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11.发明专利
公开(公告)号：CA2726107C
公开(公告)日：2015-10-27
申请号：CA2726107
申请日：2009-06-18
Applicant: QUALCOMM INC
Inventor： SIMIC EMILIJA M , FARMER DOMINIC GERARD , RISTIC BORISLAV , BHATIA ASHOK
IPC: H03J1/00
Abstract: A method and device for managing a reference oscillator within a wireless device is presented. The method includes selecting refer-ence oscillator parameters associated with the lowest reference oscillator er-ror, where the selection is based upon reference oscillator parameters de-rived using different technologies within a wireless device, acquiring a satellite based upon the selected reference parameters, determining the qual-ity of the satellite-based position fix, and updating the reference oscillator parameters based upon the quality of the satellite-based position fix. The wireless device includes a wireless communications system, a satellite posi-tioning system (SPS) receiver, a reference oscillator connected to the wire-less communications system and SPS receiver, and a mobile controller con-nected to the reference oscillator, SPS, and wireless communications sys-tem, and a memory connected to the mobile controller, where the memory stores a reference oscillator parameter table and instructions causing the mobile controller to execute the aforementioned method.
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公开(公告)号：ES2403456T3
公开(公告)日：2013-05-20
申请号：ES09774140
申请日：2009-06-25
Applicant: QUALCOMM INC
Inventor： ROWITCH DOUGLAS N , SIMIC EMILIJA M , PALS TIMOTHY PAUL
Abstract: Un procedimiento (400) que comprende: proporcionar un dispositivo de comunicaciones (102) que tiene al menos una interfaz del sistema inalámbrico(306) y al menos un receptor de un sistema de posicionamiento por satélite (SPS) (304), en el que el receptorde SPS está adaptado para operar selectivamente en al menos una primera banda de frecuencias para recibiral menos una primera señal de SPS y una segunda banda de frecuencias para recibir al menos una segundaseñal SPS; y especificar selectivamente (404) que el receptor de SPS opera en una de dichas primera banda de frecuenciaso segunda banda de frecuencias, en base, al menos en parte a al menos una condición operativa asociada condicha interfaz del sistema inalámbrico.
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公开(公告)号：BRPI0407767A
公开(公告)日：2006-04-18
申请号：BRPI0407767
申请日：2004-02-24
Applicant: QUALCOMM INC
Inventor： SIMIC EMILIJA M , PATRICK CHRISTOPHER , ROWITCH DOUGLAS , BLESSENT LUCA , RICK ROLAND
IPC: G01S1/00 , G01S5/02 , G01S5/10 , G01S5/14 , G01S19/06 , G01S19/25 , H04B7/26 , H04W64/00 , H04Q7/38
Abstract: A forward link repeater delay watermarking (FLRDWM) 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) time delay modulation waveform watermark every time a signal passes through the repeater. A mobile station detects and/or identifies the time delay 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 time delay watermarking system can be implemented to achieve low impact on FL and AFLT performance, favorable detection and identification probabilities, and short time-to-detect/identify.
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公开(公告)号：BR0115147A
公开(公告)日：2005-04-19
申请号：BR0115147
申请日：2001-11-05
Applicant: QUALCOMM INC
Inventor： SIMIC EMILIJA M , YOUNIS SAED G , FILIPOVIC DANIEL F
Abstract: Techniques to rotate the phase of a received signal to compensate for phase change or discontinuity introduced by circuit elements located directly in the receive signal path. One or more control signals are received, with each control signal being provided to adjust a particular characteristic of one or more circuit elements associated with the receive signal path. A phase rotation corresponding to an operating state defined by the control signals is then determined, and the phase of the received signal is rotated by an amount related to the determined phase rotation. In some designs, the phase rotation is performed on digitized inphase I IN and quadrature Q IN samples to generate phase rotated I ROT and Q ROT samples. The phase rotation can be performed by a complex multiply (after DC offset compensation) and, for ease of implementation, can be performed digitally in discrete increments (e.g., 90° increments).
