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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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2.发明申请METHODS AND APPARATUSES FOR DEMODULATING MULTIPLE CHANNEL SATELLITE POSITIONING SYSTEM SIGNALS 有权用于解调多通道卫星定位系统信号的方法和装置公开(公告)号：US20110216811A1
公开(公告)日：2011-09-08
申请号：US12716994
申请日：2010-03-03
申请人： Douglas Neal Rowitch
发明人： Douglas Neal Rowitch
IPC分类号： H04B1/707
摘要： Methods and apparatuses are provided which may be enabled within and/or for use with a Satellite Positioning System (SPS) receiver and/or other like apparatuses or device(s) to demodulate a first channel portion of a multiple channel SPS signal based, at least in part, on a second channel portion of the multiple channel SPS signal.
摘要翻译： 提供了可以在卫星定位系统（SPS）接收机和/或其他类似设备或设备中使用和/或与卫星定位系统（SPS）接收机和/或其他类似装置或设备一起使用以解调多信道SPS信号的第一信道部分的方法和装置， 至少部分地在多通道SPS信号的第二通道部分上。
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公开(公告)号：US20100304761A1
公开(公告)日：2010-12-02
申请号：US12473190
申请日：2009-05-27
CPC分类号： H04W52/0254 , H03G3/3078 , H04B1/7085 , H04B1/7117 , H04L25/03019 , H04L2025/03566 , H04W48/16 , Y02D70/122 , Y02D70/142 , Y02D70/144 , Y02D70/164 , Y02D70/40
摘要： Methods and apparatus are directed to mobile devices utilizing motion and/or position sensors for improving operating performance and/or power efficiency. In one example, a method for reducing power consumption in a mobile device includes receiving movement information, establishing movement data based on the movement information, determining if the mobile device is stationary using the movement data; and reducing the frequency of searching for a base station when the mobile device is stationary. In another example, a mobile device which reduces power consumption based upon movement data includes an RF front end, a receiver coupled to the RF front end, a data demodulator coupled to the receiver, a searcher, coupled to the RF front end and the receiver, which searches for base stations, and a processing unit coupled to the searcher, wherein the processing unit controls the searcher based upon the stationarity of the mobile device.
摘要翻译： 方法和装置涉及利用运动和/或位置传感器来改善操作性能和/或功率效率的移动设备。 在一个示例中，用于降低移动设备中的功耗的方法包括接收移动信息，基于移动信息建立移动数据，使用移动数据确定移动设备是否静止; 并且当移动设备静止时降低搜索基站的频率。 在另一示例中，基于移动数据降低功耗的移动设备包括RF前端，耦合到RF前端的接收器，耦合到接收器的数据解调器，耦合到RF前端和接收器的搜索器 ，其搜索基站，以及耦合到搜索器的处理单元，其中处理单元基于移动设备的平稳性来控制搜索者。
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4.发明申请公开(公告)号：US20100279705A1
公开(公告)日：2010-11-04
申请号：US12237842
申请日：2008-09-25
CPC分类号： G01S19/24 , G01S19/252 , H04W64/00
摘要： In a method and system for deriving a seed position of a subscriber station in a wireless communications system in supporting unassisted GPS-type position determination is provided, the subscriber station receives overhead messages from the wireless communications system, and derives the seed position from the parameter values. The subscriber station may use a data structure in its memory and map possible parameter values to corresponding positions that may serve as the seed positions.
摘要翻译： 在提供支持无辅助GPS型位置确定的无线通信系统中用于订阅用户站的种子位置的方法和系统中，用户站从无线通信系统接收开销消息，并从参数中导出种子位置 价值观。 订户站可以在其存储器中使用数据结构，并将可能的参数值映射到可用作种子位置的相应位置。
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公开(公告)号：US20100135365A1
公开(公告)日：2010-06-03
申请号：US12326001
申请日：2008-12-01
申请人： Shiou-Hung Chen , Grant Alexander Marshall , Emilija M. Simic , Douglas Neal Rowitch , Rayman Wai Pon
发明人： Shiou-Hung Chen , Grant Alexander Marshall , Emilija M. Simic , Douglas Neal Rowitch , Rayman Wai Pon
CPC分类号： H04B1/7113 , G01S19/22 , H04B2201/70715
摘要： An apparatus and method for short multipath mitigation. In one aspect the method comprises subtracting a first stronger path from a correlation function to obtain a first residual signal, wherein one component of the first residual signal is a weaker path; applying reconstruction on the first residual signal to obtain a first reconstructed weaker path; subtracting the first reconstructed weaker path from the correlation function to obtain a second residual signal; and applying reconstruction on the second residual signal to obtain a second stronger path. In one aspect, the apparatus includes an antenna for receiving a composite receive RF signal, a receiver front-end for converting the composite receive RF signal into a composite receive digital signal; and a processor for performing signal correlation on the composite receive digital signal to obtain a correlation function and for processing the correlation function to obtain a desired signal. In one aspect, the short multipath is identified by computing a Left Edge Height Ratio Indicator (LEHRI).
