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1. 发明授权

US08776221B2 Distinguishing between voice traffic and data links 有权
标题翻译：区分语音流量和数据链接
公开(公告)号：US08776221B2
公开(公告)日：2014-07-08
申请号：US13342293
申请日：2012-01-03
申请人： Raghuram Rangarajan , David Kloper , Yohannes Tesfai
发明人： Raghuram Rangarajan , David Kloper , Yohannes Tesfai
IPC分类号： G06F11/10 , H03M13/09
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。

2. 发明申请

US20120291127A1 DISTINGUISHING BETWEEN BLUETOOTH VOICE AND DATA LINKS 有权
标题翻译：蓝牙声音和数据链接之间的差异
公开(公告)号：US20120291127A1
公开(公告)日：2012-11-15
申请号：US13342293
申请日：2012-01-03
申请人： Raghuram Rangarajan , David Kloper , Yohannes Tesfai
发明人： Raghuram Rangarajan , David Kloper , Yohannes Tesfai
IPC分类号： G06F21/20 , G06F11/10 , H03M13/09
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。

3. 发明申请

US20090291657A1 Sharing AGC Loop Between Demodulator and Spectrum Analysis System 有权
标题翻译：在解调器和频谱分析系统之间共享AGC环路
公开(公告)号：US20090291657A1
公开(公告)日：2009-11-26
申请号：US12125563
申请日：2008-05-22
申请人： David Kloper , Yohannes Tesfai , Chandra Vaidyanathan
发明人： David Kloper , Yohannes Tesfai , Chandra Vaidyanathan
IPC分类号： H04B1/06
CPC分类号： H03G3/3078 , H03G3/3068
摘要： Systems and methods for sharing an AGC loop between a wireless data demodulator and a spectrum analysis module that operates simultaneously with the data demodulator. In one embodiment, a predetermined hold time prevents the AGC loop from changing gain too often, thereby allowing the spectrum analysis module to collect reliable data. In another embodiment, the hold time may be extended to coincide with a spectrum analysis event, such as a boundary of an FFT block. In still another embodiment, an FFT valid signal is provided such that collected FFT blocks can be designated as suspect and then subsequently processed accordingly.
摘要翻译：用于在无线数据解调器和与数据解调器同时工作的频谱分析模块之间共享AGC环路的系统和方法。在一个实施例中，预定的保持时间防止AGC环路频繁地改变增益，从而允许频谱分析模块收集可靠的数据。在另一个实施例中，保持时间可以被扩展以与诸如FFT块的边界的频谱分析事件一致。在另一个实施例中，提供FFT有效信号，使得收集的FFT块可以被指定为可疑，然后相应地进行处理。

4. 发明授权

US08111783B2 Capturing and using radio events 有权
标题翻译：捕获和使用无线电活动
公开(公告)号：US08111783B2
公开(公告)日：2012-02-07
申请号：US12140707
申请日：2008-06-17
申请人： David Kloper , Yohannes Tesfai , Chandra Vaidyanathan
发明人： David Kloper , Yohannes Tesfai , Chandra Vaidyanathan
IPC分类号： H03K9/00 , H04L27/00
CPC分类号： H04B17/318 , G01S7/021 , H04L7/04
摘要： In one embodiment a method includes, collecting in-phase/quadrature (I/Q) data representing energy detected by a radio in a frequency band, performing a fast Fourier transform (FFT) on the I/Q data resulting in a stream of FFT blocks, identifying using the stream of FFT blocks a pulse in the frequency band, recording in a radio events record (RER) a plurality of radio events and corresponding timestamps that are indicative, respectively, of a type and time of individual state changes in the radio during the collecting step, and, for example, using at least two of the radio events to identify, in the time domain, a beginning time and end time of the pulse detected in the stream of FFT blocks.
摘要翻译：在一个实施例中，一种方法包括：收集表示在频带中由无线电装置检测到的能量的同相/正交（I / Q）数据，对I / Q数据执行快速傅里叶变换（FFT），得到FFT流块，使用FFT流来识别在频带中的脉冲，记录在无线电事件记录（RER）中的多个无线电事件和对应的时间戳，分别指示各个状态变化的类型和时间在收集步骤期间，例如，使用至少两个无线电事件在时域中识别在FFT块流中检测到的脉冲的开始时间和结束时间。

