Patents by Inventor Joe McGeehan
Joe McGeehan 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: 8306131Abstract: In a multi user communication system, subcarriers are allocated to subchannels using a quality measurement for each subchannel. An initial sub carrier is allocated to each subchannel, and a quality metric measured. Subsequent subcarriers are allocated in dependence upon the quality measurement for each subchannel. The subchannel with the lowest quality measurement receives the first allocation, and the subchannel with the highest quality measurement receives the last allocation. The subsequent allocation is repeated, following a re-sort of the subchannel quality measurements, until all of the subcarriers are allocated.Type: GrantFiled: February 25, 2005Date of Patent: November 6, 2012Assignee: Kyocera CorporationInventors: Ying Peng, Simon Armour, Joe McGeehan, Tomoyoshi Yokota
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Publication number: 20120039192Abstract: There is provided a first device for use in a communication system, the communication system further comprising a plurality of second devices, the system having a plurality of orthogonal frequency carriers available for transmissions, each second device having a respective carrier frequency offset estimated from signals received from the first device, each of the second devices transmitting a respective stream of symbols using the respective estimated carrier frequency offset and one or more frequency carriers selected from the plurality of orthogonal frequency carriers, the first device comprising receiver circuitry for receiving respective signals from each of the second devices; a channel estimator for generating, from the received signals, an estimate of the channel over which the signals have been transmitted; an interference estimator for generating, from the received signals, an estimate of interference at the first device caused by errors in the carrier frequency offsets estimated by each second devicType: ApplicationFiled: January 28, 2009Publication date: February 16, 2012Applicants: THE UNIVERSITY OF BRISTOL, KYOCERA CORPORATIONInventors: Ying Peng, Simon Armour, Joe McGeehan, Tomoyoshi Yokota, Fangwei Tong
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Publication number: 20110286559Abstract: There is provided a first device for use in a communication system, the communication system further comprising a plurality of second devices divided into a plurality of groups, the system having a plurality of orthogonal frequency carriers available for transmissions, each second device having a respective carrier frequency offset estimated from signals received from the first device, each of the second devices transmitting a respective stream of symbols using the respective estimated carrier frequency offset and one or more frequency carriers selected from the plurality of orthogonal frequency carriers, the first device comprising receiver circuitry for receiving respective signals from each of the second devices; a channel estimator for generating, from the received signals, an estimate of the channel over which the signals have been transmitted; an interference estimator for generating, from the received signals, an estimate of interference at the first device caused by errors in the carrier frequency offType: ApplicationFiled: January 28, 2009Publication date: November 24, 2011Applicants: THE UNIVERSITY OF BRISTOL, KYOCERA CORPORATIONInventors: Ying Peng, Simon Armour, Joe Mcgeehan, Tomoyoshi Yokota, Fangwei Tong
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Patent number: 8023523Abstract: In a multi user communication system, subcarriers are allocated to subchannels using a quality measurement for each subchannel. An initial sub carrier is allocated to each subchannel, and a quality metric measured. Subsequent subcarriers are allocated in dependence upon the quality measurement for each subchannel. The subchannel with the lowest quality measurement receives the first allocation, and the subchannel with the highest quality measurement receives the last allocation. The subsequent allocation is repeated, following a re-sort of the subchannel quality measurements, until all of the subcarriers are allocated.Type: GrantFiled: February 25, 2005Date of Patent: September 20, 2011Assignee: Kyocera CorporationInventors: Ying Peng, Simon Armour, Joe McGeehan, Tomoyoshi Yokota
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Publication number: 20090207829Abstract: In a multi user communication system, subcarriers are allocated to subchannels using a quality measurement for each subchannel. An initial sub carrier is allocated to each subchannel, and a quality metric measured. Subsequent subcarriers are allocated in dependence upon the quality measurement for each subchannel. The subchannel with the lowest quality measurement receives the first allocation, and the subchannel with the highest quality measurement receives the last allocation. The subsequent allocation is repeated, following a re-sort of the subchannel quality measurements, until all of the subcarriers are allocated.Type: ApplicationFiled: February 25, 2005Publication date: August 20, 2009Applicant: KYOCERA CORPORATIONInventors: Ying Peng, Simon Armour, Joe McGeehan, Tomoyoshi Yokota
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Publication number: 20090034456Abstract: In a multi user communication system, subcarriers are allocated to subchannels using a quality measurement for each subchannel. An initial sub carrier is allocated to each subchannel, and a quality metric measured. Subsequent subcarriers are allocated in dependence upon the quality measurement for each subchannel. The subchannel with the lowest quality measurement receives the first allocation, and the subchannel with the highest quality measurement receives the last allocation. The subsequent allocation is repeated, following a re-sort of the subchannel quality measurements, until all of the subcarriers are allocated.Type: ApplicationFiled: February 25, 2005Publication date: February 5, 2009Applicant: KYOCERA CORPORATIONInventors: Ying Peng, Simon Armour, Joe McGeehan, Tomoyoshi Yokota
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Publication number: 20060074959Abstract: A signal processing apparatus comprises a plurality of receiving elements, weighting means, and decoding means. Each of the receiving elements has respective weighting means associated therewith at the decoding means, and is arranged to receive a plurality of signals transmitted from a plurality of transmitters. The weighting means are arranged to apply a complex weighting function to each of a number of the signals received by the receiving elements at a given frequency in order to null the number of signals. The decoding means are arranged to determine a symbol or codeword associated with a non-nulled signal and to incorporate the symbol or codeword in the determination of at least one further symbol or codeword.Type: ApplicationFiled: September 1, 2003Publication date: April 6, 2006Inventors: Paul Fletcher, Michael Dean, Robert Piechocki, Andrew Nix, Nishan Canagarajah, Joe McGeehan