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1. 发明授权

US08548495B2 System and method for determining a position of a mobile wireless device by accessing access points alamanacs database 有权
标题翻译：用于通过访问接入点alamanacs数据库来确定移动无线设备的位置的系统和方法
公开(公告)号：US08548495B2
公开(公告)日：2013-10-01
申请号：US13227844
申请日：2011-09-08
申请人： Deric W. Waters , Sthanunathan Ramakrishnan
发明人： Deric W. Waters , Sthanunathan Ramakrishnan
IPC分类号： H04W24/00
CPC分类号： H04W64/003 , G01S5/0027 , G01S5/0036 , G01S5/0252
摘要： A system and method for determining a position of a mobile wireless device using wireless local area network access points (APs). In one embodiment, a mobile wireless device includes an AP positioning system configured to estimate a position of the device based on locations of APs disposed about the device. The AP positioning system is configured to: 1) access an AP database; and 2) provide, to the database, one or more medium access controller (MAC) addresses and an area of interest value. The AP positioning system is also configured to retrieve, from the database: 1) location information for each AP having a provided MAC address, or located within the area of interest; and 2) at least one of: signal parameters for the APs nearby the device, a geographic area within which each MAC address can be received, and an indication of a scan type to used for identifying APs.
摘要翻译：一种用于使用无线局域网接入点（AP）确定移动无线设备的位置的系统和方法。在一个实施例中，移动无线设备包括被配置为基于设置在设备周围的AP的位置来估计设备的位置的AP定位系统。 AP定位系统配置为：1）访问AP数据库; 和2）向数据库提供一个或多个媒体访问控制器（MAC）地址和感兴趣的区域的价值。 AP定位系统还被配置为从数据库检索：1）具有提供的MAC地址或位于感兴趣区域内的每个AP的位置信息; 以及2）以下中的至少一个：设备附近的AP的信号参数，可以接收每个MAC地址的地理区域以及用于识别AP的扫描类型的指示。

2. 发明授权

US08924155B2 System and method for access point based positioning 有权
标题翻译：基于接入点定位的系统和方法
公开(公告)号：US08924155B2
公开(公告)日：2014-12-30
申请号：US13230512
申请日：2011-09-12
申请人： Deric W. Waters , Sthanunathan Ramakrishnan , Ariton E. Xhafa , Jaiganesh Balakrishnan , Tarkesh Pande , Sandeep Kasargod , Saket Thukral
发明人： Deric W. Waters , Sthanunathan Ramakrishnan , Ariton E. Xhafa , Jaiganesh Balakrishnan , Tarkesh Pande , Sandeep Kasargod , Saket Thukral
IPC分类号： G01C21/00 , G01S5/02 , H04W64/00
CPC分类号： G01S5/0242 , H04W64/00
摘要： Apparatus and methods for scanning for access points (APs) for wireless local area network (WLAN) positioning. In one embodiment a wireless device includes a WLAN positioning system. The WLAN positioning system includes an AP scanner. The AP scanner is configured to determine which WLAN channels are being used by APs proximate to the wireless device. The AP scanner is also configured to scan for AP transmissions only the WLAN channels determined to be used by APs proximate to the wireless device. The AP scanner is further configured to extract signal strength and AP identification information for WLAN positioning from the AP transmissions on the scanned channels.
摘要翻译：用于扫描用于无线局域网（WLAN）定位的接入点（AP）的装置和方法。在一个实施例中，无线设备包括WLAN定位系统。 WLAN定位系统包括AP扫描器。 AP扫描器被配置为确定靠近无线设备的AP正在使用哪些WLAN信道。 AP扫描器还被配置为仅扫描AP传输，确定由接近无线设备的AP使用的WLAN信道。 AP扫描器还被配置为从扫描的信道上的AP传输中提取用于WLAN定位的信号强度和AP识别信息。