5. 发明授权

US08086199B2 Sharing AGC loop between demodulator and spectrum analysis system 有权
标题翻译：在解调器和频谱分析系统之间共享AGC环路
公开(公告)号：US08086199B2
公开(公告)日：2011-12-27
申请号：US12125563
申请日：2008-05-22
申请人： David Kloper , Yohannes Tesfai , Chandra Vaidyanathan
发明人： David Kloper , Yohannes Tesfai , Chandra Vaidyanathan
IPC分类号： H04B17/00 , H04B1/06
CPC分类号： H03G3/3078 , H03G3/3068
摘要： Systems and methods for sharing an AGC loop between a wireless data demodulator and a spectrum analysis module that operates simultaneously with the data demodulator. In one embodiment, a predetermined hold time prevents the AGC loop from changing gain too often, thereby allowing the spectrum analysis module to collect reliable data. In another embodiment, the hold time may be extended to coincide with a spectrum analysis event, such as a boundary of an FFT block. In still another embodiment, an FFT valid signal is provided such that collected FFT blocks can be designated as suspect and then subsequently processed accordingly.
摘要翻译：用于在无线数据解调器和与数据解调器同时工作的频谱分析模块之间共享AGC环路的系统和方法。在一个实施例中，预定的保持时间防止AGC环路频繁地改变增益，从而允许频谱分析模块收集可靠的数据。在另一个实施例中，保持时间可以被扩展以与诸如FFT块的边界的频谱分析事件一致。在另一个实施例中，提供FFT有效信号，使得收集的FFT块可以被指定为可疑，然后相应地进行处理。

6. 发明申请

US20090310661A1 Capturing and Using Radio Events 有权
标题翻译：捕获和使用无线电活动
公开(公告)号：US20090310661A1
公开(公告)日：2009-12-17
申请号：US12140707
申请日：2008-06-17
申请人： David Kloper , Yohannes Tesfai , Chandra Vaidyanathan
发明人： David Kloper , Yohannes Tesfai , Chandra Vaidyanathan
IPC分类号： H04B17/00
CPC分类号： H04B17/318 , G01S7/021 , H04L7/04
摘要： In one embodiment a method includes, collecting in-phase/quadrature (I/Q) data representing energy detected by a radio in a frequency band, performing a fast Fourier transform (FFT) on the I/Q data resulting in a stream of FFT blocks, identifying using the stream of FFT blocks a pulse in the frequency band, recording in a radio events record (RER) a plurality of radio events and corresponding timestamps that are indicative, respectively, of a type and time of individual state changes in the radio during the collecting step, and, for example, using at least two of the radio events to identify, in the time domain, a beginning time and end time of the pulse detected in the stream of FFT blocks.
摘要翻译：在一个实施例中，一种方法包括：收集表示在频带中由无线电装置检测到的能量的同相/正交（I / Q）数据，对I / Q数据执行快速傅里叶变换（FFT），得到FFT流块，使用FFT流来识别在频带中的脉冲，在无线电事件记录（RER）中记录多个无线电事件和对应的时间戳，分别指示各个状态变化的类型和时间在收集步骤期间，例如，使用至少两个无线电事件在时域中识别在FFT块流中检测到的脉冲的开始时间和结束时间。

