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公开(公告)号：US08699971B1
公开(公告)日：2014-04-15
申请号：US13679025
申请日：2012-11-16
申请人： Shubha L. Kadambe , Jason A. Fuemmeler , Carlos J. Chavez , William S. Spencer , Gina M. Reyes , Robert J. Frank , Michael N. Newhouse
发明人： Shubha L. Kadambe , Jason A. Fuemmeler , Carlos J. Chavez , William S. Spencer , Gina M. Reyes , Robert J. Frank , Michael N. Newhouse
IPC分类号： H04B17/00
CPC分类号： G01S5/0215 , H04B1/70735 , H04B17/27 , H04B17/336 , H04B17/345 , H04K3/22 , H04K3/228 , H04K3/45 , H04K3/822
摘要： An apparatus for identifying a specific emitter in the presence of noise and/or interference is disclosed. The apparatus includes a sensor configured to sense radio frequency signal data, the signal data containing noise and signal from at least one emitter, a reference estimation unit configured to estimate a reference signal relating to the signal transmitted by one emitter, a feature estimation unit configured to generate one or more estimates of one or more feature from the reference signal and the signal transmitted by that particular emitter, and an emitter identifier configured to identify the signal transmitted by that particular emitter as belonging to a specific device using one or more feature estimates. The emitter identifier identifies the signal transmitted by that particular emitter as belonging to a specific device using Gaussian Mixture Models and the Bayesian decision engine.
摘要翻译： 公开了一种用于在存在噪声和/或干扰的情况下识别特定发射器的装置。 该装置包括：传感器，被配置为感测射频信号数据，包含噪声的信号数据和来自至少一个发射器的信号;参考估计单元，被配置为估计与由一个发射器发送的信号有关的参考信号;配置的特征估计单元 从所述参考信号和由所述特定发射器发送的信号产生一个或多个特征的一个或多个估计，以及发射器标识符，其被配置为使用一个或多个特征估计来识别由所述特定发射器发送的属于特定设备的信号 。 发射器标识符将由特定发射器发送的信号识别为使用高斯混合模型和贝叶斯判决引擎的特定设备。
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公开(公告)号：US08514130B1
公开(公告)日：2013-08-20
申请号：US13075645
申请日：2011-03-30
IPC分类号： H04B7/00
CPC分类号： H04B7/0491 , H01Q3/446 , H01Q9/32 , H01Q19/32
摘要： The present disclosure is directed to a system and method for providing directional spectral awareness via an antenna system which includes a single parasitic antenna and a processor, the processor being communicatively coupled with the parasitic antenna. The antenna system allows for quick scanning of all sectors included in a plurality of sectors of an RF environment being monitored by the antenna system. The antenna system also allows for monitoring sectors of interest. The directionality of the parasitic antenna of the antenna system may reduce interference and multipath along with providing improved SNR due to antenna gain, thereby allowing for collection of signals of interest in a more favorable environment, thereby enabling analysis such as frequency and spatial use, signal detection, signal identification, and source geolocation to succeed when it may have failed if an omni-directional antenna were used.
