n is an integer; and a coarse timing and coarse frequency processor configured to generate a coarse timing and a coarse frequency based on the sum.Type: ApplicationFiled: March 1, 2017Publication date: June 14, 2018Inventors: Xiaoqiang MA, Hongbing Cheng, Linbo Li, Jungwon Lee
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Publication number: 20140357207Abstract: A method and a mobile terminal for regulating a Specific Absorption Rate (SAR) of electromagnetic wave energy based on a sensor are disclosed. According to whether a distance between a human body and the mobile terminal is within a preset distance range acquired through a proximity sensor and/or whether a bottom side face of the mobile terminal in the current position is a side face adjacent to a terminal antenna acquired through a gravity sensor, the mobile terminal regulates signal transmission power of the mobile terminal In the technical scheme of the present document, the signal transmission power of the mobile terminal is controlled according to data of the sensors, thereby controlling the SAR of electromagnetic wave energy, solving the problem that an SAR value exceeding the standard affects the human body in the related art, and protecting the user of the mobile terminal in real time.Type: ApplicationFiled: April 11, 2012Publication date: December 4, 2014Applicant: ZTE CORPORATIONInventor: Xiaoqiang Ma
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Patent number: 8537284Abstract: A method and apparatus are disclosed for determining the presence of adjacent channel interference. Received digital signals are processed to detect the existence of strong channels adjacent to the channel of interest and control signals may be generated based on the detection of strong adjacent channels. The control signals are then used to adjust the signal power of the received signals.Type: GrantFiled: March 20, 2009Date of Patent: September 17, 2013Assignee: Advanced Micro Devices, Inc.Inventors: Xiaoqiang Ma, Azzedine Touzni, Jason Adams, David Lewis, Louis Giannini, Feng Huang