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公开(公告)号：US08659989B2
公开(公告)日：2014-02-25
申请号：US13022078
申请日：2011-02-07
CPC分类号： H04L43/0858 , G01S5/0221
摘要： A system and method for calculating a time of arrival (TOA) of an electromagnetic signal is presented. A method receives a fast Fourier transform (FFT) signal that is a FFT of an original electromagnetic signal containing symbol data. The FFT signal is either multiplied or divided with a value to remove the symbol data. Removing the symbol data generates a perturbed data values representing perturbed signal with a perturbed covariance. The method calculates a perturbed covariance of the perturbed data values. After the perturbed covariance is calculated, the method at least partially corrects the perturbed covariance to produce a corrected covariance. The TOA of the original electromagnetic signal is calculated based, at least in part, on the perturbed covariance.
摘要翻译： 提出了一种用于计算电磁信号到达时间（TOA）的系统和方法。 一种方法接收作为包含符号数据的原始电磁信号的FFT的快速傅里叶变换（FFT）信号。 FFT信号被乘以或除以一个值去除符号数据。 去除符号数据会产生扰动的数据值，表示扰动信号与扰动协方差。 该方法计算扰动数据值的扰动协方差。 在计算了扰动协方差之后，该方法至少部分地校正扰动协方差以产生校正的协方差。 至少部分地基于扰动协方差来计算原始电磁信号的TOA。
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2.发明授权Geometric detector for communicating through constant modulus (CM) interferers 失效几何检测器，用于通过恒模（CM）干扰源进行通信公开(公告)号：US08477890B2
公开(公告)日：2013-07-02
申请号：US13056699
申请日：2010-05-24
申请人： Lee M. Garth , Gary R. Lomp , Matthew J. Sherman
发明人： Lee M. Garth , Gary R. Lomp , Matthew J. Sherman
CPC分类号： H04L25/03006
摘要： A desired signal modulated with N symbols is detected in the presence of a constant modulus (CM) interferer that produces M symbols. Observation samples corresponding to the desired signal and the interferer are obtained from a signal recovery stage. N observation constellations are defined, each having M constellation points corresponding to the symbols produced by the interferer, and the points form a circular perimeter of the constellation with a radius corresponding to the strength of the interferer. The perimeter of each constellation is centered on one of N defined symbol points representing the different possible symbols of the desired signal. Distances between the observation samples and the circular perimeter of each observation constellation are determined. For each observation sample, the symbol point on which the constellation perimeter closest to the sample is centered, is selected as a symbol of the desired signal.
摘要翻译： 在存在产生M个符号的恒定模量（CM）干扰源的情况下，检测用N个符号调制的期望信号。 从信号恢复阶段获得与期望信号和干扰源对应的观测样本。 定义N个观测星座，每个观测星座具有对应于由干扰源产生的符号的M个星座点，并且该点形成具有对应于干扰源的强度的半径的星座的圆形周长。 每个星座的周长以表示所需信号的不同可能符号的N个定义的符号点之一为中心。 确定观察样本与每个观察星座的圆周长之间的距离。 对于每个观察样本，最接近采样的星座周长的符号点居中，被选为所需信号的符号。
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3.发明申请METHOD AND SYSTEM TO MAKE CURRENT WIRELESS RADIOS COGNITIVE USING AN EXTERNAL SENSOR AND APPLICATION LEVEL MESSAGING 有权使用外部传感器和应用电平消息发送电流无线射频识别的方法和系统公开(公告)号：US20120142386A1
公开(公告)日：2012-06-07
申请号：US13320416
申请日：2011-03-11
申请人： Apurva N. Mody , Matthew J. Sherman , Kwok N. Yau , Alan Trojan , Sharon K. Sputz , Joseph Farkas
发明人： Apurva N. Mody , Matthew J. Sherman , Kwok N. Yau , Alan Trojan , Sharon K. Sputz , Joseph Farkas
IPC分类号： H04W88/02
CPC分类号： H04W16/14 , H04W72/082
摘要： A system and method for converting a non-cognitive radio into a cognitive radio is presented. A cognitive radio system includes, a non-cognitive radio; an electronic device, a spectrum sensing logic and configuration and management logic. The electronic device is connected to the non-cognitive radio so that it receives and/or transmits messages to/from a wireless network. The configuration and management logic is connected between the non-cognitive radio and the spectrum sensing logic. The spectrum sensing logic and the configuration and management logic are removable from the non-cognitive radio allowing the cognitive radio to operate in a non-cognitive mode. The spectrum sensing logic senses a wireless environment to determine available frequencies and available channels. The configuration and management logic transmits available frequencies, available channels or other spectrum data to a remote spectrum manager that is managing access to the wireless network.
