Patents by Inventor Xiaojing Huang
Xiaojing Huang 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: 10706191Abstract: Systems, methods, and computer-readable storage media that may be used to generate a Bayesian hierarchical model. One method includes generating a plurality of geographic regions by grouping one or more geographic sub-regions into each of the plurality of geographic regions. The method further includes receiving data for the geographic sub-regions, the data including responses, content inputs, content types, and location identifiers. The method further includes generating geo-level data from the received data by grouping the responses and content inputs of the received data based on a correlation of the location identifiers of the received data to the plurality of geographic regions. The method includes fitting a Bayesian hierarchical model based on at least the geo-level data, the content types, and the geographic regions and determining a content input mix for the content types for each geographic region based on the Bayesian hierarchical model and a content input constraint.Type: GrantFiled: August 31, 2017Date of Patent: July 7, 2020Assignee: Google LLCInventors: Yunting Sun, Yuxue Jin, James Koehler, Xiaojing Huang, David Chan, Yueqing Wang, Conor Sontag, Shi Zhong, Luis Gonzalez Perez
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Patent number: 10237095Abstract: A communication system including a transmitter and a receiver is disclosed. The transmitter transmits frames, at least two consecutive frames containing different training sequences. The receiver receives data communicated from the transmitter over a channel. The receiver combines and jointly processes the at least two consecutive frames transmitted by the transmitter to estimate a channel state of the channel.Type: GrantFiled: September 22, 2015Date of Patent: March 19, 2019Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Joseph Pathikulangara, David Humphrey, Xiaojing Huang, Jian Zhang, Valeriy Dyadyuk
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Publication number: 20190065638Abstract: Systems, methods, and computer-readable storage media that may be used to generate a Bayesian hierarchical model. One method includes generating a plurality of geographic regions by grouping one or more geographic sub-regions into each of the plurality of geographic regions. The method further includes receiving data for the geographic sub-regions, the data including responses, content inputs, content types, and location identifiers. The method further includes generating geo-level data from the received data by grouping the responses and content inputs of the received data based on a correlation of the location identifiers of the received data to the plurality of geographic regions. The method includes fitting a Bayesian hierarchical model based on at least the geo-level data, the content types, and the geographic regions and determining a content input mix for the content types for each geographic region based on the Bayesian hierarchical model and a content input constraint.Type: ApplicationFiled: August 31, 2017Publication date: February 28, 2019Applicant: Google Inc.Inventors: Yunting Sun, Yuxue Jin, James Koehler, Xiaojing Huang, David Chan, Yueqing Wang, Conor Sontag, Shi Zhong, Luis Gonzalez Perez
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Publication number: 20170302482Abstract: A communication system including a transmitter and a receiver is disclosed. The transmitter transmits frames, at least two consecutive frames containing different training sequences. The receiver receives data communicated from the transmitter over a channel. The receiver combines and jointly processes the at least two consecutive frames transmitted by the transmitter to estimate a channel state of the channel.Type: ApplicationFiled: September 22, 2015Publication date: October 19, 2017Applicant: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATIONInventors: Joseph Abraham Pathikulangara, David Humphrey, Jian Zhang, Xiaojing Huang, Valeriy Dyadyuk
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Patent number: 9485127Abstract: Disclosed is a wireless transmitter comprising: a module configured to modulate input data bits into data symbols according to a predetermined modulation scheme, and group the data symbols into one or more precoding blocks; at least one symbol insertion module, each configured to insert one or more cancellation symbols into a corresponding precoding block; at least one precoding module, each configured to precode a corresponding precoding block; a subcarrier insertion module configured to concatenate the one or more precoded blocks and to insert at least one cancellation subcarrier into the concatenated precoded blocks to form a precoded OFDM symbol; a module configured to process the precoded OFDM symbol so as to reduce the out-of-band power emitted by the transmitter in transmitting the precoded OFDM symbol, wherein the processing uses the inserted cancellation symbols and cancellation subcarriers; and a module configured to transmit the processed precoded OFDM symbol over a wireless communication channel.Type: GrantFiled: October 18, 2012Date of Patent: November 1, 2016Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Xiaojing Huang, Jian Zhang
