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11.发明专利
公开(公告)号：CA2499415A1
公开(公告)日：2004-05-06
申请号：CA2499415
申请日：2003-10-22
Applicant: QUALCOMM INC
Inventor： SIMIC EMILIJA , PATRICK CHRISTOPHER , ROWITCH DOUGLAS NEAL
Abstract: Position determination accuracy of a wireless communication device may be negatively affected by a large unaccounted GPS doppler bias, which in turn m ay affect GPS doppler estimations and GPS doppler measurements conducted by the wireless communication device. The quality of GPS doppler measurements is ve ry important for position location, because poor quality GPS doppler measuremen ts may prevent the wireless communication device from acquiring satellites in t he most sensitive modes with narrow frequency ranges, which results in reduced GPS pseudorange measurement yield. Large unaccounted GPS doppler bias also adversely affects position accuracy because of the adverse effect on the GPS code phase measurements time propagation to common time prior to their use i n position location calculation. The same is true in the case of unaccounted CDMA code doppler, through the adverse effect on the AFLT code phase measurements time propagation to common time prior to their use in a positio n location engine. This effect is the biggest concern in the case of large search windows. Therefore, the present disclosure provides a method of optimizing GPS based position location in the presence of time-varying frequency error, including the steps of continuously measuring and/or calculating resulting GPS doppler bias and CDMA code doppler bias and then minimizing their adverse effects with regard to position location determination by re-centering GPS doppler search windows based on the GPS doppler bias value, as well as using GPS doppler bias and CDMA code doppler bias value to properly propagate GPS pseudorange and AFLT pilot phase measurements, respectively, to common time prior to their use in a position location engine.
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公开(公告)号：CA2621145A1
公开(公告)日：2001-09-13
申请号：CA2621145
申请日：2001-03-02
Applicant: QUALCOMM INC
Inventor： LIN MING JASON YU , WILBORN THOMAS , FILIPOVIC DANIEL , KAUFMAN RALPH , YOUNIS SAED , ZHANG HAITAO , SIMIC EMILIJA
Abstract: Transmitter architectures for a communications system having improved performance over conventional transmitter architectures. The improvements include a combination of the following: faster response time for the control signals, improved linearity, reduced interference, reduced power consumption, lower circuit complexity, and lower costs. For a cellular application, these improvements can lead to increased system capacity, smaller telephone size, increased talk and standby times, and greater acceptance of the product. Circuitry is provided to speed up the response time of a control signal. The control loop for various elements in the transmit signal path are integrated. A gain control mechanism allows for accurate adjustment of the output transmit power level. Control mechanisms are provided to power down the power amplifier, or th e entire transmit signal path, when not needed. The gains of the various elements in the transmit signal path are controlled to reduce transients in the output transmit power, and to also ensure that transients are downward.
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公开(公告)号：CA2401891A1
公开(公告)日：2001-09-13
申请号：CA2401891
申请日：2001-03-02
Applicant: QUALCOMM INC
Inventor： YOUNIS SAED , WILBORN THOMAS , SIMIC EMILIJA , LIN JIAN , KAUFMAN RALPH , ZHANG HAITAO , FILIPOVIC DANIEL
Abstract: Transmitter architectures for a communications system having improved performance over conventional transmitter architectures. The improvements include a combination of the following: faster response time for the control signals, improved linearity, reduced interference, reduced power consumption , lower circuit complexity, and lower costs. For a cellular application, these improvements can lead to increased system capacity, smaller telephone size, increased talk and standby times, and greater acceptance of the product. Circuitry is provided to speed up the response time of a control signal. The control loop for various elements in the transmit signal path are integrated . A gain control mechanism allows for accurate adjustment of the output transm it power level. Control mechanisms are provided to power down the power amplifier, or th e entire transmit signal path, when not needed. The gains o f the various elements in the transmit signal path are controlled to reduce transients in the output transmit power, and to also ensure that transients are downward.
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公开(公告)号：ES2352546T3
公开(公告)日：2011-02-21
申请号：ES04714204
申请日：2004-02-23
Applicant: QUALCOMM INC
Inventor： PATRICK CHRISTOPHER , SIMIC EMILIJA
Abstract: Un repetidor (16) para amplificar una señal de enlace directo desde una estación base (10) a una estación móvil (22), en el que la estación móvil (22) tiene un bucle de seguimiento de la frecuencia, comprendiendo el repetidor: un amplificador (33) para amplificar la señal de enlace directo desde la estación base a la estación móvil; y caracterizado por un modulador (34) de frecuencia rápida que modula la frecuencia de la señal (31) de enlace directo con una marca de agua de frecuencia rápida identificativa según pasa por el repetidor, en el que dicha marca de agua tiene una frecuencia tal que el bucle de seguimiento de la frecuencia sustancialmente no detecta dicha marca de agua en dicha estación móvil.