摘要翻译： 本公开涉及一种用于经由包括单个寄生天线和处理器的天线系统提供定向频谱感知的系统和方法，所述处理器与所述寄生天线通信耦合。 天线系统允许对由天线系统监控的RF环境的多个扇区中包括的所有扇区进行快速扫描。 天线系统还允许监视感兴趣的部门。 天线系统的寄生天线的方向性可以减少干扰和多路径以及由于天线增益而提供改善的SNR，从而允许在更有利的环境中收集感兴趣的信号，从而使得诸如频率和空间使用的信号 检测，信号识别和源地理位置，如果使用全向天线可能失败。
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3.发明授权公开(公告)号：US07957451B1
公开(公告)日：2011-06-07
申请号：US12074799
申请日：2008-03-06
申请人： David K. Baugh , Joseph F. Jiacinto , Robert J. Frank , Michael N. Newhouse , Dana J. Jensen , Kent D. Benson , Daniel M. Zange , Gunther B. Frank , Bruce S. Kloster , Richard L. Robertson , Karl F. Hoech
发明人： David K. Baugh , Joseph F. Jiacinto , Robert J. Frank , Michael N. Newhouse , Dana J. Jensen , Kent D. Benson , Daniel M. Zange , Gunther B. Frank , Bruce S. Kloster , Richard L. Robertson , Karl F. Hoech
IPC分类号： H04B1/00
CPC分类号： H04B1/7143
摘要： A spread spectrum communication system includes a transceiver configured to transmit a spread spectrum waveform. The spread spectrum waveform comprises transmitted signals at varying frequencies within a radio frequency spectrum of operation. The frequency variation is controlled according to a hopping sequence. A spectral sensor of the communication system is configured to dynamically scan the radio frequency spectrum of operation and to generate channel occupancy data based upon the scans. A real time hopping sequence generator is configured to dynamically generate the hopping sequence in real time as a function of the channel occupancy data.
摘要翻译： 扩频通信系统包括被配置为发射扩频波形的收发器。 扩频波形包括在操作的射频频谱内的变化频率的发射信号。 根据跳频序列控制频率变化。 通信系统的光谱传感器被配置为动态地扫描操作的射频频谱并且基于扫描生成信道占用数据。 实时跳频序列生成器被配置为根据信道占用数据实时动态生成跳频序列。
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公开(公告)号：US07280464B1
公开(公告)日：2007-10-09
申请号：US10259767
申请日：2002-09-27
IPC分类号： H04J11/00
CPC分类号： H04L27/2662 , H04L5/0007 , H04L5/0048 , H04L27/2657 , H04L27/2675
摘要： An orthogonal frequency division multiplexing (OFDM) communications system transmits data on a plurality of subcarriers and has a featureless synchronization signal. The OFDM communications system transmits synchronization tones on pseudorandomly selected subcarriers. A receiver generates the same synchronization tones and performs a correlation on the received signal with the receiver synchronization tones. The correlation is performed at the beginning and the end of the synchronization symbol. A product of the two correlations results in a magnitude peak and a phase difference. The magnitude peak is used to determine the location in time of the sync symbol and the phase difference is used to determine the frequency offset of the received signal.
摘要翻译： 正交频分复用（OFDM）通信系统在多个子载波上发送数据并具有无特征同步信号。 OFDM通信系统在伪随机选择的子载波上发送同步音调。 接收机产生相同的同步音，并且用接收机同步音进行接收信号的相关。 相关性在同步符号的开始和结束时执行。 两个相关的乘积导致幅度峰值和相位差。 幅度峰值用于确定同步符号的时间位置，并且使用相位差来确定接收信号的频率偏移。
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公开(公告)号：US08326240B1
公开(公告)日：2012-12-04
申请号：US12891624
申请日：2010-09-27
申请人： Shubha L. Kadambe , Jason A. Fuemmeler , Carlos J. Chavez , W. Sam Spencer , Gina M. Reyes , Robert J. Frank , Michael N. Newhouse
发明人： Shubha L. Kadambe , Jason A. Fuemmeler , Carlos J. Chavez , W. Sam Spencer , Gina M. Reyes , Robert J. Frank , Michael N. Newhouse
CPC分类号： G01S5/0215 , H04B1/70735 , H04B17/27 , H04B17/336 , H04B17/345 , H04K3/22 , H04K3/228 , H04K3/45 , H04K3/822
摘要： An apparatus for identifying a specific emitter in the presence of noise and/or interference is disclosed. The apparatus includes a sensor configured to sense radio frequency signal data, the signal data containing noise and signal from at least one emitter, a reference estimation unit configured to estimate a reference signal relating to the signal transmitted by one emitter, a feature estimation unit configured to generate one or more estimates of one or more feature from the reference signal and the signal transmitted by that particular emitter, and an emitter identifier configured to identify the signal transmitted by that particular emitter as belonging to a specific device using one or more feature estimates. The emitter identifier identifies the signal transmitted by that particular emitter as belonging to a specific device using Gaussian Mixture Models and the Bayesian decision engine. The apparatus may also include an SINR enhancement unit configured to enhance the SINR of the data before the reference estimation unit estimates the reference signal.