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Patent number: 9426011Abstract: Disclosed is a transmitter for a communication system. The transmitter comprises a sidelobe suppression module configured to apply a suppression matrix to an input vector comprising symbols to be transmitted by the transmitter; a modulation module configured to modulate the precoded vector to a time-domain symbol using a plurality of subcarriers, each symbol in the precoded vector having a corresponding subcarrier; and a digital-to-analog conversion module configured to convert the time-domain symbol to an analog waveform for transmission. The suppression matrix is constructed such that emissions at one or more predetermined suppression distances lying outside a frequency band defined by the subcarriers are set to zero according to a predetermined emission model.Type: GrantFiled: July 7, 2014Date of Patent: August 23, 2016Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Jian Zhang, Xiaojing Huang, Yingjie Jay Guo
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Patent number: 9313764Abstract: Disclosed is an apparatus for estimating the location of a remote node. The apparatus comprises an antenna array comprising a plurality of elements in a fixed spatial arrangement, at least one element being a transmitting element configured to transmit a first wireless signal to the remote node, and at least two elements being receiving elements configured to receive a second wireless signal transmitted by the remote node in response to the first wireless signal. The apparatus further comprises a signal processing unit connected to the antenna array, the signal processing unit being configured to: estimate a plurality of round trip distances using the wireless signals, each round trip distance being from a transmitting element to the remote node and back to a receiving element; and estimate the location of the remote node using the round trip distance estimates.Type: GrantFiled: July 20, 2011Date of Patent: April 12, 2016Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Mark Hedley, Yingjie Jay Guo, Xiaojing Huang
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Patent number: 9240910Abstract: A transmission signal pre-processing method and apparatus for out-of-band emission cancellation are disclosed. For each of N subchannels in a band weighting each of N subchannel symbols by a calculated value in the range from 0 to 1 is performed. Precoding said N weighted symbols, organised as an NĂ—1 matrix, by multiplication by a unitary matrix is then performed.Type: GrantFiled: October 14, 2010Date of Patent: January 19, 2016Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Xiaojing Huang, Yingjie Jay Guo
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Patent number: 9191034Abstract: Disclosed is a communication modulator with sample rate conversion. The modulator comprises a symbol mapping module configured to map an input bitstream to a symbol sequence; a pre-distortion module configured to multiply the symbol sequence by a discrete frequency response to produce a pre-distorted symbol sequence; a modulation module configured to modulate the pre-distorted symbol sequence to a time-domain baseband sample sequence; a sample rate conversion module configured to convert the sample rate of the baseband sample sequence to a different sample rate to produce a sample-rate-converted baseband sample sequence; and an up-conversion module configured to up-convert the sample-rate-converted baseband sample sequence to an intermediate frequency signal. The discrete frequency response by which the pre-distortion module multiplies the symbol sequence is configured to compensate for passband droop introduced to the sample-rate-converted baseband sample sequence by the sample rate conversion module.Type: GrantFiled: March 9, 2011Date of Patent: November 17, 2015Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Xiaojing Huang, Yingjie Jay Guo, Jian Zhang
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Publication number: 20150256373Abstract: Disclosed is a wireless transmitter comprising: a module configured to modulate input data bits into data symbols according to a predetermined modulation scheme, and group the data symbols into one or more precoding blocks; at least one symbol insertion module, each configured to insert one or more cancellation symbols into a corresponding precoding block; at least one precoding module, each configured to precode a corresponding precoding block; a subcarrier insertion module configured to concatenate the one or more precoded blocks and to insert at least one cancellation subcarrier into the concatenated precoded blocks to form a precoded OFDM symbol; a module configured to process the precoded OFDM symbol so as to reduce the out-of-band power emitted by the transmitter in transmitting the precoded OFDM symbol, wherein the processing uses the inserted cancellation symbols and cancellation subcarriers; and a module configured to transmit the processed precoded OFDM symbol over a wireless communication channel.Type: ApplicationFiled: October 18, 2012Publication date: September 10, 2015Applicant: Commonwealth Scientific and Industrial Research OrganisationInventors: Xiaojing Huang, Jian Zhang