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公开(公告)号：DE60143721D1
公开(公告)日：2011-02-03
申请号：DE60143721
申请日：2001-03-02
Applicant: QUALCOMM INC
Inventor： YOUNIS SAED , SIMIC EMILIJA , WILBORN THOMAS , ZHANG HAITAO , FILIPOVIC DANIEL , KAUFMAN RALPH , LIN JIAN
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Patent Agency Ranking
公开(公告)号：ES2335644T3
公开(公告)日：2010-03-31
申请号：ES01916349
申请日：2001-03-02
Applicant: QUALCOMM INC
Inventor： YOUNIS SAED , SIMIC EMILIJA , WILBORN THOMAS , ZHANG HAITAO , FILIPOVIC DANIEL , KAUFMAN RALPH
Abstract: Un procedimiento para ajustar una ganancia de un elemento (220) de circuito en un transmisor, comprendiendo el procedimiento: recibir (412) una señal de control de ganancia que incluye valores de configuración de ganancia para el elemento de circuito; caracterizado por las etapas de: generar (412) impulsos de sobreexcitación correspondientes a cambios en los valores de configuración de ganancia en la señal de control de ganancia; sumar (412) los impulsos de sobreexcitación con los valores de configuración de ganancia para generar una señal de control ajustada; filtrar (242) la señal de control ajustada para generar una señal de control filtrada; y ajustar la ganancia del elemento (220) de circuito de acuerdo a la señal de control filtrada.
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公开(公告)号：AU2006203601B2
公开(公告)日：2009-11-12
申请号：AU2006203601
申请日：2006-08-21
Applicant: QUALCOMM INC
Inventor： ZHANG HAITAO , SIMIC EMILIJA , LIN JIAN , FILIPOVIC DANIEL , WILBORN THOMAS , KAUFMAN RALPH , YOUNIS SAED G
Abstract: Transmitter architectures for a communications system having improved performance over conventional transmitter architectures. The improvements include a combination of the following: faster response time for the control signals, improved linearity, reduced interference, reduced power consumption, lower circuit complexity, and lower costs. For a cellular application, these improvements can lead to increased system capacity, smaller telephone size, increased talk and standby times, and greater acceptance of the product. Circuitry is provided to speed up the response time of a control signal. The control loop for various elements in the transmit signal path are integrated. A gain control mechanism allows for accurate adjustment of the output transmit power level. Control mechanisms are provided to power down the power amplifier, or th e entire transmit signal path, when not needed. The gains of the various elements in the transmit signal path are controlled to reduce transients in the output transmit power, and to also ensure that transients are downward.
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公开(公告)号：AU2006203600B2
公开(公告)日：2008-05-29
申请号：AU2006203600
申请日：2006-08-21
Applicant: QUALCOMM INC
Inventor： WILBORN THOMAS , LIN JIAN , ZHANG HAITAO , SIMIC EMILIJA , KAUFMAN RALPH , YOUNIS SAED G , FILIPOVIC DANIEL
Abstract: Transmitter architectures for a communications system having improved performance over conventional transmitter architectures. The improvements include a combination of the following: faster response time for the control signals, improved linearity, reduced interference, reduced power consumption, lower circuit complexity, and lower costs. For a cellular application, these improvements can lead to increased system capacity, smaller telephone size, increased talk and standby times, and greater acceptance of the product. Circuitry is provided to speed up the response time of a control signal. The control loop for various elements in the transmit signal path are integrated. A gain control mechanism allows for accurate adjustment of the output transmit power level. Control mechanisms are provided to power down the power amplifier, or th e entire transmit signal path, when not needed. The gains of the various elements in the transmit signal path are controlled to reduce transients in the output transmit power, and to also ensure that transients are downward.
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公开(公告)号：HK1092608A1
公开(公告)日：2007-02-09
申请号：HK06112883
申请日：2006-11-23
Applicant: QUALCOMM INC
Inventor： SIMIC EMILIJA , PATRIK CHRISTOPHER
Abstract: A forward link repeater frequency watermarking (FLRFWM) system and method that enable accurate position location of mobile stations in areas where repeaters are present by watermarking repeated signals with repeater information. A repeater watermarks a forward link signal with a (unique or non-unique) fast frequency modulation waveform watermark every time a signal passes through the repeater. A mobile station detects and/or identifies the fast frequency watermark on the forward link signal to determine repeater information that aids the network position determination entity or mobile station position location system in determining position location using AFLT and/or A-GPS systems. A forward link fast frequency watermarking system described herein achieves minimal impact on FL, AFLT, and GPS performance, good detection, identification and false alarm probabilities, short time-to-detect/identify, and good detection/identification sensitivity.
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公开(公告)号：AU2006203601A1
公开(公告)日：2006-09-07
申请号：AU2006203601
申请日：2006-08-21
Applicant: QUALCOMM INC
Inventor： ZHANG HAITAO , SIMIC EMILIJA , LIN JIAN , FILIPOVIC DANIEL , WILBORN THOMAS , KAUFMAN RALPH , YOUNIS SAED G
Abstract: Transmitter architectures for a communications system having improved performance over conventional transmitter architectures. The improvements include a combination of the following: faster response time for the control signals, improved linearity, reduced interference, reduced power consumption, lower circuit complexity, and lower costs. For a cellular application, these improvements can lead to increased system capacity, smaller telephone size, increased talk and standby times, and greater acceptance of the product. Circuitry is provided to speed up the response time of a control signal. The control loop for various elements in the transmit signal path are integrated. A gain control mechanism allows for accurate adjustment of the output transmit power level. Control mechanisms are provided to power down the power amplifier, or th e entire transmit signal path, when not needed. The gains of the various elements in the transmit signal path are controlled to reduce transients in the output transmit power, and to also ensure that transients are downward.
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