摘要翻译： 提出了一种用于将非认知无线电转换为认知无线电的系统和方法。 认知无线电系统包括非认知无线电; 电子设备，频谱感测逻辑和配置和管理逻辑。 电子设备连接到非认知无线电，使得其接收和/或向无线网络发送消息。 配置和管理逻辑连接在非认知无线电和频谱感测逻辑之间。 频谱感测逻辑和配置和管理逻辑可从非认知无线电中移除，使认知无线电以非认知模式工作。 频谱感测逻辑检测无线环境以确定可用频率和可用信道。 配置和管理逻辑将可用频率，可用信道或其他频谱数据发送到正在管理对无线网络的接入的远程频谱管理器。
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公开(公告)号：US20110194402A1
公开(公告)日：2011-08-11
申请号：US13022078
申请日：2011-02-07
CPC分类号： H04L43/0858 , G01S5/0221
摘要： A system and method for calculating a time of arrival (TOA) of an electromagnetic signal is presented. A method receives a fast Fourier transform (FFT) signal that is a FFT of an original electromagnetic signal containing symbol data. The FFT signal is either multiplied or divided with a value to remove the symbol data. Removing the symbol data generates a perturbed data values representing perturbed signal with a perturbed covariance. The method calculates a perturbed covariance of the perturbed data values. After the perturbed covariance is calculated, the method at least partially corrects the perturbed covariance to produce a corrected covariance. The TOA of the original electromagnetic signal is calculated based, at least in part, on the perturbed covariance.
摘要翻译： 提出了一种用于计算电磁信号到达时间（TOA）的系统和方法。 一种方法接收作为包含符号数据的原始电磁信号的FFT的快速傅里叶变换（FFT）信号。 FFT信号被乘以或除以一个值去除符号数据。 去除符号数据会产生扰动的数据值，表示扰动信号与扰动协方差。 该方法计算扰动数据值的扰动协方差。 在计算了扰动协方差之后，该方法至少部分地校正扰动协方差以产生校正的协方差。 至少部分地基于扰动协方差来计算原始电磁信号的TOA。
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公开(公告)号：US07650150B1
公开(公告)日：2010-01-19
申请号：US11235927
申请日：2005-09-27
申请人： Diakoumis Parissis Gerakoulis , Kenny Xiaojian Huang , Robert Raymond Miller, II , Matthew J. Sherman
发明人： Diakoumis Parissis Gerakoulis , Kenny Xiaojian Huang , Robert Raymond Miller, II , Matthew J. Sherman
摘要： Methods, devices and systems for WLAN communication are described. Intercell interference between overlapping WLAN cells is mitigated by a combination of frequency reuse, code division and time resource negotiation. Information used for time resource negotiation can be broadcast via beacon signal or communicated via a wireline backbone system which interconnects access points.
摘要翻译： 描述了用于WLAN通信的方法，设备和系统。 重叠WLAN小区之间的小区间干扰通过频率重用，码分割和时间资源协商的组合来缓解。 用于时间资源协商的信息可以经由信标信号广播或者经由连接接入点的有线主干系统进行通信。
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6.发明授权Method and apparatus for code division switching of communication signals by trunk coding 失效通过中继编码对通信信号进行码分割的方法和装置公开(公告)号：US07356306B2
公开(公告)日：2008-04-08
申请号：US11389896
申请日：2006-03-27
申请人： Matthew J. Sherman
发明人： Matthew J. Sherman
CPC分类号： H04B7/216 , H04B7/1858
摘要： A method provides for trunk group satellite switching using a code division multiple access (CDMA) scheme. The method includes receiving inbound satellite beams carrying individually encoded user signals including a plurality of inbound trunk groups, processing and mapping the trunk group elements to a plurality of outbound trunk groups, routing the outbound trunk groups to appropriate outbound satellite beams and transmitting the outbound beams based on common destination parameters. The trunk group switching allows for a reduction of on-board switching complexity, volume, and costs.
