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1. 发明申请

US20080137765A1 CANDIDATE GENERATION 有权
标题翻译：候选人生成
公开(公告)号：US20080137765A1
公开(公告)日：2008-06-12
申请号：US11926625
申请日：2007-10-29
申请人： Rafi DALLA TORRE , Doron BURSHTEIN , Oren PELES , Deric W. WATERS
发明人： Rafi DALLA TORRE , Doron BURSHTEIN , Oren PELES , Deric W. WATERS
IPC分类号： H04L5/12 , H04L27/28
CPC分类号： H04L25/03006 , H04L25/061 , H04L2025/0342 , H04L2025/03426
摘要： A method and system for generating a set of candidate symbols. A system includes a Multiple Input Multiple Output (“MIMO”) receiver. The receiver includes a candidate generation look-up table (“LUT”) that provides a list of candidate values for a transmitted symbol selected from a constellation of symbols. The candidate generation LUT stores candidate lists for a portion of the constellation of symbols. The portion of the constellation for which candidate lists are stored is selected according to a symmetry of the constellation. The LUT preferably provides a secondary constellation superimposed on a decision region of a primary constellation. The LUT also preferably includes an inner point of the primary constellation and outer points of the primary constellation. The primary and secondary constellations are preferably compressed by application of quadrant, mirror, and inner-point symmetries.
摘要翻译：一种用于生成一组候选符号的方法和系统。系统包括多输入多输出（“MIMO”）接收机。接收机包括候选生成查询表（“LUT”），其提供从符号星座中选择的发送符号的候选值的列表。候选产生LUT存储符号星座的一部分的候选列表。根据星座的对称性选择存储候选列表的星座部分。 LUT优选地提供叠加在主要星座的决定区域上的次星座。 LUT还优选地包括主星座的内点和主星座的外点。主要和次要星座优选通过应用象限，反射镜和内点对称来压缩。

2. 发明申请

US20080137763A1 CANDIDATE LIST GENERATION AND INTERFERENCE CANCELLATION FRAMEWORK FOR MIMO DETECTION 有权
标题翻译：候选列表生成和干扰消除框架用于MIMO检测
公开(公告)号：US20080137763A1
公开(公告)日：2008-06-12
申请号：US11930259
申请日：2007-10-31
申请人： Deric W. WATERS , Naftali SOMMER , Doron BURSHTEIN , Rafi DALLA TORRE , Oren PELES , Anuj BATRA , Srinath HOSUR , Daniel WAJCER
发明人： Deric W. WATERS , Naftali SOMMER , Doron BURSHTEIN , Rafi DALLA TORRE , Oren PELES , Anuj BATRA , Srinath HOSUR , Daniel WAJCER
IPC分类号： H04L27/28 , H04L27/00 , H04L27/06
CPC分类号： H04L25/03006 , H04L2025/03426
摘要： A method and system for performing Multiple-input Multiple-Output (“MIMO”) detection that reduces complexity by decomposing MIMO detection problem into two less complex problems, Candidate List generation and Interference Cancellation (“CLIC”). Embodiments of the CLIC framework parse an N element channel output into a first set containing S elements and a second set containing N-S elements. A first list of candidate vectors is generated from the first set of elements. A set of interference cancelled elements is generated by using the first list of candidate vectors to cancel interference from the second set of elements. A second list of candidate vectors is generated from the set of interference cancelled elements. A minimum cost is computed for each bit of the candidate vectors and from the costs a log-likelihood ratio is computed.
摘要翻译：一种用于执行多输入多输出（“MIMO”）检测的方法和系统，其通过将MIMO检测问题分解成两个较不复杂的问题，候选列表生成和干扰消除（“CLIC”）来降低复杂度。 CLIC框架的实施例将N元素信道输出解析为包含S个元素的第一集合和包含N-S个元素的第二集合。从第一组元素生成候选向量的第一列表。通过使用候选向量的第一列表来消除来自第二组元素的干扰来生成一组干扰消除元素。从干扰消除元素的集合生成候选向量的第二列表。针对候选向量的每一位计算最小成本，并从成本计算对数似然比。

3. 发明申请

US20080144746A1 PARAMETERIZED SPHERE DETECTOR AND METHODS OF USING THE SAME 有权
标题翻译：参数球形探测器及其使用方法
公开(公告)号：US20080144746A1
公开(公告)日：2008-06-19
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： H04L27/06 , H03D1/00
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。

4. 发明申请

US20120172054A1 SYSTEM AND METHOD FOR COOPERATIVE POSITIONING 审中-公开
标题翻译：合作定位系统与方法
公开(公告)号：US20120172054A1
公开(公告)日：2012-07-05
申请号：US13327052
申请日：2011-12-15
申请人： Deric W. WATERS , Tarkesh PANDE , Jaiganesh BALAKRISHNAN
发明人： Deric W. WATERS , Tarkesh PANDE , Jaiganesh BALAKRISHNAN
IPC分类号： H04W24/00
CPC分类号： G01S19/46 , H04W64/00
摘要： Apparatus and method for cooperatively positioning a mobile wireless device. In one embodiment a mobile wireless device includes a navigation satellite receiver, a WLAN transceiver, and a cooperative positioning system. The navigation satellite receiver is configured to receive positioning signals from positioning satellites. The cooperative positioning system is configured to receive positioning measurements from a cooperating mobile wireless device via the WLAN transceiver. The received positioning measurements are derived from satellite positioning signals received by the cooperating mobile wireless device. The cooperative positioning system is also configured to determine a position of the mobile wireless device based on the positioning measurements received from the cooperating mobile wireless device, positioning measurements provided by the navigation satellite receiver, and a focal measurement that is a function of at least one of the position and the clock bias of both the mobile wireless device and the cooperating mobile wireless device.
摘要翻译：用于协调地定位移动无线设备的装置和方法。在一个实施例中，移动无线设备包括导航卫星接收机，WLAN收发器和协作定位系统。导航卫星接收机被配置为从定位卫星接收定位信号。协作定位系统被配置为经由WLAN收发器从协作的移动无线设备接收定位测量。所接收的定位测量值来源于由协作的移动无线设备接收的卫星定位信号。协作定位系统还被配置为基于从协作的移动无线设备接收的定位测量结果确定移动无线设备的位置，由导航卫星接收机提供的定位测量以及作为至少一个移动无线设备和协作移动无线设备的位置和时钟偏差。

