公开(公告)号：WO2010019302A2

公开(公告)日：2010-02-18

申请号：PCT/US2009/045020

申请日：2009-05-22

Applicant: QUALCOMM Incorporated ,  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: 一种用于互相关杂散抑制的装置和方法，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 具有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的第二峰值测量; 基于所述第一载波噪声密度估计值和所述第二载波噪声密度估计值来计算载波噪声密度差; 基于所述第一多普勒偏移测量值和所述第二多普勒偏移测量值计算多普勒差值; 将载波与噪声密度差异与载波与噪声密度阈值进行比较; 并将多普勒差异与至少一个多普勒阈值进行比较。

公开(公告)号：WO2006122293A2

公开(公告)日：2006-11-16

申请号：PCT/US2006/018375

申请日：2006-05-10

Applicant: QUALCOMM INCORPORATED ,  SIMIC, Emilija, M. ,  PATRICK, Christopher ,  CHALLA, Raghu ,  ROWITCH, Douglas, N.

Inventor： SIMIC, Emilija, M. ,  PATRICK, Christopher ,  CHALLA, Raghu ,  ROWITCH, Douglas, N.

IPC: G01S13/74

CPC classification number: G01S19/235 ,  H04B1/26

Abstract: A receiver according to one embodiment includes a frequency control unit configured to receive a stream of samples including a plurality of received instances of a transmitted signal. The frequency control unit is configured to output a first correction signal (e.g. indicating a rotation) that is based on more than one of the received instances and a second correction signal (e.g. to control an oscillator) that is also based on more than one of the received instances. In some embodiments, a controlled oscillator is used to receive and/or transmit another signal, such as a signal received from a GPS space vehicle. In other embodiments, the received instances are from a GPS signal. In further embodiments, a fixed-frequency oscillator is used, and the second correction signal is used to receive and/or transmit another signal, such as a GPS signal.

Abstract translation: 根据一个实施例的接收机包括：频率控制单元，被配置为接收包括发射信号的多个接收的实例的样本流。 频率控制单元被配置为输出基于多于一个接收到的实例的第一校正信号（例如指示旋转）和还基于多个接收实例中的多于一个的第二校正信号（例如，以控制振荡器） 接收的实例。 在一些实施例中，受控振荡器用于接收和/或发送另一信号，例如从GPS空中交通工具接收的信号。 在其他实施例中，所接收的实例来自GPS信号。 在另外的实施例中，使用固定频率振荡器，并且第二校正信号用于接收和/或发送诸如GPS信号的另一信号。

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

IPC: G01S1/00 ,  G01S19/03 ,  G01S19/21 ,  G01S19/22 ,  G01S19/29 ,  G01S19/34 ,  H04B1/707

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。

公开(公告)号：WO2004077698A1

公开(公告)日：2004-09-10

申请号：PCT/US2004/005315

申请日：2004-02-24

Applicant: QUALCOMM, INCORPORATED ,  SIMIC, Emilija, M. ,  PATRICK, Christopher ,  ROWITCH, Douglas ,  BLESSENT, Luca ,  RICK, Roland

Inventor： SIMIC, Emilija, M. ,  PATRICK, Christopher ,  ROWITCH, Douglas ,  BLESSENT, Luca ,  RICK, Roland

IPC: H04B7/26

CPC classification number: H04W64/00 ,  G01S5/0226 ,  G01S5/0273 ,  G01S5/10 ,  G01S19/09 ,  G01S19/11 ,  G01S19/46 ,  H04B7/155 ,  H04B7/2606

Abstract: A forward link repeater delay 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) 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.

Abstract translation: 一种前向链路中继器延迟水印（FLRFWM）系统和方法，其通过对具有中继器信息的重复信号进行水印来实现移动站在存在中继器的区域中的准确位置定位。 中继器每当信号通过中继器时对具有（唯一或非唯一）时间延迟调制波形水印的前向链路信号进行水印。 移动台在前向链路信号上检测和/或识别时间延迟水印，以确定使用AFLT和/或A-GPS系统来帮助网络位置确定实体或移动台位置系统确定位置定位的中继器信息。 可以实现前向链路时间延迟水印系统，以实现对FL和AFLT性能的低影响，良好的检测和识别概率，以及短时间的检测/识别。

公开(公告)号：WO2010135302A1

公开(公告)日：2010-11-25

申请号：PCT/US2010/035222

申请日：2010-05-18

Applicant: QUALCOMM INCORPORATED ,  BHATIA, Ashok ,  FARMER, Dominic, Gerard ,  SIMIC, Emilija, M. ,  AGARWAL, Vishal

Inventor： BHATIA, Ashok ,  FARMER, Dominic, Gerard ,  SIMIC, Emilija, M. ,  AGARWAL, Vishal

IPC: G01S1/00

CPC classification number: G01S19/256 ,  G01S19/235

Abstract: Methods and apparatus are provided for use in devices operatively enabled to establish timing signal offset data and/or utilize such established offset data.

