Patents by Inventor Hendrik Johannes Conroy
Hendrik Johannes Conroy 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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Publication number: 20140086281Abstract: Methods and systems for processing signals in a wireless communication system are disclosed. Aspects of the method may include calculating at a receiver, a plurality of energy values corresponding to a plurality of signal paths detected within a communication channel. At least one of the plurality of detected signal paths may be selected for processing based on a pre-defined threshold and a dynamic threshold, in order to achieve a desired probability of misdetection and a desired probability of false alarm. The probability of misdetection is a probability that a real signal path is missed, and the probability of false alarm is a probability of detecting a false signal path. A slot boundary, a frame boundary, and/or a scrambling code may be determined for signals communicated via said plurality of signal paths.Type: ApplicationFiled: November 25, 2013Publication date: March 27, 2014Applicant: BROADCOM CORPORATIONInventors: Li Fung CHANG, Hendrik Johannes CONROY, Severine CATREUX-ERCEG
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Publication number: 20120128108Abstract: Aspects of a method and system for a sliding window phase estimator for wideband code division multiple access (WCDMA) automatic frequency correction are presented. Aspects of the system may include one or more circuits that enable adjustment of a current demodulation frequency for receiving at least one subsequent symbol based on a computed weighted sum of a plurality of computed frequency error values. Each of the plurality of computed frequency error values may be derived from a current symbol, a corresponding previous symbol, and/or a previous frequency error value. The current symbol may include a current received symbol segment and one or more previously received symbol segments.Type: ApplicationFiled: November 22, 2011Publication date: May 24, 2012Applicant: Broadcom CorporationInventors: Hendrik Johannes Conroy, Joseph Boccuzzi
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Patent number: 8068568Abstract: Aspects of a method and system for a sliding window phase estimator for wideband code division multiple access (WCDMA) automatic frequency correction are presented. Aspects of the system may include one or more circuits that enable adjustment of a current demodulation frequency for receiving at least one subsequent symbol based on a computed weighted sum of a plurality of computed frequency error values. Each of the plurality of computed frequency error values may be derived from a current symbol, a corresponding previous symbol, and/or a previous frequency error value. The current symbol may include a current received symbol segment and one or more previously received symbol segments.Type: GrantFiled: January 12, 2011Date of Patent: November 29, 2011Assignee: Broadcom CorporationInventors: Hendrik Johannes Conroy, Joseph Boccuzzi
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Patent number: 8031757Abstract: A method for operating a Radio Frequency (RF) receiver of a wireless terminal. During a first time interval, an RF front end is enabled and the RF receiver receives and processes an RF signal, e.g., a Wideband Code Division Multiple Access (WCDMA) signal, to produce a baseband signal and to store samples of the baseband signal. During a second time interval that differs from the first time interval, the RF front end is disabled and the RF receiver processes the plurality of samples of the baseband signal of the first time interval to measure signal strengths of a plurality of pilot signals present in the baseband signal of the first time interval. Finally, during a third time interval that differs from the first time interval and the second time interval, the RF front end is enabled and the RF receiver receives and processes an RF signal of the third time interval to extract data there from. Memory is shared between the first, second, and third time intervals for different uses.Type: GrantFiled: June 25, 2010Date of Patent: October 4, 2011Assignee: Broadcom CorporationInventors: Louis Jacobus Botha, Frederic Christian Hayem, Hendrik Johannes Conroy
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Publication number: 20110110466Abstract: Aspects of a method and system for a sliding window phase estimator for wideband code division multiple access (WCDMA) automatic frequency correction are presented. Aspects of the system may include one or more circuits that enable adjustment of a current demodulation frequency for receiving at least one subsequent symbol based on a computed weighted sum of a plurality of computed frequency error values. Each of the plurality of computed frequency error values may be derived from a current symbol, a corresponding previous symbol, and/or a previous frequency error value. The current symbol may include a current received symbol segment and one or more previously received symbol segments.Type: ApplicationFiled: January 12, 2011Publication date: May 12, 2011Inventors: Hendrik Johannes Conroy, Joseph Boccuzzi