3. 发明授权

US08243843B2 Systems and methods for low-complexity MIMO detection using leaf-node prediction via look-up tables 有权
标题翻译：用于通过查找表使用叶节点预测的低复杂度MIMO检测的系统和方法
公开(公告)号：US08243843B2
公开(公告)日：2012-08-14
申请号：US13079944
申请日：2011-04-05
申请人： David L. Milliner , Deric W. Waters , Anuj Batra , Srinath Hosur
发明人： David L. Milliner , Deric W. Waters , Anuj Batra , Srinath Hosur
IPC分类号： H04B7/02
CPC分类号： H04L27/2601 , H04L25/0202
摘要： A method for building a look-up table for a receiver in a multiple-input multiple-output (MIMO) detection system simulates a MIMO detector over many channel realizations, tracks channel metric and parameter values used for each channel realization resulting from such simulating, and stores, in a look-up table, best values of the tracked values used for a particular channel metric.
摘要翻译：用于构建多输入多输出（MIMO）检测系统中的接收机的查找表的方法通过许多信道实现来模拟MIMO检测器，跟踪由这样的模拟产生的每个信道实现所使用的信道度量和参数值，并且在查找表中存储用于特定信道度量的被跟踪值的最佳值。

4. 发明授权

US08131230B2 Method and system for FM transmitter coexistence 有权
标题翻译： FM发射机共存的方法和系统
公开(公告)号：US08131230B2
公开(公告)日：2012-03-06
申请号：US12394372
申请日：2009-02-27
申请人： Ariton E. Xhafa , Deric W. Waters
发明人： Ariton E. Xhafa , Deric W. Waters
IPC分类号： H03B1/04
CPC分类号： H04W16/14 , H04B1/034
摘要： A system and method for operating an FM system and wireless networking system coexistent in a mobile wireless device. A mobile wireless device includes a frequency modulation (“FM”) system that includes an FM transmitter and, optionally, an FM receiver. The mobile wireless device also includes a wireless networking system having a network receiver. The FM system is configured to disable the FM transmitter if an amplitude of a modulating signal provided to the FM transmitter is below a predetermined threshold.
摘要翻译：一种用于操作在移动无线设备中共存的FM系统和无线网络系统的系统和方法。移动无线设备包括包括FM发射机和可选地FM接收机的频率调制（“FM”）系统。移动无线设备还包括具有网络接收机的无线网络系统。 FM系统被配置为如果向FM发射机提供的调制信号的幅度低于预定阈值，则禁用FM发射机。

5. 发明授权

US08023577B2 Systems and methods for efficient channel classification 有权
标题翻译：高效渠道分类的系统和方法
公开(公告)号：US08023577B2
公开(公告)日：2011-09-20
申请号：US12024029
申请日：2008-01-31
申请人： Tarkesh Pande , Deric W. Waters , Srinath Hosur , Anuj Batra
发明人： Tarkesh Pande , Deric W. Waters , Srinath Hosur , Anuj Batra
IPC分类号： H04B17/00 , H04B3/46 , H04Q1/20
CPC分类号： H04L25/0204 , H04B7/0417 , H04B7/066 , H04L2025/03426
摘要： Embodiments provide a system and method for efficiently classifying different channel types in an orthogonal frequency division multiplexing (OFDM) system. Embodiments quantify the frequency selectivity in a channel by measuring the variation in a particular channel statistic across sub-carriers in an OFDM system, involve minimal complexity in implementation, and can be used in a variety of scenarios. One embodiment is a method for classifying channels in an OFDM system, comprising measuring variation of at least one channel statistic across sub-carriers, quantifying the variation to determine a measurement value, and applying the measurement value to at least one threshold to classify the channel.
摘要翻译：实施例提供了一种用于在正交频分复用（OFDM）系统中有效地分类不同信道类型的系统和方法。实施例通过测量OFDM系统中跨子载波的特定信道统计量的变化来量化信道中的频率选择性，涉及实现中的最小复杂度，并且可以用于各种情况。一个实施例是一种用于对OFDM系统中的信道进行分类的方法，包括测量跨越子载波的至少一个信道统计量的变化，量化变化以确定测量值，以及将测量值应用于至少一个阈值以对信道进行分类。

