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公开(公告)号：US20060013327A1
公开(公告)日：2006-01-19
申请号：US11231161
申请日：2005-09-20
CPC分类号： H04L5/0007 , H01Q3/28 , H03G3/3042 , H03G3/3089 , H04B1/0483 , H04B7/0417 , H04B7/0615 , H04B7/0617 , H04B7/0669 , H04B7/0671 , H04B7/0845 , H04B7/0848 , H04B7/0854 , H04B7/0857 , H04L1/06 , H04L25/0204 , H04L25/0228 , H04L25/0242 , H04L25/03343 , H04L27/2602 , H04L27/2626 , H04L2025/03426 , H04L2025/03611 , H04W52/42
摘要： A transceiver using composite beamforming technique is provided wherein a first communication device has a plurality of antennas and the second communication has a plurality of antennas. When the first communication device transmits to the second communication device, the transmit signal is multiplied by a transmit weight vector for transmission by each the plurality of antennas and the transmit signals are received by the plurality of antennas at the second communication device. The optimum transmit weight vector and receive weight vector for communication between the first and second communication devices is determined so that there is effectively joint or composite beamforming between the communication devices.
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公开(公告)号：US08776221B2
公开(公告)日：2014-07-08
申请号：US13342293
申请日：2012-01-03
CPC分类号： H04L1/0046 , H04L1/0072 , H04L1/0091
摘要： Techniques are provided for receiving a transmitted first packet that was formatted using a known scrambling algorithm with an unknown scrambling seed. An encoded packet payload is extracted from the first packet header. The encoded packet payload header is decoded to obtain a first scrambled packet payload header. For each potential value of the unknown seed, the first scrambled packet payload header is descrambled to produce a first set of descrambled packet payload headers and for each potential value of initial register values associated with a cyclic redundancy check, the cyclic redundancy check is executed comprising polynomial division on each of the descrambled packet payload headers such that when the polynomial division results in a zero remainder, a potential unscrambled payload header for the first packet is obtained. Information about the first packet is obtained from the potential unscrambled payload header.
摘要翻译： 提供了用于接收使用具有未知加扰种子的已知加扰算法格式化的所发送的第一分组的技术。 从第一分组报头中提取编码分组有效载荷。 编码分组有效载荷头部被解码以获得第一加扰分组有效载荷头部。 对于未知种子的每个潜在值，第一加扰分组有效载荷报头被解扰以产生第一组解扰分组有效载荷报头，并且对于与循环冗余校验相关联的初始寄存器值的每个潜在值，执行循环冗余校验，包括 每个解扰分组有效载荷头部上的多项式除法使得当多项式除法导致零余数时，获得用于第一分组的潜在未加扰的有效负载报头。 关于第一分组的信息是从潜在的未加扰的有效负载报头获得的。
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23.发明申请Matching receive signal strenth data associated with radio emission sources for positioning applications 审中-公开匹配与定位应用的无线电发射源相关联的接收信号强度数据公开(公告)号：US20060128311A1
公开(公告)日：2006-06-15
申请号：US11010867
申请日：2004-12-13
申请人： Yohannes Tesfai
发明人： Yohannes Tesfai
IPC分类号： H04B17/00
CPC分类号： G01S5/0252
摘要： A system, method and software for determining a position of a source of a radio emission. Receive signal strength data associated with reception of radio emissions is generated at each of a plurality of radio sensor devices that are at corresponding known positions in an area where the radio emissions are occurring. Using characteristics associated with reception of the radio emissions at each of the sensor devices, the receive signal strength data generated by each of the sensors is matched as corresponding to a radio emission from the same source. The characteristics used to match receive signal strength data may include spectrum analysis data and/or timing analysis data. Once the receive signal strength data is matched, position computations may be performed on the appropriate set of receive signal strength data to compute the position of the source of the radio emission.
摘要翻译： 一种用于确定无线电发射源的位置的系统，方法和软件。 在发生无线电发射的区域中的相应已知位置处的多个无线电传感器装置中的每一个处产生与接收无线电发射相关联的接收信号强度数据。 使用与在每个传感器装置处的无线电发射的接收相关联的特性，将由每个传感器生成的接收信号强度数据与来自相同源的无线电发射相对应。 用于匹配接收信号强度数据的特征可以包括频谱分析数据和/或定时分析数据。 一旦接收信号强度数据匹配，可以对适当的接收信号强度数据集执行位置计算，以计算无线电发射源的位置。
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公开(公告)号：US20120291127A1
公开(公告)日：2012-11-15
申请号：US13342293
申请日：2012-01-03
CPC分类号： H04L1/0046 , H04L1/0072 , H04L1/0091
摘要： Techniques are provided for receiving a transmitted first packet that was formatted using a known scrambling algorithm with an unknown scrambling seed. An encoded packet payload is extracted from the first packet header. The encoded packet payload header is decoded to obtain a first scrambled packet payload header. For each potential value of the unknown seed, the first scrambled packet payload header is descrambled to produce a first set of descrambled packet payload headers and for each potential value of initial register values associated with a cyclic redundancy check, the cyclic redundancy check is executed comprising polynomial division on each of the descrambled packet payload headers such that when the polynomial division results in a zero remainder, a potential unscrambled payload header for the first packet is obtained. Information about the first packet is obtained from the potential unscrambled payload header.