摘要翻译： 一种用于短多径减轻的装置和方法。 在一个方面，该方法包括从相关函数中减去第一较强路径以获得第一残差信号，其中第一残差信号的一个分量是较弱的路径; 对第一残差信号应用重建以获得第一重建较弱路径; 从所述相关函数中减去所述第一重建较弱路径以获得第二残差信号; 以及对所述第二残差信号应用重建以获得第二较强路径。 一方面，该装置包括用于接收复合接收RF信号的天线，用于将复合接收RF信号转换成复合接收数字信号的接收机前端; 以及处理器，用于对复合接收数字信号执行信号相关，以获得相关函数，并用于处理相关函数以获得期望的信号。 在一个方面，通过计算左边缘高度比指示符（LEHRI）来识别短多径。
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6.发明授权Method and apparatus for demodulating signals processed in a transmit diversity mode 有权用于解调以发射分集模式处理的信号的方法和装置公开(公告)号：US07684474B2
公开(公告)日：2010-03-23
申请号：US11624198
申请日：2007-01-17
CPC分类号： H04B1/70751 , H04B1/70752 , H04B1/708 , H04B1/709 , H04B7/0613 , H04J13/004
摘要： Demodulator architectures for processing a received signal in a wireless communications system. The demodulator includes a number of correlators coupled to a combiner. Each correlator typically receives and despreads input samples (which are generated from the received signal) with a respective despreading sequence to provide despread samples. Each correlator then decovers the despread samples to provide decovered “half-symbols” and further demodulates the decovered half-symbols with pilot estimates to generate correlated symbols. The decovering is performed with a Walsh symbol having a length (T) that is half the length (2T) of a Walsh symbol used to cover the data symbols in the transmitted signal. The combiner selectively combines correlated symbols from the assigned correlators to provide demodulated symbols. One or more correlators can be assigned to process one or more instances of each transmitted signal. The pilot estimates used within each assigned correlator to demodulate the decovered half-symbols are generated based on the signal instance being processed by that correlator.
摘要翻译： 用于在无线通信系统中处理接收信号的解调器架构。 解调器包括耦合到组合器的多个相关器。 每个相关器通常以相应的解扩序列接收和解扩输入采样（其从接收信号产生），以提供解扩样本。 每个相关器然后解码解扩样本以提供去除的“半符号”，并且用导频估计进一步解调已解除的半符号以产生相关符号。 使用具有用于覆盖发送信号中的数据符号的沃尔什符号的长度（2T）的一半的长度（T）的沃尔什符号执行解复用。 组合器选择性地组合来自所分配的相关器的相关符号以提供解调符号。 可以分配一个或多个相关器来处理每个发射信号的一个或多个实例。 在每个分配的相关器内使用的导频估计是根据该相关器正在处理的信号实例产生的。
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公开(公告)号：US20090274079A1
公开(公告)日：2009-11-05
申请号：US12431683
申请日：2009-04-28
申请人： Ashok Bhatia , Dominic Gerard Farmer , Douglas Neal Rowitch , Doulgas Grover , Arie Rahmat , Chang Shik Row
发明人： Ashok Bhatia , Dominic Gerard Farmer , Douglas Neal Rowitch , Doulgas Grover , Arie Rahmat , Chang Shik Row
IPC分类号： H04B7/00
CPC分类号： H04B1/403 , H04B1/3805
摘要： In a radio frequency (RF) receiver, a receiver RF chain is tuned to a first (e.g., global positioning system (GPS)) channel to permit receipt of a first (e.g., GPS) signal over the first (e.g., GPS) channel on the receiver RF chain during a first time duration. The receiver RF chain is tuned to a second (e.g., cellular page) channel to permit receipt of a second (e.g., cellular page) signal over the second (e.g., cellular page) channel on the receiver RF chain during a second time duration, following the first time duration. The first (e.g., GPS) signal is processed during the first time duration and the second time duration, without any apparent interruption of the first (e.g., GPS) signal during the second time duration. The processing, for example, treats the actual interruption as a temporary, short term fade of the first (e.g., GPS) signal during the second time duration, or provides a bridge signal (e.g., an estimated GPS signal on the receiver RF chain or an actual GPS signal received on another receiver RF chain) during the second time duration.
