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公开(公告)号：US20090197541A1
公开(公告)日：2009-08-06
申请号：US12328249
申请日：2008-12-04
IPC分类号： H04B7/00
CPC分类号： H01Q1/525 , H04B7/15585
摘要： A system and method for detecting antenna coupling and for providing feedback cancellation in response to the antenna coupling includes a signal feedback cancellation circuit configured to be coupled between a signal receiver and a signal transmitter. The feedback cancellation circuit is responsive to received signals, amplified signals and the detection of signal coupling between a receiving antenna any transmitting antenna, for providing a feedback cancellation signal to a signal amplifier. The feedback cancellation circuit may employ time domain or frequency domain methods. In the case of a time domain method, the feedback cancellation circuit may further include a White noise generator which serves to the tune or adjust the feedback cancellation circuit.
摘要翻译： 用于检测天线耦合并用于响应天线耦合提供反馈消除的系统和方法包括被配置为耦合在信号接收器和信号发射器之间的信号反馈消除电路。 反馈消除电路响应于所接收的信号，放大的信号以及接收天线之间的任何发射天线之间的信号耦合的检测，用于向信号放大器提供反馈消除信号。 反馈消除电路可以采用时域或频域方法。 在时域方法的情况下，反馈消除电路还可以包括用于调谐或调整反馈消除电路的白噪声发生器。
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公开(公告)号：US08081945B2
公开(公告)日：2011-12-20
申请号：US12328249
申请日：2008-12-04
CPC分类号： H01Q1/525 , H04B7/15585
摘要： A system and method for detecting antenna coupling and for providing feedback cancellation in response to the antenna coupling includes a signal feedback cancellation circuit configured to be coupled between a signal receiver and a signal transmitter. The feedback cancellation circuit is responsive to received signals, amplified signals and the detection of signal coupling between a receiving antenna any transmitting antenna, for providing a feedback cancellation signal to a signal amplifier. The feedback cancellation circuit may employ time domain or frequency domain methods. In the case of a time domain method, the feedback cancellation circuit may further include a White noise generator which serves to the tune or adjust the feedback cancellation circuit.
摘要翻译： 用于检测天线耦合并用于响应天线耦合提供反馈消除的系统和方法包括被配置为耦合在信号接收器和信号发射器之间的信号反馈消除电路。 反馈消除电路响应于所接收的信号，放大的信号以及接收天线之间的任何发射天线之间的信号耦合的检测，用于向信号放大器提供反馈消除信号。 反馈消除电路可以采用时域或频域方法。 在时域方法的情况下，反馈消除电路还可以包括用于调谐或调整反馈消除电路的白噪声发生器。
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3.发明授权公开(公告)号：US06611231B2
公开(公告)日：2003-08-26
申请号：US09976246
申请日：2001-10-12
IPC分类号： G01S316
CPC分类号： H01Q1/525 , G01S13/74 , H01Q1/521 , H01Q3/2605 , H01Q3/2611 , H01Q21/24 , H04L5/0007 , H04L5/0023 , H04L5/0028 , H04W40/06 , H04W40/08 , H04W88/14 , Y02D70/142 , Y02D70/146 , Y02D70/322 , Y02D70/324 , Y10S370/902 , Y10S370/903 , Y10S370/905 , Y10S370/913
摘要： Methods, apparatuses and systems are provided for use in a wireless routing network. One apparatus, for example, includes an adaptive antenna that is configurable to receive a transmission signal from a transmitter and in response transmit corresponding outgoing multi-beam electromagnetic signals exhibiting a plurality of selectively placed transmission peaks and transmission nulls within a far field region of a coverage area. The adaptive antenna may also be configured to selectively receive at least one incoming electromagnetic signal directed through the coverage area. The adaptive antenna includes at least one antenna array and logic. The antenna array has a plurality of antenna elements. The logic is operatively coupled to the antenna array and configured to selectively control the placement of the transmission peaks and transmission nulls within the outgoing multi-beam electromagnetic signals. The logic may also be configured to selectively control the reception of at least one incoming electromagnetic signal. The logic is configured to be responsive to routing information. Such routing information may be dynamically maintained in one or more routing tables.
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公开(公告)号：US5133083A
公开(公告)日：1992-07-21
申请号：US464466
申请日：1990-01-12
摘要： In an adjacent channel measurement system, a desired channel signal and an adjacent channel signal are generated using a single signal generator. The output from this generator is modulated with a signal from an offset oscillator to produce a carrier and a sideband signal, one in each channel. The ratio of the carrier amplitude to the sideband amplitude is set by the system's modulation index, which is controlled by an audio attenuator on the output of the offset oscillator.
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公开(公告)号：US4234849A
公开(公告)日：1980-11-18
申请号：US850126
申请日：1977-11-10
CPC分类号： H03K23/667
摘要： A high frequency programmable frequency divider operates in a digital manner to divide the frequency of an applied signal by an integer value greater than five. The frequency divider combines emitter coupled logic (ECL) devices to perform a frequency divide algorithm at frequencies of 220 MHz.