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Patent number: 8958500Abstract: Disclosed is a wireless communication signal peak-to-average power ratio reduction, method. The method comprises calculating a peak envelope from an envelope of an input signal using a clipping threshold; smoothing the peak envelope using a window function; mapping the smoothed peak envelope to an attenuation function using the clipping threshold; and applying the attenuation function to the input signal.Type: GrantFiled: November 19, 2010Date of Patent: February 17, 2015Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Xiaojing Huang, Yingjie Jay Guo, Jian Zhang
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Publication number: 20140321523Abstract: Disclosed is a transmitter for a communication system. The transmitter comprises a sidelobe suppression module configured to apply a suppression matrix to an input vector comprising symbols to be transmitted by the transmitter; a modulation module configured to modulate the precoded vector to a time-domain symbol using a plurality of subcarriers, each symbol in the precoded vector having a corresponding subcarrier; and a digital-to-analog conversion module configured to convert the time-domain symbol to an analog waveform for transmission. The suppression matrix is constructed such that emissions at one or more predetermined suppression distances lying outside a frequency band defined by the subcarriers are set to zero according to a predetermined emission model.Type: ApplicationFiled: July 7, 2014Publication date: October 30, 2014Inventors: Jian Zhang, Xiaojing Huang, Yingjie Jay Guo
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Patent number: 8798558Abstract: Disclosed is a transmitter for a communication system. The transmitter comprises a sidelobe suppression module configured to apply a suppression matrix to an input vector comprising symbols to be transmitted by the transmitter; a modulation module configured to modulate the precoded vector to a time-domain symbol using a plurality of subcarriers, each symbol in the precoded vector having a corresponding subcarrier; and a digital-to-analog conversion module configured to convert the time-domain symbol to an analog waveform for transmission. The suppression matrix is constructed such that emissions at one or more predetermined suppression distances lying outside a frequency band defined by the subcarriers are set to zero according to a predetermined emission model.Type: GrantFiled: January 27, 2011Date of Patent: August 5, 2014Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Jian Zhang, Xiaojing Huang, Yingjie Jay Guo
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Publication number: 20140194142Abstract: Disclosed is an apparatus for estimating the location of a remote node. The apparatus comprises an antenna array comprising a plurality of elements in a fixed spatial arrangement, at least one element being a transmitting element configured to transmit a first wireless signal to the remote node, and at least two elements being receiving elements configured to receive a second wireless signal transmitted by the remote node in response to the first wireless signal. The apparatus further comprises a signal processing unit connected to the antenna array, the signal processing unit being configured to: estimate a plurality of round trip distances using the wireless signals, each round trip distance being from a transmitting element to the remote node and back to a receiving element; and estimate the location of the remote node using the round trip distance estimates.Type: ApplicationFiled: July 20, 2011Publication date: July 10, 2014Applicant: COMMONWEALTH SCIENTFIC AND INDUSTRIAL RESEARCH ORGANISATIONInventors: Mark Hedley, Yingjie Jay Guo, Xiaojing Huang
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Patent number: 8754810Abstract: Disclosed is a hybrid antenna array (100) comprising a plurality of digital branches (145), each digital branch including an analogue beamforming sub-array (e.g. 110-1), each sub-array having a plurality of antenna elements (120), a phase shifter (130) adapted to apply a phase shift to the signal from each antenna element, and a combiner (e.g. 135-1) adapted to combine the phase-shifted signals. Each digital branch also includes a signal chain (e.g. 140-1) adapted to convert the output of the sub-array to baseband.Type: GrantFiled: January 29, 2010Date of Patent: June 17, 2014Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Yingjie Jay Guo, John David Bunton, Valeriy Dyadyuk, Xiaojing Huang