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Patent number: 7894404Abstract: A wireless terminal is operable to receive a Wideband Code Division Multiple Access (WCDMA) signal from a base station and includes clock circuitry, a wireless interface, and a Primary Synchronization (PSYNC) module. The clock circuitry generates a wireless terminal clock using a wireless terminal oscillator. The wireless interface receives the WCDMA signal, which is produced by the base station using a base station clock that is produced using a base station oscillator that is more accurate than the wireless terminal oscillator. The PSYNC module includes a plurality of PSYNC correlation branches. Each PSYNC correlation branch phase rotates the WCDMA signal based upon a respective frequency offset, correlates the phase rotated WCDMA signal with a Primary Synchronization Channel (PSCH) code over a plurality of sampling positions, and produces PSYNC correlation energies based upon the correlations for each of the plurality of sampling positions.Type: GrantFiled: August 23, 2007Date of Patent: February 22, 2011Assignee: Broadcom CorporationInventors: Mark David Hahm, Wei Luo, Hendrik Johannes Conroy
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Patent number: 7885319Abstract: A wireless terminal is operable to receive a Wideband Code Division Multiple Access (WCDMA) signal from a base station and includes clock circuitry, a wireless interface, and a Primary Synchronization (PSYNC) module. The clock circuitry generates a wireless terminal clock using a wireless terminal oscillator. The wireless interface receives the WCDMA signal, which is produced by the base station using a base station clock that is produced using a base station oscillator that is more accurate than the wireless terminal oscillator. The PSYNC module includes a plurality of PSYNC correlation branches. Each PSYNC correlation branch phase rotates the WCDMA signal based upon a respective frequency offset, correlates the phase rotated WCDMA signal with a Primary Synchronization Channel (PSCH) code over a plurality of sampling positions, and produces PSYNC correlation energies based upon the correlations for each of the plurality of sampling positions.Type: GrantFiled: September 10, 2007Date of Patent: February 8, 2011Assignee: Broadcom CorporationInventors: Mark David Hahm, Wei Luo, Li Fung Chang, Nelson R. Sollenberger, Hendrik Johannes Conroy
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Patent number: 7885237Abstract: A wireless terminal is operable to receive a Wideband Code Division Multiple Access (WCDMA) signal from a base station and includes clock circuitry, a wireless interface, and a Primary Synchronization (PSYNC) module. The clock circuitry generates a wireless terminal clock using a wireless terminal oscillator. The wireless interface receives the WCDMA signal, which is produced by the base station using a base station clock that is produced using a base station oscillator that is more accurate than the wireless terminal oscillator. The PSYNC module includes a plurality of PSYNC correlation branches. Each PSYNC correlation branch phase rotates the WCDMA signal based upon a respective frequency offset, correlates the phase rotated WCDMA signal with a Primary Synchronization Channel (PSCH) code over a plurality of sampling positions, and produces PSYNC correlation energies based upon the correlations for each of the plurality of sampling positions.Type: GrantFiled: August 23, 2007Date of Patent: February 8, 2011Assignee: Broadcom CorporationInventors: Mark David Hahm, Wei Luo, Hendrik Johannes Conroy
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Patent number: 7873125Abstract: Aspects of a method and system for a sliding window phase estimator for wideband code division multiple access (WCDMA) automatic frequency correction are presented. Aspects of the system may include one or more circuits that enable adjustment of a current demodulation frequency for receiving at least one subsequent symbol based on a computed weighted sum of a plurality of computed frequency error values. Each of the plurality of computed frequency error values may be derived from a current symbol, a corresponding previous symbol, and/or a previous frequency error value. The current symbol may include a current received symbol segment and one or more previously received symbol segments.Type: GrantFiled: November 30, 2006Date of Patent: January 18, 2011Assignee: Broadcom CorporationInventors: Hendrik Johannes Conroy, Joseph Boccuzzi