摘要翻译： 提供了用于接收使用具有未知加扰种子的已知加扰算法格式化的所发送的第一分组的技术。 从第一分组报头中提取编码分组有效载荷。 编码分组有效载荷头部被解码以获得第一加扰分组有效载荷头部。 对于未知种子的每个潜在值，第一加扰分组有效载荷报头被解扰以产生第一组解扰分组有效载荷报头，并且对于与循环冗余校验相关联的初始寄存器值的每个潜在值，执行循环冗余校验，包括 每个解扰分组有效载荷头部上的多项式除法使得当多项式除法导致零余数时，获得用于第一分组的潜在未加扰的有效负载报头。 关于第一分组的信息是从潜在的未加扰的有效负载报头获得的。
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25.发明申请Self-calibrated path loss position estimation and zone of impact determination 有权自校准路径损耗位置估计和冲击测定区域公开(公告)号：US20050285793A1
公开(公告)日：2005-12-29
申请号：US11156463
申请日：2005-06-21
申请人： Gary Sugar , Yohannes Tesfai
发明人： Gary Sugar , Yohannes Tesfai
CPC分类号： G01S11/06 , G01S5/0252 , G01S5/14
摘要： A device and method are provided for estimating a position of a target device (e.g., a device emitting radio frequency energy) based on data pertaining to strength of an emission received from the target device. At a mobile device, emissions are received from the target device when the mobile device is at each of a plurality of positions to produce receive signal strength data representative thereof. In addition, at the mobile device, signals are received from each of a plurality of reference devices at a corresponding known position (and transmitted with known transmit powers) when the mobile device is at each of said plurality of positions to produce receive signal strength data representative thereof. The position of the target device is estimated based on receive signal strength data associated with received emissions from the target device and receive signal strength data associated with received signals from the reference devices. Using the estimated position and estimated transmit power of the target device, a zone of impact of the target device is determined with respect to other wireless activity based on the estimated position and estimated transmit power of the target device.
摘要翻译： 提供了一种用于基于从目标设备接收的发射强度的数据来估计目标设备（例如，发射射频能量的设备）的位置的设备和方法。 在移动设备处，当移动设备处于多个位置中的每一个位置时，从目标设备接收发射，以产生表示其的接收信号强度数据。 另外，在移动设备处，当移动设备处于所述多个位置中的每一个位置时，在相应的已知位置（并以已知的发射功率发射），从多个参考设备中的每个接收信号，以产生接收信号强度数据 代表。 基于与来自目标设备的接收到的发射相关联的接收信号强度数据来估计目标设备的位置，并且接收与来自参考设备的接收信号相关联的信号强度数据。 使用目标设备的估计位置和估计发射功率，基于目标设备的估计位置和估计发射功率，相对于其他无线活动来确定目标设备的影响区域。
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26.发明申请System and method for locating radio emitters using self-calibrated path loss computation 有权使用自校准路径损耗计算定位无线电发射器的系统和方法公开(公告)号：US20050285792A1
公开(公告)日：2005-12-29
申请号：US10976509
申请日：2004-10-29
申请人： Gary Sugar , Yohannes Tesfai
发明人： Gary Sugar , Yohannes Tesfai
CPC分类号： G01S5/0226 , G01S5/0252
摘要： Techniques for reducing the complexity and improving the accuracy of receive signal strength based location systems. The system comprises a plurality of radio sensor devices placed at known positions within a space in which devices are to be located. According to one technique, the path loss is measured between all combinations of pairs of radio sensor devices based on a test signal transmitted by each radio sensor device. A path loss model is evaluated to compute modeled path loss data between all combinations of pairs of radio sensor devices. For each measured path loss, a path loss error relative to each radio sensor device is computed by taking the difference between the measured path loss and the modeled path loss. The path loss error relative to each radio sensor device at any candidate position is interpolated from the computed path loss errors. A path loss estimate between a candidate position and each radio sensor device is computed by adding the interpolated path loss error relative to that radio sensor device at the candidate position and path loss data obtained by evaluating the path loss model based on the distance between at each candidate position and the corresponding radio sensor device. When determining the position of a device emitting radio signals (called a target device), the improved path loss estimate is used. According to another technique, for each radio sensor device, parameters are derived for a path loss model function from the measured path loss between that radio sensor device and each of the other radio sensor devices using a minimization computation. Then, a path loss estimate between a position and each radio sensor device is computed by evaluating the path loss model function using the parameters derived for each radio sensor device.
摘要翻译： 降低接收信号强度的定位系统的复杂性和提高精度的技术。 该系统包括放置在设备将位于的空间内的已知位置处的多个无线电传感器装置。 根据一种技术，基于由每个无线电传感器设备发送的测试信号，在无线电传感器设备对的所有组合之间测量路径损耗。 评估路径损耗模型以在无线电传感器设备对的所有组合之间计算建模的路径损耗数据。 对于每个测量的路径损耗，通过获取所测量的路径损耗和建模的路径损耗之间的差异来计算相对于每个无线电传感器设备的路径损耗误差。 从计算出的路径损耗误差插入相对于任何候选位置处的每个无线电传感器装置的路径损耗误差。 在候选位置与每个无线电传感器装置之间的路径损耗估计是通过将候选位置处的相对于该无线电传感器装置的内插路径损耗误差相加并且通过基于每个无线电传感器装置之间的距离评估路径损耗模型而获得的路径损耗数据来计算的 候选位置和相应的无线电传感器设备。 当确定发射无线电信号的设备的位置（称为目标设备）时，使用改进的路径损耗估计。 根据另一种技术，对于每个无线电传感器设备，使用最小化计算从所述无线电传感器设备和每个其他无线电传感器设备之间的测量路径损耗导出用于路径损耗模型函数的参数。 然后，通过使用为每个无线电传感器设备导出的参数来评估路径损耗模型函数来计算位置和每个无线电传感器设备之间的路径损耗估计。
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