6. 发明授权

US07945008B2 Systems and methods for lattice enumeration-aided detection 有权
标题翻译：网格计数辅助检测系统和方法
公开(公告)号：US07945008B2
公开(公告)日：2011-05-17
申请号：US12032309
申请日：2008-02-15
申请人： David L. Milliner , Anuj Batra , Srinath Hosur , Deric W. Waters
发明人： David L. Milliner , Anuj Batra , Srinath Hosur , Deric W. Waters
IPC分类号： H04L7/00
CPC分类号： H04L25/03242 , H04L27/2647 , H04L2025/03426
摘要： Embodiments provide systems and methods for improved multiple-input, multiple-output (MIMO) detection comprising generating at least one list of candidate vectors by employing lattice enumeration which approximates hyperellipsoid detection search space and calculating a reliability of the candidate vectors. At least one advantage to embodiments is that improved detection occurs because detection can be performed in a search space defined by the eigenvectors (which define the general shape of an ellipsoid/hyperellipsoid, depending upon number of dimensions) and eigenvalues (which provide the appropriate scaling in each direction of the eigenvectors) of the effective channel.
摘要翻译：实施例提供了用于改进多输入多输出（MIMO）检测的系统和方法，包括通过采用接近超声检测搜索空间并计算候选向量的可靠性的点阵列表来生成候选向量的至少一个列表。对于实施例的至少一个优点是发生改进的检测，因为检测可以在由特征向量定义的搜索空间中执行（其定义为椭圆体的一般形状/取决于维数）和特征值（其提供适当的缩放在特征向量的每个方向上）有效信道。

7. 发明申请

US20080181322A1 SYSTEMS AND METHODS FOR HYBRID-MIMO EQUALIZATION 有权
标题翻译：用于混合MIMO均衡的系统和方法
公开(公告)号：US20080181322A1
公开(公告)日：2008-07-31
申请号：US12022307
申请日：2008-01-30
申请人： Deric W. Waters , Anuj Batra , Srinath Hosur
发明人： Deric W. Waters , Anuj Batra , Srinath Hosur
IPC分类号： H04L27/28 , G06F17/16
CPC分类号： H04L25/03006 , H04L2025/03414 , H04L2025/03426 , H04L2025/03605
摘要： Embodiments provide systems and methods for a novel multiple-input multiple-output (MIMO) equalization technique that produces a channel matrix that contains partly real coefficients and partly complex coefficients, referred to herein as a hybrid-MIMO equalization. MIMO detectors can exploit the hybrid-MIMO equalization to reduce complexity. Some embodiments provide systems and methods for equalizing a communication channel comprising receiving as an input a channel output vector, dividing the input into two vectors, a first vector that remains a complex number and a second vector that contains only real numbers, separating the second vector into its real and imaginary components, and regrouping the first and second vectors into a hybrid channel output vector that contains both real and complex coefficients.
摘要翻译：实施例提供了一种新颖的多输入多输出（MIMO）均衡技术的系统和方法，其产生包含部分实系数和部分复系数的信道矩阵，这里称为混合MIMO均衡。 MIMO检测器可以利用混合MIMO均衡来降低复杂度。一些实施例提供用于均衡通信信道的系统和方法，包括：接收作为输入的信道输出向量，将输入划分成两个向量，保留复数的第一向量和仅包含实数的第二向量，将第二向量转换成其实部和虚部，并将第一和第二矢量重新分组成包含实数和复系数的混合信道输出向量。

8. 发明授权

US09103916B2 Apparatus and method for indoor positioning 有权
标题翻译：室内定位装置及方法
公开(公告)号：US09103916B2
公开(公告)日：2015-08-11
申请号：US13462386
申请日：2012-05-02
申请人： Deric W. Waters , Jayawardan Janardhanan
发明人： Deric W. Waters , Jayawardan Janardhanan
IPC分类号： G01S19/48
CPC分类号： G01S19/48 , G01S5/0252 , G01S5/0263 , G01S5/14 , G01S19/03 , G01S19/46
摘要： Apparatus and method for positioning a wireless device. In one embodiment, a method for indoor positioning includes determining a reference location of a wireless device, based on satellite positioning, as the device passes between areas of satellite positioning signal reception and satellite positioning signal non-reception. While in the areas of non-reception, signals transmitted by wireless local area network (WLAN) access points (APs) and parameters of motion of the device are measured. Positions of the device are estimated while in the areas of non-reception based on the reference location and the parameters of motion. A positioning grid for positioning is generated based on the signals measured by the wireless device at the estimated positions.
摘要翻译：用于定位无线设备的装置和方法。在一个实施例中，一种用于室内定位的方法包括当卫星定位信号接收和卫星定位信号不接收的区域之间经过卫星定位时，确定无线设备的参考位置。在不接收的区域中，测量由无线局域网（WLAN）接入点（AP）发送的信号和设备的运动参数。在基于参考位置和运动参数的不接收的区域中估计设备的位置。基于由无线设备在估计位置测量的信号产生用于定位的定位网格。