摘要翻译： 高频可编程分频器以数字方式工作，将施加信号的频率除以大于5的整数值。 分频器组合发射极耦合逻辑（ECL）器件，以在220 MHz频率下执行频分除法。
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公开(公告)号：US08161528B2
公开(公告)日：2012-04-17
申请号：US10680965
申请日：2003-10-07
摘要： In an exemplary apparatus implementation, an apparatus includes: at least one processor; and one or more media including processor-executable instructions that are capable of being executed by the at least one processor, the processor-executable instructions adapted to direct the apparatus to perform actions including: monitoring at least one signal characteristic for multiple signals that relate to a single source address; and detecting a wireless interloper if a discrepancy is determined to exist with regard to the monitored at least one signal characteristic for the multiple signals. In an exemplary access station implementation, an access station is capable of ascertaining at least one signal characteristic for multiple signals, is configured to detect a wireless interloper with regard to a particular address by analyzing the ascertained at least one signal characteristic for the multiple signals, and is adapted to counter the detected wireless interloper.
摘要翻译： 在示例性装置实现中，装置包括：至少一个处理器; 以及包括能够被至少一个处理器执行的处理器可执行指令的一个或多个媒体，所述处理器可执行指令适于引导所述设备执行动作，所述操作包括：监视与所述至少一个处理器相关的多个信号的至少一个信号特性 一个源地址; 以及如果针对所述多个信号的所述监测到的至少一个信号特性确定存在差异，则检测无线中继器。 在示例性接入站实现中，接入站能够确定多个信号的至少一个信号特性，被配置为通过分析确定的多个信号的至少一个信号特性来检测关于特定地址的无线中间站， 并且适于对所检测到的无线中继器进行计数。
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公开(公告)号：US08731461B2
公开(公告)日：2014-05-20
申请号：US13373637
申请日：2011-11-22
CPC分类号： H04B7/10 , H04B7/0413 , H04B7/155
摘要： A system to repeat MIMO signals in a network by orthogonally polarizing the signals and maintaining the orthogonal polarization.
摘要翻译： 一种通过使信号正交偏振并维持正交极化在网络中重复MIMO信号的系统。
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公开(公告)号：US08412106B2
公开(公告)日：2013-04-02
申请号：US10700329
申请日：2003-11-03
申请人： Marcus da Silva , William J. Crilly, Jr. , James Brennan , Robert J. Conley , Siavash Alamouti , Eduardo Casas , Hujun Yin , Bobby Jose , Yang-Seok Choi , Vahid Tarokh , Praveen Mehrotra
发明人： Marcus da Silva , William J. Crilly, Jr. , James Brennan , Robert J. Conley , Siavash Alamouti , Eduardo Casas , Hujun Yin , Bobby Jose , Yang-Seok Choi , Vahid Tarokh , Praveen Mehrotra
IPC分类号： H04B1/00
CPC分类号： H04B7/0617 , H04B7/04 , H04B7/0621 , H04W16/28 , H04W72/046
摘要： In an implementation of directed wireless communication, a multi-beam directed signal system coordinates directed wireless communication with client devices. A transmit beam-forming network routes data communication transmissions to the client devices via directed communication beams that are emanated from an antenna assembly, and a receive beam-forming network receives data communication receptions from the client devices via the directed communication beams.
摘要翻译： 在有向无线通信的实现中，多波束定向信号系统与客户端设备协调定向无线通信。 发射波束形成网络经由从天线组件发出的定向通信波束将数据通信传输路由到客户机设备，并且接收波束形成网络经由定向通信波束从客户端设备接收数据通信接收。
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公开(公告)号：US20120128038A1
公开(公告)日：2012-05-24
申请号：US13373637
申请日：2011-11-22
IPC分类号： H04B3/36
CPC分类号： H04B7/10 , H04B7/0413 , H04B7/155
摘要： A system to repeat MIMO signals in a network by orthogonally polarizing the signals and maintaining the orthogonal polarization.
摘要翻译： 一种通过使信号正交偏振并维持正交极化在网络中重复MIMO信号的系统。
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公开(公告)号：US07177369B2
公开(公告)日：2007-02-13
申请号：US10131864
申请日：2002-04-25
CPC分类号： H04B7/0617
摘要： Methods, apparatuses and systems are provided for identifying at least one multipath transmission delay within a reverse path data signal, determining at least one forward path pre-equalization parameter based on the transmission delay, and modifying a forward path data signal based on the forward path pre-equalization parameter. A reverse link transmission is used to help characterize the multipath delays that may exist between communicating devices. The reverse path data signal can include a training sequence or other like known/substantially-known data that can be analyzed to detect transmission delays, especially delays that extend beyond established guard intervals. Such pre-equalization techniques can be advantageously combined, for example, with antenna arrangements that support transmission diversity, spatial division transmission, and/or other like techniques.
摘要翻译： 方法，装置和系统被提供用于识别反向路径数据信号内的至少一个多径传输延迟，基于传输延迟确定至少一个前向路径预均衡参数，以及基于前向路径修改前向路径数据信号 预均衡参数。 反向链路传输用于帮助表征通信设备之间可能存在的多径延迟。 反向路径数据信号可以包括训练序列或其他类似已知/基本上已知的数据，其可以被分析以检测传输延迟，特别是超出所建立的保护间隔的延迟。 这种预均衡技术可以有利地例如与支持传输分集，空间分割传输和/或其他类似技术的天线布置组合。
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