专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 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。

2. 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。

3. 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。

4. 发明授权

US08154443B2 Method and system for GNSS coexistence 有权
标题翻译： GNSS共存的方法和系统
公开(公告)号：US08154443B2
公开(公告)日：2012-04-10
申请号：US12394404
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： G01S19/11 , G01S19/21
CPC分类号： G01S19/21
摘要： A system and method for operating a wireless transmitter and a global navigation satellite (“GNSS”) receiver coexistent in a mobile wireless device. A mobile wireless device includes a GNSS receiver and a wireless networking system. The wireless networking system includes a wireless transmitter. The wireless transmitter provides a first interference level signal to the GNSS receiver. The first interference level signal indicates a level of interference that the GNSS receiver can expect due to operation of the transmitter.
摘要翻译：一种用于操作在移动无线设备中共存的无线发射机和全球导航卫星（“GNSS”）接收机的系统和方法。移动无线设备包括GNSS接收机和无线联网系统。无线网络系统包括无线发射机。无线发射机向GNSS接收机提供第一干扰电平信号。第一干扰电平信号指示GNSS接收机可能由于发射机的操作而能够预期的干扰水平。

5. 发明申请

US20110316738A1 Adjusting a Bandwidth of GNSS Receivers 有权
标题翻译：调整GNSS接收机的带宽
公开(公告)号：US20110316738A1
公开(公告)日：2011-12-29
申请号：US13227141
申请日：2011-09-07
申请人： Deric W. Waters , June Chul Roh , Sandeep Rao
发明人： Deric W. Waters , June Chul Roh , Sandeep Rao
IPC分类号： G01S19/23
CPC分类号： G01S19/26 , G01S19/05 , G01S19/235 , G01S19/246 , G01S19/254
摘要： Embodiments of the invention provide a method of adjusting a bandwidth of receivers. A plurality of outputs from a correlator engine are combined. User dynamics are sensed. Bandwidth of one or more receivers are adjusted. By detecting when the user is stationary, the Doppler frequency estimation can be corrected or the SNR can be boosted more both of which lead to improved performance. The embodiments allow a receiver to process signals in when the signal level would otherwise be too low—for example indoors. The embodiments can improve performance when one or more satellites are temporarily blocked but one or more satellites are still being tracked.
摘要翻译：本发明的实施例提供了一种调整接收机带宽的方法。来自相关器引擎的多个输出被组合。感应用户动态。调整一个或多个接收器的带宽。通过检测用户何时静止，可以校正多普勒频率估计或更多地提高SNR，这两者都可以提高性能。这些实施例允许接收机在信号电平否则将太低时处理信号，例如室内。当一个或多个卫星被暂时阻塞但仍在跟踪一个或多个卫星时，这些实施例可以提高性能。

6. 发明授权

US08054914B2 Noise variance estimation 有权
标题翻译：噪声方差估计
公开(公告)号：US08054914B2
公开(公告)日：2011-11-08
申请号：US12022461
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： H03K9/00 , H04L27/00
CPC分类号： H04L27/2647 , H04L1/206
摘要： A method and system for estimating noise variance. A method for noise variance estimation comprises receiving a first multi-sample symbol and receiving a second multi-sample symbol. The first multi-sample symbol is subtracted from the second multi-sample symbol to produce a set of noise samples. The set of noise samples is used to produce a noise variance estimate. The noise variance estimate is applied in various tasks (e.g. channel estimation, log-likelihood ratio computation, and/or minimum mean squared error equalization) to process data provided to a user.
摘要翻译：一种用于估计噪声方差的方法和系统。一种用于噪声方差估计的方法包括接收第一多样本符号并接收第二多样本符号。从第二多样本符号中减去第一多样本符号以产生一组噪声样本。噪声样本集用于产生噪声方差估计。在各种任务（例如信道估计，对数似然比计算和/或最小均方误差均衡）中应用噪声方差估计以处理提供给用户的数据。

7. 发明申请

US20110202754A1 USAGE MODE DETERMINATION OF NAVIGATION SYSTEM 有权
标题翻译：导航系统的使用模式确定
公开(公告)号：US20110202754A1
公开(公告)日：2011-08-18
申请号：US13027796
申请日：2011-02-15
申请人： Deric W. WATERS , Tarkesh PANDE
发明人： Deric W. WATERS , Tarkesh PANDE
IPC分类号： G06F9/00
CPC分类号： B63J99/00 , B63J2099/008 , G01C21/20 , G01C21/3423
摘要： A navigation system determines its usage mode. In some embodiments, a method comprises determining a usage mode of a navigation system based on at least one of an acceleration indicator, a speed indicator, and a magnet sensor. The usage mode is at least one of a pedestrian mode, a vehicular mode, an aerial mode, a train mode, and a marine mode. The method further comprises configuring a navigation subsystem based on the usage mode.
摘要翻译：导航系统确定其使用模式。在一些实施例中，一种方法包括基于加速度指示器，速度指示器和磁体传感器中的至少一个来确定导航系统的使用模式。使用模式是行人模式，车辆模式，空中模式，列车模式和船用模式中的至少一种。该方法还包括基于使用模式配置导航子系统。