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公开(公告)号：AU3067402A
公开(公告)日：2002-05-27
申请号：AU3067402
申请日：2001-11-05
Applicant: QUALCOMM INC
Inventor： SIMIC EMILIJA M , YOUNIS SAED G , FILIPOVIC DANIEL F
Abstract: Techniques to rotate the phase of a received signal to compensate for phase change or discontinuity introduced by circuit elements located directly in the receive signal path. One or more control signals are received, with each control signal being provided to adjust a particular characteristic of one or more circuit elements associated with the receive signal path. A phase rotation corresponding to an operating state defined by the control signals is then determined, and the phase of the received signal is rotated by an amount related to the determined phase rotation. In some designs, the phase rotation is performed on digitized inphase I IN and quadrature Q IN samples to generate phase rotated I ROT and Q ROT samples. The phase rotation can be performed by a complex multiply (after DC offset compensation) and, for ease of implementation, can be performed digitally in discrete increments (e.g., 90° increments).
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Patent Agency Ranking
公开(公告)号：WO2012021413A3
公开(公告)日：2012-05-03
申请号：PCT/US2011046821
申请日：2011-08-05
Applicant: QUALCOMM INC , HOANG DUONG A , ROWITCH DOUGLAS NEAL , WU JIE , SIMIC EMILIJA M , FARMER DOMINIC GERARD
Inventor： HOANG DUONG A , ROWITCH DOUGLAS NEAL , WU JIE , SIMIC EMILIJA M , FARMER DOMINIC GERARD
IPC: G01S19/24
CPC classification number: H04B1/70758 , G01S19/243 , G01S19/246 , H04B2201/70715
Abstract: Techniques are provided which may be implemented using various methods and/or apparatuses in a receiver and/or other like device to determine an SPS time using SPS signals based on a correlation process. A verification process may be performed, for example, that verifies a maximum peak in comparison with other peak information resulting from the correlation process, for example, by considering a ratio of a maximum peak to a next maximum peak. A time-setting algorithm may be selected, for example, based, at least in part, on a time uncertainty and/or on a type of demodulation performed on the SPS signal. The time-setting algorithm may operatively control one or both of the correlation and/verification processes in a desired manner given the time uncertainty and/or type/mode of demodulation performed.
Abstract translation: 提供了可以使用接收机和/或其他类似设备中的各种方法和/或设备来实现的技术，以基于相关过程来确定使用SPS信号的SPS时间。 可以例如通过考虑最大峰值与下一个最大峰值的比率来与例如相关处理产生的其它峰值信息进行比较来验证最大峰值的验证处理。 例如，可以至少部分地基于时间不确定性和/或基于在SPS信号上执行的解调类型来选择时间设置算法。 给定时间不确定性和/或解调的类型/模式，时间设置算法可以以期望的方式可操作地控制一个或两个相关和/验证过程。
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公开(公告)号：WO2006060605A2
公开(公告)日：2006-06-08
申请号：PCT/US2005043529
申请日：2005-12-01
Applicant: QUALCOMM INC , SIMIC EMILIJA M , PATRICK CHRISTOPHER , ROWITCH DOUGLAS N
Inventor： SIMIC EMILIJA M , PATRICK CHRISTOPHER , ROWITCH DOUGLAS N
CPC classification number: G01S19/34 , G01S19/03 , G01S19/21 , G01S19/22 , G01S19/29 , H04B1/7077 , H04K3/228
Abstract: A method according to an embodiment obtains a list of peaks for each of a number of frequency hypotheses. Each peak has an energy result and corresponds to a code phase hypothesis. Embodiments include methods and apparatus that may be used in identifying a location of a signal (such as a GPS signal) in a two-dimensional search space. Location information may be further applied to operations such as signal acquisition, signal tracking, position location of a receiver, and timing operations such as the synchronization of one or more other processes.