7. 发明申请

US20090296848A1 JOINT MAXIMAL RATIO COMBINING USING TIME-DOMAUIN BASED SIGNAL PROCESSING 审中-公开
标题翻译：使用基于时间信号的信号处理联合最大比率组合
公开(公告)号：US20090296848A1
公开(公告)日：2009-12-03
申请号：US12538446
申请日：2009-08-10
申请人： Yohannes Tesfai , Chandra Vaidyanathan , Gary L. Sugar
发明人： Yohannes Tesfai , Chandra Vaidyanathan , Gary L. Sugar
IPC分类号： H03K5/159 , H04B7/02
CPC分类号： H04B7/0413 , H04B7/0615 , H04B7/0669 , H04B7/0671 , H04B7/0845 , H04B7/0854 , H04B7/0857 , H04L1/06 , H04L25/0204 , H04L27/2601 , H04L2025/03445 , H04W52/42
摘要： A communication device transmits and receives communication signals with another communication device via a plurality of antennas, a plurality of transmit tapped delay-line filters, a plurality of receive tapped delay-line filters, a combiner/analyzer with a plurality of filters for signal processing; and a plurality of computation blocks. The computation blocks determine complex weights for the tapped delay-line filters for optimizing the received signal-to-noise ratio and the range of communication of the communication device.
摘要翻译：通信设备经由多个天线，多个发射抽头延迟线滤波器，多个接收抽头延迟线滤波器，具有多个用于信号处理的滤波器的组合器/分析器来发送和接收与另一通信设备的通信信号 ; 和多个计算块。计算块确定用于优化接收到的信噪比和通信设备的通信范围的抽头延迟线滤波器的复权重。

8. 发明授权

US07050452B2 Systems and methods for interference mitigation among multiple WLAN protocols 有权
公开(公告)号：US07050452B2
公开(公告)日：2006-05-23
申请号：US09970846
申请日：2001-10-05
申请人： Gary L. Sugar , William R. Seed , Yohannes Tesfai
发明人： Gary L. Sugar , William R. Seed , Yohannes Tesfai
IPC分类号： H04J3/16 , H04J3/22
CPC分类号： H04W16/14 , H04L1/16 , H04W28/26 , H04W74/085 , H04W80/00 , H04W84/12
摘要： Interference mitigation or collision avoidance systems and procedures to allow different wireless local area network (WLAN) communication protocols to co-exist in the same frequency band, such as an unlicensed frequency band used for short-range wireless communications. The procedures ensure substantial throughput of information carried by signals of each WLAN protocol while preventing collisions between signals of different protocols.

9. 发明申请

US20060128311A1 Matching receive signal strenth data associated with radio emission sources for positioning applications 审中-公开
标题翻译：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。

10. 发明授权

US06965762B2 System and method for antenna diversity using joint maximal ratio combining 失效
标题翻译：使用联合最大比组合的天线分集的系统和方法
公开(公告)号：US06965762B2
公开(公告)日：2005-11-15
申请号：US10695229
申请日：2003-10-28
申请人： Gary L. Sugar , Chandra Vaidyanathan , Yohannes Tesfai
发明人： Gary L. Sugar , Chandra Vaidyanathan , Yohannes Tesfai
IPC分类号： H01Q3/28 , H03G3/30 , H04B1/04 , H04B7/005 , H04B7/04 , H04B7/06 , H04B7/08 , H04L1/06 , H04L25/02 , H04L25/03 , H04L27/26 , H04B1/06 , H04B1/10 , H04B7/00 , H04B15/00 , H04B17/00
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 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 second communication device determines the best receive weight vector for the its antennas, and from that vector, derives a suitable transmit weight vector for transmission on the plurality of antennas back to the first communication device. Several techniques are provided to determine the optimum transmit weight vector and receive weight vector for communication between the first and second communication devices so that there is effectively joint or composite beamforming between the communication devices.
摘要翻译：提供一种组合波束形成技术，其中第一通信设备具有多个天线，并且第二通信具有多个天线。当第一通信设备向第二通信设备发送时，将发送信号乘以用于由多个天线中的每一个发送的发送权重向量，并且在第二通信设备处由多个天线接收发送信号。第二通信设备确定其天线的最佳接收权重向量，并且从该向量导出用于在多个天线上发送回到第一通信设备的合适的发射权重向量。提供了几种技术来确定用于第一和第二通信设备之间的通信的最佳发送权重向量和接收权重向量，使得在通信设备之间有效地进行联合或合成波束形成。

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