摘要翻译： 公开了一种用于在存在噪声和/或干扰的情况下识别特定发射器的装置。 该装置包括：传感器，被配置为感测射频信号数据，包含噪声的信号数据和来自至少一个发射器的信号;参考估计单元，被配置为估计与由一个发射器发送的信号有关的参考信号;配置的特征估计单元 从所述参考信号和由所述特定发射器发送的信号产生一个或多个特征的一个或多个估计，以及发射器标识符，其被配置为使用一个或多个特征估计来识别由所述特定发射器发送的属于特定设备的信号 。 发射器标识符将由特定发射器发送的信号识别为使用高斯混合模型和贝叶斯判决引擎的特定设备。 该装置还可以包括被配置为在参考估计单元估计参考信号之前增强数据的SINR的SINR增强单元。
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公开(公告)号：US09554352B1
公开(公告)日：2017-01-24
申请号：US11800132
申请日：2007-05-04
摘要： A mobile radio has more than one channel, each channel corresponding to a programmable transceiver circuit. The mobile radio also includes at least one high gain antenna coupled to at least one of the programmable transceiver circuits. A location determining circuit is configured to determine the location of the mobile radio. A processor is coupled to the transceivers and to the location determining circuit. The processor runs a program logic that is configured to identify whether the mobile radio is in a location that enables the mobile radio to extend the reach of the network both due to its location and due to the use of the at least one high gain antenna. The processor also runs a program logic to carry out spectrum sensing to identify available spectral resources based on communication traffic on various frequency bands.
摘要翻译： 移动无线电具有多于一个信道，每个信道对应于可编程收发器电路。 移动无线电还包括耦合到至少一个可编程收发器电路的至少一个高增益天线。 位置确定电路被配置为确定移动无线电的位置。 处理器耦合到收发器和位置确定电路。 处理器运行程序逻辑，其被配置为识别移动无线电是否处于使移动无线电能够由于其位置以及由于使用至少一个高增益天线而延伸网络的覆盖范围的位置。 处理器还运行程序逻辑以执行频谱感测以基于各种频带上的通信业务来识别可用的频谱资源。
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公开(公告)号：US09057772B1
公开(公告)日：2015-06-16
申请号：US12891609
申请日：2010-09-27
申请人： Carlos J. Chavez , W. Sam Spencer , Shubha L. Kadambe , Robert J. Frank , Gina M. Reyes , Michael N. Newhouse , Jason A. Fuemmeler
发明人： Carlos J. Chavez , W. Sam Spencer , Shubha L. Kadambe , Robert J. Frank , Gina M. Reyes , Michael N. Newhouse , Jason A. Fuemmeler
IPC分类号： H04B17/00 , G01S5/02 , H04B1/7073 , H04B17/27 , H04B17/336 , H04B17/345
CPC分类号： G01S5/0215 , H04B1/70735 , H04B17/27 , H04B17/336 , H04B17/345
摘要： Disclosed is an apparatus for estimating the features of a radio frequency signal including a reference signal generator configured for generating a reference signal from a complex signal and one or more feature estimation units configured to generate one or more feature estimates from the reference signal and the complex signal. Techniques for creating reference signals from both signals spread by a scrambling code and FM signals are discussed.
摘要翻译： 公开了一种用于估计射频信号的特征的装置，其包括被配置为从复信号生成参考信号的参考信号发生器和被配置为从参考信号和复合体生成一个或多个特征估计的一个或多个特征估计单元 信号。 讨论了通过扰码和FM信号扩展的两个信号创建参考信号的技术。
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公开(公告)号：US07388540B1
公开(公告)日：2008-06-17
申请号：US10853605
申请日：2004-05-25
CPC分类号： H04B17/27
摘要： A method for transmitting data from a transmitter to a receiver in an ad hoc large scale directional network includes the followings steps. A first training sequence is sent by a transmitter in an ad hoc directional network. The first training sequence is received by a receiver in the ad hoc directional network. The receiver determines a first apparent direction from which the first training sequence is sent. The receiver sends a second training sequence to the transmitter. The transmitter determines a second apparent direction from which the second training sequence is sent. The transmitter directs a signal with the first training sequence to the receiver. The transmitter sends the signal with the first training sequence to the receiver. The receiver receives the first training sequence. The receiver is directed to the first apparent direction to receive the signal.