8. 发明申请

US20110129032A1 Systems and Methods for Dual-Carrier Modulation Encoding and Decoding 审中-公开
标题翻译：双载波调制编码和解码的系统和方法
公开(公告)号：US20110129032A1
公开(公告)日：2011-06-02
申请号：US13022746
申请日：2011-02-08
申请人： Anuj Batra , Deric W. Waters
发明人： Anuj Batra , Deric W. Waters
IPC分类号： H04L27/36
CPC分类号： H04L27/2602
摘要： Systems and methods for dual-carrier modulation (DCM) encoding and decoding for communication systems. Some embodiments comprise a DCM encoder for applying a pre-transmission function to at least one 16-QAM input symbol and mapping resulting transformed symbols onto at least one larger constellation prior to transmission. Some embodiments joint decode, by a DCM decoder, a predetermined number of received data elements and compute a set of log-likelihood ratio (LLR) values for at least eight bits from a resulting at least one transformed symbol.
摘要翻译：用于通信系统的双载波调制（DCM）编码和解码的系统和方法。一些实施例包括DCM编码器，用于将预传输功能应用于至少一个16-QAM输入符号，并且在传输之前将所得到的变换符号映射到至少一个较大星座上。一些实施例由DCM解码器联合解码预定数量的接收数据元素，并从所得到的至少一个变换符号计算至少八位的对数似然比（LLR）值集合。

9. 发明申请

US20100180173A1 Hybrid-ARQ (HARQ) with Scrambler and Diversity 有权
标题翻译：混合ARQ（HARQ）与扰码器和多样性
公开(公告)号：US20100180173A1
公开(公告)日：2010-07-15
申请号：US12686929
申请日：2010-01-13
申请人： Anuj Batra , Deric W. Waters , Srinath Hosur
发明人： Anuj Batra , Deric W. Waters , Srinath Hosur
IPC分类号： H04L1/18 , H03M13/05 , G06F11/10 , G06F11/14
CPC分类号： H04L1/1812 , H04L1/188 , H04L1/1893
摘要： Embodiments of the invention provide a system and method of hybrid automatic repeat-request (HARQ) processing. A viterbi decoder is coupled to and follows a descrambler. After the signal has been de-scrambled, it can be stored in a memory in case it needs to be recombined with another packet. This means that the log-likelihood ratios LLRs for each transmitted bit are stored in memory using a finite number of bits (for example, between 4 and 12 bits). If the packet that is currently being processed contains retransmitted information, then the de-scrambled output stored from a previous packet containing the same information can be loaded and combined with the current packet.
摘要翻译：本发明的实施例提供了一种混合自动重传请求（HARQ）处理的系统和方法。维特比解码器耦合到并跟随解扰器。在信号被解除加扰之后，如果需要与另一个数据包重新组合，则可将其存储在存储器中。这意味着每个发送的比特的对数似然比LLRs使用有限数量的比特（例如，在4比特和12比特之间）存储在存储器中。如果当前处理的分组包含重发信息，则可以将包含相同信息的先前分组存储的去加扰输出加载并与当前分组组合。

10. 发明申请

US20090224975A1 METHOD AND SYSTEM FOR GNSS COEXISTENCE 有权
标题翻译： GNSS共存的方法和系统
公开(公告)号：US20090224975A1
公开(公告)日：2009-09-10
申请号：US12394404
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： G01S1/00
CPC分类号： G01S19/21
摘要： A system and method for operating a wireless transmitter and a global navigation satellite (“GNSS”) receiver coexistent in a mobile wireless device. A mobile wireless device includes a GNSS receiver and a wireless networking system. The wireless networking system includes a wireless transmitter. The wireless transmitter provides a first interference level signal to the GNSS receiver. The first interference level signal indicates a level of interference that the GNSS receiver can expect due to operation of the transmitter.
摘要翻译：一种用于操作在移动无线设备中共存的无线发射机和全球导航卫星（“GNSS”）接收机的系统和方法。移动无线设备包括GNSS接收机和无线联网系统。无线网络系统包括无线发射机。无线发射机向GNSS接收机提供第一干扰电平信号。第一干扰电平信号指示GNSS接收机由于发射机的操作而能够预期的干扰水平。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式