Patents by Inventor David Damian Bevan
David Damian Bevan 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: 10601455Abstract: Methods and apparatus are disclosed for processing interference due to passive non-linear products of transmitted signals in a wireless network, and more specifically, but not exclusively, to reduction of interference caused to a receiver due to passive intermodulation (PIM) products generated from at least a first Multiple Input Multiple Output (MIMO) signal comprising first and second MIMO component streams at a first carrier frequency. In other scenarios, there may be two or more carrier frequencies combining to cause PIM, and each carrier frequency may have two or more MIMO component streams.Type: GrantFiled: December 6, 2018Date of Patent: March 24, 2020Assignee: AceAxis LimitedInventors: David Damian Bevan, Fiona Wilson, Simon Gale
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Publication number: 20190109611Abstract: Methods and apparatus are disclosed for processing interference due to passive non-linear products of transmitted signals in a wireless network, and more specifically, but not exclusively, to reduction of interference caused to a receiver due to passive intermodulation (PIM) products generated from at least a first Multiple Input Multiple Output (MIMO) signal comprising first and second MIMO component streams at a first carrier frequency. In other scenarios, there may be two or more carrier frequencies combining to cause PIM, and each carrier frequency may have two or more MIMO component streams.Type: ApplicationFiled: December 6, 2018Publication date: April 11, 2019Inventors: David Damian BEVAN, Fiona WILSON, Simon GALE
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Patent number: 10237109Abstract: Interference (I1, I2) is mitigated in a waveform received at the input of a receiver in a wireless network, the interference comprising passive intermodulation PIM products of at least a first signal (C1). A first stream of time samples (5) is generated of a simulated first PFM product of at least the first signal (C1), and a second stream of time samples (6) is generated of the simulated first PIM product. The second stream has a delay with respect to the first stream. A replica (8) is generated of the interference by processing (7) at least the first stream and the second stream, the processing comprising reducing a degree of correlation between the first stream and the second stream, and the replica of the interference is combined with a stream of time samples of the received waveform (40) to reduce the interference in the received waveform.Type: GrantFiled: April 11, 2017Date of Patent: March 19, 2019Assignee: AceAxis LimitedInventors: Fiona Wilson, Simon Gale, David Damian Bevan
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Publication number: 20170222858Abstract: Interference (I1, I2) is mitigated in a waveform received at the input of a receiver in a wireless network, the interference comprising passive intermodulation PIM products of at least a first signal (C1). A first stream of time samples (5) is generated of a simulated first PFM product of at least the first signal (C1), and a second stream of time samples (6) is generated of the simulated first PIM product. The second stream has a delay with respect to the first stream. A replica (8) is generated of the interference by processing (7) at least the first stream and the second stream, the processing comprising reducing a degree of correlation between the first stream and the second stream, and the replica of the interference is combined with a stream of time samples of the received waveform (40) to reduce the interference in the received waveform.Type: ApplicationFiled: April 11, 2017Publication date: August 3, 2017Inventors: Fiona WILSON, Simon Gale, David Damian BEVAN
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Patent number: 8565787Abstract: A method of estimation of a location of a terminal within an area of coverage of a wireless network comprising at least one fixed node. The method comprises estimating the location of the terminal on the basis of at least a comparison between data representing a first metric of a complex frequency response of a radio channel between the terminal and one of the at least one fixed node and data representing a plurality of stored metrics. Each of the plurality of stored metrics being related to one of a plurality of different locations within the network and each stored metric being of a complex frequency response measured between the one of the fixed nodes and the location within the network to which the metric relates.Type: GrantFiled: September 6, 2012Date of Patent: October 22, 2013Assignee: Blackberry LimitedInventors: David Damian Bevan, Ilya Averin, Denis Lysyakov
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Patent number: 8370090Abstract: The location of a terminal is estimated within an area of coverage of a wireless network comprising at least one fixed node by measuring a complex frequency response of a radio channel between the terminal and one of said fixed nodes and estimating the location of the terminal on the basis of at least a comparison between data representing a first metric of the measured complex frequency response and data representing a plurality of stored metrics, each of said plurality of stored metrics being related to one of a plurality of different locations within the network and each stored metric being of a complex frequency response measured between the said one of said fixed nodes and the location within the network to which the metric relates.Type: GrantFiled: March 21, 2012Date of Patent: February 5, 2013Assignee: Research In Motion LimitedInventors: David Damian Bevan, Ilya Averin, Denis Lysyakov
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Publication number: 20120330603Abstract: A method of estimation of a location of a terminal within an area of coverage of a wireless network comprising at least one fixed node. The method comprises estimating the location of the terminal on the basis of at least a comparison between data representing a first metric of a complex frequency response of a radio channel between the terminal and one of the at least one fixed node and data representing a plurality of stored metrics. Each of the plurality of stored metrics being related to one of a plurality of different locations within the network and each stored metric being of a complex frequency response measured between the one of the fixed nodes and the location within the network to which the metric relates.Type: ApplicationFiled: September 6, 2012Publication date: December 27, 2012Applicant: Research In Motion LimitedInventors: David Damian BEVAN, lIya AVERIN, Denis LYSYAKOV
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Publication number: 20120178472Abstract: The location of a terminal is estimated within an area of coverage of a wireless network comprising at least one fixed node by measuring a complex frequency response of a radio channel between the terminal and one of said fixed nodes and estimating the location of the terminal on the basis of at least a comparison between data representing a first metric of the measured complex frequency response and data representing a plurality of stored metrics, each of said plurality of stored metrics being related to one of a plurality of different locations within the network and each stored metric being of a complex frequency response measured between the said one of said fixed nodes and the location within the network to which the metric relates.Type: ApplicationFiled: March 21, 2012Publication date: July 12, 2012Applicant: ROCKSTAR BIDCO LPInventors: David Damian Bevan, Ilya Averin, Denis Lysyakov
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Patent number: 8170815Abstract: The location of a terminal is estimated within an area of coverage of a wireless network comprising at least one fixed node by measuring a complex frequency response of a radio channel between the terminal and one of said fixed nodes and estimating the location of the terminal on the basis of at least a comparison between data representing a first metric of the measured complex frequency response and data representing a plurality of stored metrics, each of said plurality of stored metrics being related to one of a plurality of different locations within the network and each stored metric being of a complex frequency response measured between the said one of said fixed nodes and the location within the network to which the metric relates.Type: GrantFiled: June 8, 2009Date of Patent: May 1, 2012Assignee: Rockstar BIDCO LPInventors: David Damian Bevan, Ilya Averin, Denis Lysyakov
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Publication number: 20100311436Abstract: The location of a terminal is estimated within an area of coverage of a wireless network comprising at least one fixed node by measuring a complex frequency response of a radio channel between the terminal and one of said fixed nodes and estimating the location of the terminal on the basis of at least a comparison between data representing a first metric of the measured complex frequency response and data representing a plurality of stored metrics, each of said plurality of stored metrics being related to one of a plurality of different locations within the network and each stored metric being of a complex frequency response measured between the said one of said fixed nodes and the location within the network to which the metric relates.Type: ApplicationFiled: June 8, 2009Publication date: December 9, 2010Applicant: Nortel Networks LimitedInventors: David Damian Bevan, IIya Averin, Denis Lysyakov