Abstract translation: 提供的方法和装置用于可操作地使得能够建立定时信号偏移数据和/或利用这种已建立的偏移数据的装置。

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。

公开(公告)号：WO2010005685A2

公开(公告)日：2010-01-14

申请号：PCT/US2009/047276

申请日：2009-06-12

Applicant: QUALCOMM INCORPORATED ,  AHMED, Rizwan ,  SIMIC, Emilija, M.

Inventor： AHMED, Rizwan ,  SIMIC, Emilija, M.

IPC: H04B1/707

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 to a plurality of code phases in each of a plurality of frequency hypothesis. 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 is 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中的多个码相关联。 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，并舍弃最大峰，有利于位置处理的第二峰。

公开(公告)号：WO2009146293A1

公开(公告)日：2009-12-03

申请号：PCT/US2009/045030

申请日：2009-05-22

Applicant: QUALCOMM INCORPORATED ,  SIMIC, Emilija, M. ,  GROVER, Douglas ,  AHMED, Rizwan

Inventor： SIMIC, Emilija, M. ,  GROVER, Douglas ,  AHMED, Rizwan

IPC: G01S1/00

CPC classification number: G01S19/21 ,  G01S19/22 ,  G01S19/30

Abstract: Methods and apparatus are provided for use in devices adapted to receive signals from at least one satellite positioning system (SPS). As part of at least one search for a transmission from a space vehicle (SV) associated with the SPS, the methods and apparatuses may correlate a code associated with the SV with a received signal to establish a plurality of correlation values, sample at least a portion of the correlation values during the search, and selectively transitioning the search early or prematurely based, at least in part, on at least one of the sampled correlation values.

Abstract translation: 提供了用于适于从至少一个卫星定位系统（SPS）接收信号的设备中使用的方法和装置。 作为至少一次搜索与SPS相关联的空间飞行器（SV）的传输的一部分，方法和装置可以将与SV相关的代码与接收的信号相关联，以建立多个相关值，至少采样 在搜索期间相关值的一部分，以及至少部分地基于采样的相关值中的至少一个来选择性地早期或过早地选择性地转换搜索。

公开(公告)号：WO2009073522A1

公开(公告)日：2009-06-11

申请号：PCT/US2008/084890

申请日：2008-11-26

Applicant: QUALCOMM INCORPORATED ,  FARMER, Dominic, Gerard ,  SIMIC, Emilija, M. ,  WU, Jie

Inventor： FARMER, Dominic, Gerard ,  SIMIC, Emilija, M. ,  WU, Jie

IPC: G01S1/00

CPC classification number: G01S19/29

Abstract: An apparatus and method for tracking a desired signal by sequentially tracking the desired signal with a variable integration time, performing automatic frequency control of the desired signal, and demodulating the desired signal using offline software. In one aspect, the automatic frequency control is performed using the offline software. In one aspect, the desired signal is from a GPS satellite.

Abstract translation: 一种用于通过以可变积分时间顺序跟踪期望信号来跟踪期望信号的装置和方法，执行所需信号的自动频率控制，以及使用离线软件解调所需信号。 一方面，使用离线软件进行自动频率控制。 在一个方面，期望的信号来自GPS卫星。

公开(公告)号：WO2010111405A2

公开(公告)日：2010-09-30

申请号：PCT/US2010028520

申请日：2010-03-24

Applicant: QUALCOMM INC ,  FARMER DOMINIC GERARD ,  WU JIE ,  SIMIC EMILIJA M

Inventor： FARMER DOMINIC GERARD ,  WU JIE ,  SIMIC EMILIJA M

IPC: H04B1/707

CPC classification number: H04B1/7117 ,  G01S19/22 ,  H04B1/709

Abstract: A multipath detector includes an RF module receiving multiple signals, and a correlator module receiving the signals from the RF module. The correlator module correlates the signals to create a composite ACF, and produces samples of the composite autocorrelation function (ACF). The samples are time delayed relative to each other. The multipath detector also includes a carrier phase processor that receives the samples and estimates carrier phases associated with each of the samples. The carrier phase processor employs the estimated carrier phases to determine if one of the signals is subject to a multipath delay.

Abstract translation: 多路径检测器包括接收多个信号的RF模块和从RF模块接收信号的相关器模块。 相关器模块将信号相关联以产生复合ACF，并且产生复合自相关函数（ACF）的样本。 样品相对于彼此是时间延迟的。 多径检测器还包括载波相位处理器，其接收采样并估计与每个采样相关联的载波相位。 载波相位处理器使用估计的载波相位来确定信号中的一个是否经受多径延迟。