摘要翻译： 在射频（RF）接收机中，接收器RF链被调谐到第一（例如，全球定位系统（GPS））信道，以允许在第一（例如，GPS）信道上接收第一（例如，GPS）信号 在第一时间段内在接收机RF链上。 接收机RF链被调谐到第二（例如，蜂窝页）信道，以允许在第二持续时间期间在接收机RF链上的第二（例如，蜂窝页）信道上接收第二（例如，蜂窝页）信号， 按照第一次持续时间。 在第一持续时间和第二持续时间期间处理第一（例如，GPS）信号，而在第二持续时间期间没有第一（例如，GPS）信号的明显中断。 例如，该处理将实际中断视为在第二持续时间期间第一（例如，GPS）信号的临时短期衰落，或提供桥接信号（例如，接收机RF链上的估计的GPS信号或 在另一个接收机RF链上接收的实际GPS信号）。
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8.发明申请Method and Apparatus for Establishing a Wireless Network Signal Acquisition Rate 审中-公开建立无线网络信号采集率的方法和装置公开(公告)号：US20090156205A1
公开(公告)日：2009-06-18
申请号：US11958257
申请日：2007-12-17
申请人： Douglas Neal Rowitch
发明人： Douglas Neal Rowitch
IPC分类号： H04Q7/20
摘要： Methods and apparatuses are provided for use by, or use with or in, a portable wireless device that allow for a wireless network signal acquisition rate to based, at least in part, on movement data associated with the portable wireless device.
摘要翻译： 方法和装置被提供用于便携式无线设备的使用或使用或使用，其允许无线网络信号获取速率至少部分地基于与便携式无线设备相关联的移动数据。
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9.发明申请公开(公告)号：US20140062719A1
公开(公告)日：2014-03-06
申请号：US13598439
申请日：2012-08-29
申请人： Douglas Neal ROWITCH
发明人： Douglas Neal ROWITCH
IPC分类号： G08C15/06
CPC分类号： H04W4/023 , G01S5/02 , G01S5/0236 , H04B2203/5433 , H04Q9/00 , H04Q2209/60 , H04W24/08 , H04W84/18
摘要： Methods, systems, computer-readable media, and apparatuses for using a smart meter as a reliable crowd-sourcing agent are presented. In some embodiments, a smart meter installed at a location may observe one or more wireless signals at the location. Subsequently, the smart meter may provide, to at least one signal almanac server, information that identifies the location and describes one or more detected properties of the one or more observed wireless signals. In at least one arrangement, the information provided to the at least one signal almanac server may be configured to be used by the at least one signal almanac server in providing position assistance information to one or more mobile devices located in a vicinity of the location.
摘要翻译： 提出了使用智能电表作为可靠的人群来源的方法，系统，计算机可读介质和装置。 在一些实施例中，安装在位置处的智能电表可以在该位置观察一个或多个无线信号。 随后，智能电表可以向至少一个信号历书服务器提供标识位置并描述一个或多个观察到的无线信号的一个或多个检测到的属性的信息。 在至少一种布置中，提供给至少一个信号历书服务器的信息可以被配置为由至少一个信号历书服务器使用来向位于该位置附近的一个或多个移动设备提供位置辅助信息。
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公开(公告)号：US08437772B2
公开(公告)日：2013-05-07
申请号：US12560246
申请日：2009-09-15
IPC分类号： H04W74/00
CPC分类号： G01S5/021 , G01S5/0236 , G01S5/0242 , H04W24/02 , H04W64/003
摘要： The subject matter disclosed herein relates to determining whether a reported position of a wireless transmitter is sufficiently accurate in accordance with an accuracy metric based at least in part on a calculated range between an estimated position of a mobile station and the reported position and also based at least in part on one or more measurements taken from one or more signals transmitted by the wireless transmitter.
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