5. 发明申请

US20120058778A1 SYSTEM AND METHOD FOR DETERMINING A POSITION OF A MOBILE WIRELESS DEVICE 有权
标题翻译：用于确定移动无线设备的位置的系统和方法
公开(公告)号：US20120058778A1
公开(公告)日：2012-03-08
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。

6. 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。

7. 发明申请

US20090031185A1 HYBRID ARQ SYSTEMS AND METHODS FOR PACKET-BASED NETWORKS 审中-公开
标题翻译：混合ARQ系统和基于分组网络的方法
公开(公告)号：US20090031185A1
公开(公告)日：2009-01-29
申请号：US12147823
申请日：2008-06-27
申请人： Ariton E. XHAFA , Deric W. WATERS , Anuj BATRA
发明人： Ariton E. XHAFA , Deric W. WATERS , Anuj BATRA
IPC分类号： H04L1/18 , G06F11/07
CPC分类号： H04L1/1819 , H04L1/0013 , H04L1/0068 , H04L1/0071
摘要： Systems and methods for hybrid automatic repeat-request (HARQ) communication, comprising a transmitter employing hybrid automatic repeat-request (HARQ) and able to retransmit an incorrectly received packet without differently re-encoding data bits. The transmitter is further able to select at least one bit from any in a set to forward in at least one retransmission. The set contains any bits punctured from an original transmission corresponding to the retransmission. Other embodiments transmit, by a transmitter using hybrid automatic repeat-request (HARQ), a packet containing at least one punctured bit, select—without differently re-encoding data bits—at least one bit from any in a set to forward in at least one re-transmission of an incorrectly received packet, and retransmit the packet with at least one different punctured bit. The set contains any bits punctured from an original transmission corresponding to the re-transmission.
摘要翻译：用于混合自动重传请求（HARQ）通信的系统和方法，包括采用混合自动重传请求（HARQ）的发射机，并且能够重传不正确接收的分组而不会对数据比特进行不同的重新编码。发射机还能够在至少一个重传中从集合中的任何一个中选择至少一个比特来转发。该集合包含从对应于重传的原始传输中删除的任何位。其他实施例由发射机使用混合自动重复请求（HARQ）发送包含至少一个穿孔位的分组，选择 - 不再对数据比特进行不同的重新编码 - 至少一个比特中的任何一个比特至少一个比特到重新发送错误接收的分组，并且用至少一个不同的穿孔比特重传分组。该集合包含从对应于重传的原始传输中删除的任何位。

8. 发明申请

US20080267306A1 Systems and Methods for Low-Complexity Maximum-Likelihood MIMO Detection 审中-公开
标题翻译：低复杂度最大似然MIMO检测系统与方法
公开(公告)号：US20080267306A1
公开(公告)日：2008-10-30
申请号：US12101767
申请日：2008-04-11
申请人： Anuj BATRA , Deric W. WATERS
发明人： Anuj BATRA , Deric W. WATERS
IPC分类号： H04L27/06
CPC分类号： H04L25/03171 , H04L25/0204 , H04L27/2647
摘要： Embodiments provide novel systems and methods for low-complexity maximum-likelihood detection, for use in various communication systems, e.g., multiple-input multiple-output (MIMO) systems, etc. These systems and methods enable computation of a detector that is more accurate than the max-log approximation. Embodiments comprise systems and methods for computing, using a maximum-likelihood detector, a set of log-likelihood ratio (LLR) values for a cost function of a channel input by implementing at least one accumulate LLR functional definition.
摘要翻译：实施例提供用于低复杂度最大似然检测的新型系统和方法，用于各种通信系统，例如多输入多输出（MIMO）系统等。这些系统和方法使得能够计算更准确的检测器比最大对数近似值。实施例包括用于通过实施至少一个累积LLR功能定义来计算使用最大似然检测器对于通道输入的成本函数的对数似然比（LLR）值的集合的系统和方法。

9. 发明申请

US20120063340A1 SYSTEM AND METHOD FOR ACCESS POINT BASED POSITIONING 有权
标题翻译：用于基于点的定位的系统和方法
公开(公告)号：US20120063340A1
公开(公告)日：2012-03-15
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： H04W24/00 , H04W84/12 , H04W88/08
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。

10. 发明申请

US20080198943A1 SYSTEMS AND METHODS FOR LATTICE ENUMERATION-AIDED DETECTION 有权
标题翻译：系统和方法用于激光识别辅助检测
公开(公告)号：US20080198943A1
公开(公告)日：2008-08-21
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： H04B7/02
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。

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