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。

公开(公告)号：US20100079334A1

公开(公告)日：2010-04-01

申请号：US12568084

申请日：2009-09-28

申请人： June Chul Roh ,  Eric W. Waters ,  Srinath Hosur ,  Goutam Dutta

发明人： June Chul Roh ,  Eric W. Waters ,  Srinath Hosur ,  Goutam Dutta

IPC分类号： G01S19/47 ,  G01P15/14

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。

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。

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。

公开(公告)号：US08601349B2

公开(公告)日：2013-12-03

申请号：US13220310

申请日：2011-08-29

申请人： June Chul Roh ,  Anuj Batra ,  Srinath Hosur

发明人： June Chul Roh ,  Anuj Batra ,  Srinath Hosur

IPC分类号： H03M13/00

CPC分类号： H04L69/22 ,  H03M13/152 ,  H03M13/155 ,  H04L1/0057 ,  H04L1/0079 ,  H04L1/1812 ,  H04L43/0823

摘要： Apparatus and method for processing a physical layer protocol convergence (PLCP) header. In one embodiment, a wireless device includes a PLCP header processor. The PLCP header processor is configured to: process a physical layer header, process a check value based on the physical layer header, and process an error correction code based on the physical layer header and the check value. A concatenation of the physical layer header, check value, and error correction code the PLCP header processor is configured to process consists of a number of information bits that is an integer multiple of a number of information bits per symbol used to encode the PLCP header.

公开(公告)号：US08391228B2

公开(公告)日：2013-03-05

申请号：US12760513

申请日：2010-04-14

申请人： Anuj Batra ,  Timothy M. Schmidl ,  Srinath Hosur ,  June Chul Roh

发明人： Anuj Batra ,  Timothy M. Schmidl ,  Srinath Hosur ,  June Chul Roh

IPC分类号： H04W4/00 ,  H04W72/04

CPC分类号： H04W4/80 ,  H04L27/18 ,  H04L27/20 ,  H04L27/2675 ,  H04L69/22 ,  H04W52/36 ,  H04W52/367 ,  H04W72/0453 ,  H04W74/0816

摘要： In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath environment based on a constant symbol rate for BAN packet transmissions and based on M-ary PSK, differential M-ary PSK or rotated differential M-ary PSK modulation. The PHY layer is configured to construct a physical-layer service data unit (PSDU) based on a concatenate block, an insert shortened bits block, a Bose, Ray-Chaudhuri, Hocquenghem (BCH) encoder, a remove shortened bits block, an add pad bits block, a spreader, a bit interleaver, a scrambler, and a symbol mapper.

摘要翻译： 在至少一些实施例中，通信设备包括具有物理（PHY）层的收发器。 基于用于BAN分组传输的恒定符号速率并且基于M-ary PSK，差分M-ary PSK或旋转差分M-ary PSK调制，PHY层被配置用于在有限多径环境中的体区域网络（BAN）操作。 PHY层被配置为基于级联块，插入缩短的比特块，Bose，Ray-Chaudhuri，Hocquenghem（BCH）编码器，移除缩短的比特块，加法来构造物理层服务数据单元（PSDU） 填充比特块，扩展器，比特交织器，加扰器和符号映射器。

公开(公告)号：US08699554B2

公开(公告)日：2014-04-15

申请号：US11928050

申请日：2007-10-30

申请人： Deric W. Waters ,  Anuj Batra ,  Srinath Hosur

发明人： Deric W. Waters ,  Anuj Batra ,  Srinath Hosur

IPC分类号： H03H7/30 ,  H03K5/159

CPC分类号： H04L25/03006 ,  H04L2025/03426 ,  H04L2025/03605

摘要： In at least some embodiments, a receiver for a wireless communication system is provided. The receiver includes an equalizer that provides an equalized channel matrix. The receiver also includes scaling logic coupled to the equalizer, the scaling logic selectively scales coefficients of the equalized channel matrix. The receiver also includes a decoder coupled to the scaling logic. The decoder decodes a signal based on the equalized channel matrix with scaled coefficients.

摘要翻译： 在至少一些实施例中，提供了一种用于无线通信系统的接收机。 接收机包括提供均衡信道矩阵的均衡器。 接收机还包括耦合到均衡器的缩放逻辑，缩放逻辑选择性地缩放均衡信道矩阵的系数。 接收机还包括耦合到缩放逻辑的解码器。 解码器基于具有缩放系数的均衡信道矩阵来解码信号。

公开(公告)号：US08392781B2

公开(公告)日：2013-03-05

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： G08C25/02 ,  H03M13/00

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。

公开(公告)号：US08306139B2

公开(公告)日：2012-11-06

申请号：US12016921

申请日：2008-01-18

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： Systems and methods for providing multiple-input multiple-output (MIMO) detection, comprising a leaf node predictor for receiving a processed communications stream, computing at least one channel metric corresponding to the communications stream for a given channel realization, and generating at least one parameter corresponding to at least one predicted best leaf node candidate for the given channel realization. A MIMO engine receives the at least one parameter and enumerates at least one list of candidate vectors corresponding to the leaf nodes specified by the generated at least one parameter. Some embodiments simulate a MIMO detector over many channel realizations, track channel metric and parameter values used for each channel realization resulting from such simulating, and store, in a look-up table, best values of the tracked values used for a particular channel metric.

摘要翻译： 用于提供多输入多输出（MIMO）检测的系统和方法，包括用于接收经处理的通信流的叶节点预测器，为给定的信道实现计算对应于通信流的至少一个信道度量，以及生成至少一个 参数对应于给定信道实现的至少一个预测的最佳叶节点候选。 MIMO引擎接收所述至少一个参数，并且列举与由所生成的至少一个参数指定的叶节点相对应的候选向量的至少一个列表。 一些实施例通过许多信道实现来模拟MIMO检测器，跟踪信道度量和用于每个信道实现的参数值，由这样的模拟和存储在查找表中，用于特定信道度量的跟踪值的最佳值。

公开(公告)号：US07961826B2

公开(公告)日：2011-06-14

申请号：US11928863

申请日：2007-10-30

申请人： Deric W. Waters ,  Oren Peles ,  Anuj Batra ,  Srinath Hosur ,  Doron Burshtein

发明人： Deric W. Waters ,  Oren Peles ,  Anuj Batra ,  Srinath Hosur ,  Doron Burshtein

IPC分类号： H04B7/10 ,  H04L1/02

CPC分类号： H04L25/03242 ,  H04L2025/03414 ,  H04L2025/03426

摘要： A Multiple-input Multiple-Output (MIMO) receiver is provided. The MIMO receiver comprises a parameterized sphere detector having two search modes. During a first search mode, the parameterized sphere detector enumerates a number of best candidate vectors up to a fixed parameter value. During a second search mode, the parameterized sphere detector enumerates additional candidate vectors using a greedy search until a predetermined number of candidate vectors have been enumerated.

摘要翻译： 提供多输入多输出（MIMO）接收机。 MIMO接收机包括具有两个搜索模式的参数化球体检测器。 在第一搜索模式期间，参数化球体检测器枚举多达一个固定参数值的最佳候选向量。 在第二搜索模式期间，参数化球体检测器使用贪婪搜索枚举附加候选向量，直到已经列举了预定数量的候选向量。