摘要翻译： 一种用于在自组织大规模定向网络中从发射机向接收机发送数据的方法包括以下步骤。 第一训练序列由自组织定向网络中的发射机发送。 第一训练序列由ad hoc定向网络中的接收机接收。 接收机确定发送第一训练序列的第一表观方向。 接收机向发射机发送第二训练序列。 发射机确定发送第二训练序列的第二视在方向。 发射机将具有第一训练序列的信号引导到接收机。 发射机将具有第一训练序列的信号发送到接收机。 接收器接收第一训练序列。 接收机被引导到第一表观方向以接收信号。
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公开(公告)号：US07382846B1
公开(公告)日：2008-06-03
申请号：US10953224
申请日：2004-09-29
CPC分类号： H04L7/042 , H04L27/2017
摘要： A method of correlating a signal to a synchronization pattern is disclosed. The signal has a waveform with frequency and phase angle components that may be varied, at each repeated signal pulse, to communicate a change in a bit pattern of the signal. A synchronization pattern is generated using knowledge of phase rotation direction due to two consecutive bits in a synchronization key. The signal is compared with the synchronization pattern. It is determined whether the comparison of the signal and the synchronization pattern indicate a correlation between the signal and the synchronization pattern.
摘要翻译： 公开了一种将信号与同步模式相关联的方法。 信号具有在每个重复的信号脉冲下可以改变频率和相位角分量的波形，以传达信号的位模式的改变。 使用同步密钥中的两个连续比特的相位旋转方向的知识来生成同步模式。 该信号与同步模式进行比较。 确定信号和同步模式的比较是否表示信号和同步模式之间的相关性。
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公开(公告)号：US08743854B1
公开(公告)日：2014-06-03
申请号：US12891588
申请日：2010-09-27
申请人： Jason A. Fuemmeler , Gina M. Reyes , Shubha L. Kadambe , Robert J. Frank , Carlos J. Chavez , W. Sam Spencer , Michael N. Newhouse
发明人： Jason A. Fuemmeler , Gina M. Reyes , Shubha L. Kadambe , Robert J. Frank , Carlos J. Chavez , W. Sam Spencer , Michael N. Newhouse
IPC分类号： H04B7/216
CPC分类号： H04B17/336 , H04B1/7107
摘要： An apparatus and method for signal separation and SINR improvement is disclosed. In particular, disclosed is an iterative technique whereby a noisy signal, that may include signals from one or more distinct emitters, is first improved through an SINR improvement technique. Next, one signal from the noisy signal is identified and a reference signal substantially free of noise and interference is generated for this signal, and then this reference signal is subtracted from the noisy signal. This process is repeated until no other signals may be identified. In this way, the signal with the highest SINR may be identified first and then removed from the original signal. As such, the identified signal is no longer present as interference for the remaining signals, thus improving each of the remaining signals' respective SINRs.
摘要翻译： 公开了一种用于信号分离和SINR改进的装置和方法。 特别地，公开了一种迭代技术，其中可以包括来自一个或多个不同发射器的信号的噪声信号首先通过SINR改进技术得到改进。 接下来，识别来自噪声信号的一个信号，并为该信号产生基本上没有噪声和干扰的参考信号，然后从噪声信号中减去该参考信号。 重复该过程，直到不能识别出其它信号。 以这种方式，可以首先识别具有最高SINR的信号，然后从原始信号中去除。 因此，所识别的信号不再作为对剩余信号的干扰而存在，从而改善了每个剩余信号的各自的SINR。
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