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Publication number: 20100265995Abstract: A method for operating a Radio Frequency (RF) receiver of a wireless terminal. During a first time interval, an RF front end is enabled and the RF receiver receives and processes an RF signal, e.g., a Wideband Code Division Multiple Access (WCDMA) signal, to produce a baseband signal and to store samples of the baseband signal. During a second time interval that differs from the first time interval, the RF front end is disabled and the RF receiver processes the plurality of samples of the baseband signal of the first time interval to measure signal strengths of a plurality of pilot signals present in the baseband signal of the first time interval. Finally, during a third time interval that differs from the first time interval and the second time interval, the RF front end is enabled and the RF receiver receives and processes an RF signal of the third time interval to extract data there from. Memory is shared between the first, second, and third time intervals for different uses.Type: ApplicationFiled: June 25, 2010Publication date: October 21, 2010Applicant: BROADCOM CORPORATIONInventors: LOUIS JACOBUS BOTHA, FREDERIC CHRISTIAN HAYEM, HENDRIK JOHANNES CONROY
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Patent number: 7756193Abstract: A method for operating a Radio Frequency (RF) receiver of a wireless terminal. During a first time interval, an RF front end is enabled and the RF receiver receives and processes an RF signal, e.g., a Wideband Code Division Multiple Access (WCDMA) signal, to produce a baseband signal and to store samples of the baseband signal. During a second time interval that differs from the first time interval, the RF front end is disabled and the RF receiver processes the plurality of samples of the baseband signal of the first time interval to measure signal strengths of a plurality of pilot signals present in the baseband signal of the first time interval. Finally, during a third time interval that differs from the first time interval and the second time interval, the RF front end is enabled and the RF receiver receives and processes an RF signal of the third time interval to extract data there from. Memory is shared between the first, second, and third time intervals for different uses.Type: GrantFiled: September 21, 2006Date of Patent: July 13, 2010Assignee: Broadcom CorporationInventors: Louis Jacobus Botha, Frederic Christian Marc Hayem, Hendrik Johannes Conroy
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Publication number: 20090034589Abstract: A wireless terminal is operable to receive a Wideband Code Division Multiple Access (WCDMA) signal from a base station and includes clock circuitry, a wireless interface, and a Primary Synchronization (PSYNC) module. The clock circuitry generates a wireless terminal clock using a wireless terminal oscillator. The wireless interface receives the WCDMA signal, which is produced by the base station using a base station clock that is produced using a base station oscillator that is more accurate than the wireless terminal oscillator. The PSYNC module includes a plurality of PSYNC correlation branches. Each PSYNC correlation branch phase rotates the WCDMA signal based upon a respective frequency offset, correlates the phase rotated WCDMA signal with a Primary Synchronization Channel (PSCH) code over a plurality of sampling positions, and produces PSYNC correlation energies based upon the correlations for each of the plurality of sampling positions.Type: ApplicationFiled: September 10, 2007Publication date: February 5, 2009Applicant: BROADCOM CORPORATIONInventors: Mark David Hahm, Wei Luo, Li Fung Chang, Nelson R. Sollenberger, Hendrik Johannes Conroy
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Publication number: 20090034490Abstract: A wireless terminal is operable to receive a Wideband Code Division Multiple Access (WCDMA) signal from a base station and includes clock circuitry, a wireless interface, and a Primary Synchronization (PSYNC) module. The clock circuitry generates a wireless terminal clock using a wireless terminal oscillator. The wireless interface receives the WCDMA signal, which is produced by the base station using a base station clock that is produced using a base station oscillator that is more accurate than the wireless terminal oscillator. The PSYNC module includes a plurality of PSYNC correlation branches. Each PSYNC correlation branch phase rotates the WCDMA signal based upon a respective frequency offset, correlates the phase rotated WCDMA signal with a Primary Synchronization Channel (PSCH) code over a plurality of sampling positions, and produces PSYNC correlation energies based upon the correlations for each of the plurality of sampling positions.Type: ApplicationFiled: August 23, 2007Publication date: February 5, 2009Applicant: BROADCOM CORPORATIONInventors: Mark David Hahm, Wei Luo, Hendrik Johannes Conroy