9. 发明授权

US09030356B2 Positioning system receiver sensor system coupled with measurement data output 有权
标题翻译：定位系统接收机传感器系统与测量数据输出相结合
公开(公告)号：US09030356B2
公开(公告)日：2015-05-12
申请号：US13163199
申请日：2011-06-17
申请人： Goutam Dutta , Tarkesh Pande , Sandeep Rao , Deric W. Waters
发明人： Goutam Dutta , Tarkesh Pande , Sandeep Rao , Deric W. Waters
IPC分类号： G01S19/47 , G01C21/16
CPC分类号： G01S19/47 , G01C21/165 , G01S19/20 , G01S19/49 , G01S19/52
摘要： Embodiments of the disclosure provide a cross coupled position engine architecture for sensor integration in a Global Navigation Satellite System. In one embodiment, a data processing engine for processing inertial sensor data within a positioning system receiver is disclosed. The data processing engine includes a first input for receiving the sensor data, and a second input for receiving a positioning data. The data processing system also includes a memory and a processor. The processor of the data processing system is coupled to the memory and to the first and second input. The processor of the data processing system is configured to calculate a net acceleration profile data from the inertial sensor data and from the positioning data. The net acceleration profile data calculated by the processor of the data processing system is used for the Global Positioning System (GPS) receiver to subsequently calculate a position and a velocity data.
摘要翻译：本公开的实施例提供了用于全球导航卫星系统中的传感器集成的交叉耦合位置引擎结构。在一个实施例中，公开了一种用于在定位系统接收器内处理惯性传感器数据的数据处理引擎。数据处理引擎包括用于接收传感器数据的第一输入端和用于接收定位数据的第二输入端。数据处理系统还包括存储器和处理器。数据处理系统的处理器耦合到存储器和第一和第二输入端。数据处理系统的处理器被配置为从惯性传感器数据和定位数据计算净加速度曲线数据。由数据处理系统的处理器计算的净加速度曲线数据用于全球定位系统（GPS）接收机，以随后计算位置和速度数据。

10. 发明授权

US08380433B2 Low-complexity tightly-coupled integration filter for sensor-assisted GNSS receiver 有权
标题翻译：用于传感器辅助GNSS接收机的低复杂度紧耦合集成滤波器
公开(公告)号：US08380433B2
公开(公告)日：2013-02-19
申请号：US12568084
申请日：2009-09-28
申请人： June Chul Roh , Deric W. Waters , Srinath Hosur , Goutam Dutta
发明人： June Chul Roh , Deric W. Waters , Srinath Hosur , Goutam Dutta
IPC分类号： G01C21/10 , H04B7/185
CPC分类号： G01S19/47 , G01C21/165 , G01C21/28 , G01C22/006 , G06F17/16
摘要： Embodiments of the invention provide a blending filter based on extended Kalman filter (EKF), which optimally integrates the IMU navigation data with all other satellite measurements tightly-coupled integration filter. This blending filter can be easily implemented with minor modification to the position engine of stand-alone GNSS receiver. Provided is a low-complexity tightly-coupled integration filter for sensor-assisted global navigation satellite system (GNSS) receiver. The inertial measurement unit (IMU) contains inertial sensors such as accelerometer, magnetometer, and/or gyroscopes Embodiments also include method for pedestrian dead reckoning (PDR) data conversion for ease of GNSS/PDR integration. The PDR position data is converted to user velocity measured at the time instances where GNSS position/velocity estimates are available.
摘要翻译：本发明的实施例提供了一种基于扩展卡尔曼滤波器（EKF）的混合滤波器，其将IMU导航数据与所有其他卫星测量紧密耦合的积分滤波器进行最佳集成。这种混合滤波器可以通过对独立GNSS接收机的位置引擎的微小修改来轻松实现。提供了用于传感器辅助的全球导航卫星系统（GNSS）接收机的低复杂度紧耦合集成滤波器。惯性测量单元（IMU）包含诸如加速度计，磁力计和/或陀螺仪的惯性传感器。实施例还包括用于容易进行GNSS / PDR集成的行人航位推算（PDR）数据转换的方法。 PDR位置数据被转换成在GNSS位置/速度估计可用的时间点测量的用户速度。

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