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Publication number: 20140105325Abstract: Disclosed is a communication modulator with sample rate conversion. The modulator comprises a symbol mapping module configured to map an input bitstream to a symbol sequence; a pre-distortion module configured to multiply the symbol sequence by a discrete frequency response to produce a pre-distorted symbol sequence; a modulation module configured to modulate the pre-distorted symbol sequence to a time-domain baseband sample sequence; a sample rate conversion module configured to convert the sample rate of the baseband sample sequence to a different sample rate to produce a sample-rate-converted baseband sample sequence; and an up-conversion module configured to up-convert the sample-rate-converted baseband sample sequence to an intermediate frequency signal. The discrete frequency response by which the pre-distortion module multiplies the symbol sequence is configured to compensate for passband droop introduced to the sample-rate-converted baseband sample sequence by the sample rate conversion module.Type: ApplicationFiled: March 9, 2011Publication date: April 17, 2014Applicant: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH SYSTEMSInventors: Xiaojing Huang, Yingjie Jay Guo, Jian Zhang
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Patent number: 8687718Abstract: Disclosed is a method of processing a series of data bits for transmission on a transmit link, the method comprising mapping the series of data bits to a series of data symbols; demultiplexing the series of data symbols to a plurality of substreams of symbols; modulating each substream of symbols to a corresponding series of OFDM symbols; and space precoding the plurality of series of OFDM symbols to form one or more series of space precoded OFDM symbols, wherein the demultiplexing is dependent on channel state information for the transmit link.Type: GrantFiled: July 7, 2009Date of Patent: April 1, 2014Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Xiaojing Huang, Yingjie Jay Guo
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Patent number: 8406323Abstract: In one embodiment, a transmitter converts digital input data into combined-OFDM signals and a receiver recovers data from the transmitted combined-OFDM signals. For transmission, digital data is mapped into data symbols using a commonly known modulation technique, such as QAM or DQPSK. The data symbols are subsequently divided into two or more groups according to a specified grouping pattern. Each group of data symbols is then converted into a separate OFDM subsymbol using IFFT processing. The OFDM subsymbols are then combined according to a specified combining pattern to create a combined-OFDM symbol. Combined-OFDM symbols are then prepared for transmission by affixing cyclic prefixes, converting the symbols to analog format, and performing spectral shaping of the analog signal. Upsampling may be employed to increase the signal bandwidth. In alternative embodiments, OFDM subsymbols may be combined using interleaving to create an interleaved-OFDM symbol.Type: GrantFiled: November 29, 2006Date of Patent: March 26, 2013Assignee: Agere Systems LLCInventors: Xiaojing Huang, Darryn Lowe
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Publication number: 20130005282Abstract: Disclosed is a transmitter for a communication system. The transmitter comprises a sidelobe suppression module configured to apply a suppression matrix to an input vector comprising symbols to be transmitted by the transmitter; a modulation module configured to modulate the precoded vector to a time-domain symbol using a plurality of subcarriers, each symbol in the precoded vector having a corresponding subcarrier; and a digital-to-analog conversion module configured to convert the time-domain symbol to an analog waveform for transmission. The suppression matrix is constructed such that emissions at one or more predetermined suppression distances lying outside a frequency band defined by the subcarriers are set to zero according to a predetermined emission model.Type: ApplicationFiled: January 27, 2011Publication date: January 3, 2013Applicant: Commonwealth Scientific And Industrial Research OrganisationInventors: Jian Zhang, Xiaojing Huang, Yingjie Jay Guo
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Publication number: 20120307925Abstract: Disclosed is a wireless communication signal peak-to-average power ratio reduction, method. The method comprises calculating a peak envelope from an envelope of an input signal using a clipping threshold; smoothing the peak envelope using a window function; mapping the smoothed peak envelope to an attenuation function using the clipping threshold; and applying the attenuation function to the input signal.Type: ApplicationFiled: November 19, 2010Publication date: December 6, 2012Applicant: Commonwealth Scientific And Industrial Research OrganisationInventors: Xiaojing Huang, Yingjie Jay Guo, Jian Zhang