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Publication number: 20090034482Abstract: A wireless terminal is operable to receive a Wideband Code Division Multiple Access (WCDMA) signal from a base station and includes clock circuitry, a wireless interface, and a Primary Synchronization (PSYNC) module. The clock circuitry generates a wireless terminal clock using a wireless terminal oscillator. The wireless interface receives the WCDMA signal, which is produced by the base station using a base station clock that is produced using a base station oscillator that is more accurate than the wireless terminal oscillator. The PSYNC module includes a plurality of PSYNC correlation branches. Each PSYNC correlation branch phase rotates the WCDMA signal based upon a respective frequency offset, correlates the phase rotated WCDMA signal with a Primary Synchronization Channel (PSCH) code over a plurality of sampling positions, and produces PSYNC correlation energies based upon the correlations for each of the plurality of sampling positions.Type: ApplicationFiled: August 23, 2007Publication date: February 5, 2009Applicant: BROADCOM CORPORATIONInventors: Mark David Hahm, Wei Luo, Hendrik Johannes Conroy
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Publication number: 20080130802Abstract: Aspects of a method and system for a sliding window phase estimator for wideband code division multiple access (WCDMA) automatic frequency correction are presented. Aspects of the system may include one or more circuits that enable adjustment of a current demodulation frequency for receiving at least one subsequent symbol based on a computed weighted sum of a plurality of computed frequency error values. Each of the plurality of computed frequency error values may be derived from a current symbol, a corresponding previous symbol, and/or a previous frequency error value. The current symbol may include a current received symbol segment and one or more previously received symbol segments.Type: ApplicationFiled: November 30, 2006Publication date: June 5, 2008Inventors: Hendrik Johannes Conroy, Joseph Boccuzzi
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Publication number: 20080130606Abstract: Methods and systems for processing signals in a wireless communication system are disclosed. Aspects of the method may include calculating at a receiver, a plurality of energy values corresponding to a plurality of signal paths detected within a communication channel. At least one of the plurality of detected signal paths may be selected for processing based on a pre-defined threshold and a dynamic threshold, in order to achieve a desired probability of misdetection and a desired probability of false alarm. The probability of misdetection is a probability that a real signal path is missed, and the probability of false alarm is a probability of detecting a false signal path. A slot boundary, a frame boundary, and/or a scrambling code may be determined for signals communicated via said plurality of signal paths.Type: ApplicationFiled: November 30, 2006Publication date: June 5, 2008Inventors: Li Fung Chang, Hendrik Johannes Conroy, Severine Catreus-Erceg
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Publication number: 20080075149Abstract: A method for operating a Radio Frequency (RF) receiver of a wireless terminal. During a first time interval, an RF front end is enabled and the RF receiver receives and processes an RF signal, e.g., a Wideband Code Division Multiple Access (WCDMA) signal, to produce a baseband signal and to store samples of the baseband signal. During a second time interval that differs from the first time interval, the RF front end is disabled and the RF receiver processes the plurality of samples of the baseband signal of the first time interval to measure signal strengths of a plurality of pilot signals present in the baseband signal of the first time interval. Finally, during a third time interval that differs from the first time interval and the second time interval, the RF front end is enabled and the RF receiver receives and processes an RF signal of the third time interval to extract data there from. Memory is shared between the first, second, and third time intervals for different uses.Type: ApplicationFiled: September 21, 2006Publication date: March 27, 2008Applicant: Broadcom Corporation, a California CorporationInventors: Louis Jacobus Botha, Frederic Christian Hayem, Hendrik Johannes Conroy