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公开(公告)号：US06721368B1
公开(公告)日：2004-04-13
申请号：US09519734
申请日：2000-03-04
申请人： Saed Younis , Emilija Simic , Thomas Wilborn , Haitao Zhang , Daniel Filipovic , Ralph Kaufman , Ming (Jason) Yu Lin
发明人： Saed Younis , Emilija Simic , Thomas Wilborn , Haitao Zhang , Daniel Filipovic , Ralph Kaufman , Ming (Jason) Yu Lin
IPC分类号： H04L2704
CPC分类号： H03G3/3042 , H03F2203/7239 , H03G1/0088
摘要： 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 the 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.
摘要翻译： 具有比传统发射机架构具有改进性能的通信系统的发射机架构。 这些改进包括以下组合：控制信号的响应时间更快，线性度更好，干扰减少，功耗降低，电路复杂度降低，成本降低。 对于蜂窝应用，这些改进可以导致系统容量增加，电话尺寸更小，通话和待机时间增加，以及对产品的更多接受。 提供电路以加快控制信号的响应时间。 发送信号路径中的各种元件的控制回路被集成。 增益控制机制允许精确调整输出发射功率电平。 提供控制机制以在不需要时将功率放大器或整个发射信号路径断电。 控制发射信号路径中的各种元件的增益以减少输出发射功率的瞬变，并且还确保瞬变是向下的。
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公开(公告)号：US06292122B1
公开(公告)日：2001-09-18
申请号：US09517766
申请日：2000-03-04
申请人： Saed Younis , Emilija Simic , Thomas Wilborn
发明人： Saed Younis , Emilija Simic , Thomas Wilborn
IPC分类号： H03M300
CPC分类号： H03F3/24 , H03F2200/331 , H03G3/3036 , H03M3/374 , H03M3/50 , H03M7/3031
摘要： An interface circuit for converting a digital signal to an analog signal. The interface circuit includes a time response adjustment circuit, a modulator, and a filter. The time response adjustment circuit receives the digital signal and generates an adjusted signal. The modulator couples to the time response adjustment circuit, receives the adjusted signal, and generates a modulator signal. The filter couples to the modulator, receives the modulator signal, and generates the analog signal. The analog signal has a time response that is modified by the time response adjustment circuit. In an embodiment, the time response adjustment circuit includes a gain element, a delay element, and a summer. The gain element receives and scales the digital signal by a scaling factor. The delay element receives and delays the digital signal by a time delay. The summer couples to the gain element and the delay element, sums the scaled signal from the gain element and the delayed signal from the delay element to generate the adjusted signal.
摘要翻译： 一种用于将数字信号转换为模拟信号的接口电路。 接口电路包括时间响应调整电路，调制器和滤波器。 时间响应调整电路接收数字信号并产生调整信号。 调制器耦合到时间响应调整电路，接收经调整的信号，并产生调制器信号。 滤波器耦合到调制器，接收调制器信号，并产生模拟信号。 模拟信号具有由时间响应调整电路修改的时间响应。 在一个实施例中，时间响应调整电路包括增益元件，延迟元件和加法器。 增益元件以缩放因子接收和缩放数字信号。 延迟元件接收并延迟数字信号延时。 加法器与增益元件和延迟元件耦合，将来自增益元件的定标信号和来自延迟元件的延迟信号相加，以产生调整后的信号。
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公开(公告)号：US08213487B2
公开(公告)日：2012-07-03
申请号：US12843605
申请日：2010-07-26
IPC分类号： H04B1/00
摘要： 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.
摘要翻译： 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他过程的同步的定时操作。
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公开(公告)号：US20110050496A1
公开(公告)日：2011-03-03
申请号：US12574625
申请日：2009-10-06
申请人： Jie Wu , Emilija Simic
发明人： Jie Wu , Emilija Simic
IPC分类号： G01S19/37
CPC分类号： G01S19/30 , H04B1/7085 , H04B1/7087 , H04B2201/70715
摘要： Methods and apparatus are provided for use in devices enabled to perform waveform correlation processing of satellite positioning system (SPS) signals, including peak reconstruction.
摘要翻译： 提供的方法和装置用于能够执行卫星定位系统（SPS）信号的波形相关处理的装置，包括峰值重建。
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公开(公告)号：US07764726B2
公开(公告)日：2010-07-27
申请号：US11291173
申请日：2005-11-30
IPC分类号： H04B1/00
摘要： 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.
摘要翻译： 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他过程的同步的定时操作。
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公开(公告)号：US20100316095A1
公开(公告)日：2010-12-16
申请号：US12843605
申请日：2010-07-26
IPC分类号： H04B1/00
摘要： 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.
摘要翻译： 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他过程的同步的定时操作。
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公开(公告)号：US20070066268A1
公开(公告)日：2007-03-22
申请号：US11430613
申请日：2006-05-08
IPC分类号： H04B1/26
CPC分类号： G01S19/235 , H04B1/26
摘要： 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.
摘要翻译： 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，所接收的实例是来自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。
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公开(公告)号：US07016688B2
公开(公告)日：2006-03-21
申请号：US10435237
申请日：2003-05-09
IPC分类号： H04Q7/20
CPC分类号： H04W64/00 , G01S5/0226 , G01S5/0273 , G01S5/10 , G01S19/09 , G01S19/11 , G01S19/46 , H04B7/155 , H04B7/2606
摘要： 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.
摘要翻译： 一种前向链路中继器延迟水印（FLRDWM）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。
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公开(公告)号：US06961367B2
公开(公告)日：2005-11-01
申请号：US10392442
申请日：2003-03-17
申请人： Emilija Simic , Christopher Patrick
发明人： Emilija Simic , Christopher Patrick
CPC分类号： H04B7/2606 , G01S5/0226 , G01S5/0273 , G01S19/256 , G01S19/258 , G01S19/46 , H04B7/155
摘要： 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.
摘要翻译： 一种前向链路中继器频率水印（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）快速频率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/或识别快速频率水印，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。 这里描述的前向链路快速水印系统对FL，AFLT和GPS性能，良好的检测，识别和假警报概率，短时间检测/识别以及良好的检测/识别灵敏度的影响最小。
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公开(公告)号：US08139685B2
公开(公告)日：2012-03-20
申请号：US11430613
申请日：2006-05-08
IPC分类号： H04L27/00
CPC分类号： G01S19/235 , H04B1/26
摘要： 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.
摘要翻译： 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。
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