Abstract translation: 根据实施例的方法获得多个频率假设中的每一个的峰值列表。 每个峰值具有能量结果，并对应于码相位假设。 实施例包括可以用于识别二维搜索空间中的信号（例如GPS信号）的位置的方法和装置。 位置信息可以进一步应用于诸如信号获取，信号跟踪，接收机的位置定位等操作，以及诸如一个或多个其它过程的同步的定时操作。
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公开(公告)号：WO2010005685A3
公开(公告)日：2010-03-11
申请号：PCT/US2009047276
申请日：2009-06-12
Applicant: QUALCOMM INC , AHMED RIZWAN , SIMIC EMILIJA M
Inventor： AHMED RIZWAN , SIMIC EMILIJA M
CPC classification number: H04B1/7077 , G01S19/30 , H04B1/709 , H04B2201/70715
Abstract: Methods and apparatus for code phase processing in a wireless communication device are described herein. A wireless device performs code phase search on a pseudo random code spread signal received over a wireless channel. A correlator correlates the received signal with a plurality of code phases for each of a plurality of frequency hypotheses. A maximum peak and a second peak are determined from the correlation results. Cross correlation processing is performed on the maximum peak and the maximum peak may be discarded in favor of the second peak for position processing, based on the results of the cross correlation.
Abstract translation: 本文描述了无线通信设备中用于码相位处理的方法和装置。 无线设备对通过无线信道接收的伪随机码扩展信号执行码相搜索。 相关器将接收的信号与多个频率假设中的每一个的多个码相关联。 根据相关结果确定最大峰值和第二峰值。 基于互相关的结果，对最大峰进行互相关处理，并且可以丢弃最大峰以有利于位置处理的第二峰。
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公开(公告)号：EP1880234A4
公开(公告)日：2013-05-01
申请号：EP06770254
申请日：2006-05-10
Applicant: QUALCOMM INC
Inventor： SIMIC EMILIJA M , PATRICK CHRISTOPHER , CHALLA RAGHU , ROWITCH DOUGLAS N
CPC classification number: G01S19/235 , H04B1/26
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公开(公告)号：WO2010019302A3
公开(公告)日：2010-05-20
申请号：PCT/US2009045020
申请日：2009-05-22
Applicant: QUALCOMM INC , AHMED RIZWAN , WU JIE , SIMIC EMILIJA M , FARMER DOMINIC G
Inventor： AHMED RIZWAN , WU JIE , SIMIC EMILIJA M , FARMER DOMINIC G
IPC: G01S1/00
CPC classification number: G01S19/21
Abstract: An apparatus and method for cross-correlation spur mitigation comprising choosing from a plurality of peak measurements, a first peak measurement with a first carrier-to-noise density estimate and a first Doppler offset measurement, and a second peak measurement with a second carrier-to-noise density estimate and a second Doppler offset measurement to form a pair; calculating a carrier-to-noise density difference based on the first carrier-to-noise density estimate and the second carrier-to-noise density estimate; calculating a Doppler difference based on the first Doppler offset measurement and the second Doppler offset measurement; comparing the carrier-to-noise density difference to a carrier-to-noise density threshold; and comparing the Doppler difference to at least one Doppler threshold.
Abstract translation: 一种用于互相关刺激减轻的装置和方法，包括从多个峰值测量中选择具有第一载波噪声密度估计和第一多普勒偏移测量的第一峰值测量，以及使用第二载波 - 噪声密度估计和第二多普勒偏移测量以形成一对; 基于所述第一载波噪声密度估计和所述第二载波噪声密度估计来计算载波噪声密度差; 基于第一多普勒偏移测量和第二多普勒偏移测量来计算多普勒差; 将载波噪声密度差与载波噪声密度阈值进行比较; 以及将多普勒差异与至少一个多普勒阈值进行比较。
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