摘要翻译： 一种方法提供使用码分多址（CDMA）方案的中继线群卫星切换。 该方法包括接收携带单独编码的用户信号的入站卫星波束，包括多个入站中继线群，处理并将中继线群组元件映射到多个出站中继线群组，将出站中继线路路由到适当的出站卫星波束，并发送出站波束 基于通用目标参数。 中继线群组交换允许降低车载交换复杂性，数量和成本。
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7.发明授权Method and system for optimally serving stations on wireless LANs using a controlled contention/resource reservation protocol of the IEEE 802.11e standard 有权使用IEEE 802.11e标准的受控争用/资源预留协议在无线局域网上优化服务站的方法和系统公开(公告)号：US07289529B2
公开(公告)日：2007-10-30
申请号：US10230116
申请日：2002-08-29
申请人： Matthew J. Sherman
发明人： Matthew J. Sherman
IPC分类号： H04L12/417
摘要： A method for optimally serving Stations (STA) on Wireless Local Area Network (LAN) using a Controlled Contention/Resource Reservation protocol of the IEEE 802.11e standard. The Wireless LAN includes multiple STAs, mobile or Stationary, airlinked to an access point as a Basic Service Set (BSS). A Hybrid Coordinator (HC) is co-located with the access point for allocating the bandwidth for the BSS using a Controlled Contention/Resource Reservation protocol defined in the IEEE Standard 802.11(e). The HC transmits Contention Control (CC) frames and initiates Controlled Contention Intervals (CCI) having a selected number of slotted intervals. HC receives Resource Reservations (RR) detailing bandwidth needs from STA contenders during a specified time interval called the Controlled Contention Interval (CCI.). Several parameters are installed in each CC for contention control purpose. The several parameters are controlled to optimize efficient use of the wireless medium and reduce access delays for RR frames contending for the wireless medium.
摘要翻译： 一种使用IEEE 802.11e标准的受控竞争/资源预留协议在无线局域网（LAN）上优化服务站（STA）的方法。 无线局域网包括多个STA（移动或固定），作为基本服务组（BSS），作为基本服务组（BSS）连接到接入点。 混合协调器（HC）与接入点位于一起，用于使用IEEE标准802.11（e）中定义的受控竞争/资源预留协议为BSS分配带宽。 HC发送竞争控制（CC）帧并启动具有选定数量的时隙间隔的受控竞争间隔（CCI）。 HC在指定的时间间隔（称为受控竞争间隔（CCI。））中接收来自STA竞争者的带宽需求的资源预留（RR）。 每个CC中安装了几个参数用于争用控制目的。 控制几个参数以优化无线介质的有效使用，并减少与无线介质竞争的RR帧的接入延迟。
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8.发明授权Metropolitan networks based on fiber and free space access distribution system 失效基于光纤和自由空间接入分配系统的城域网公开(公告)号：US07280757B1
公开(公告)日：2007-10-09
申请号：US11216820
申请日：2005-08-31
IPC分类号： H04J14/00
CPC分类号： H04J14/0283 , H04J14/0227 , H04J14/0228 , H04J14/0241 , H04J14/0284 , H04J14/0286 , H04Q11/0067 , H04Q2011/0073 , H04W40/02
摘要： An architecture for facilitating wavelength-specific and packet-switched routing comprises a primary metropolitan fiber ring, a primary distribution/aggregation node in the primary metropolitan fiber ring and a local service domain further comprising a secondary aggregation node in communication with the primary distribution/aggregation node. A network to provide local metropolitan switching and routing and broadband local access distribution described in terms of its component layers comprises a distribution/aggregation routing layer that interfaces with a primary fiber metropolitan ring and a local customer primary distribution/aggregation node via transport branches of a mesh architecture, a local distribution and routing layer that routes specific wavelengths and newly assigned wavelengths to and from a customer's premises and a cross-connect layer that handles customer specific wavelength and packet routing via one of fiber, millimeter wave radio and free space optical communications.
摘要翻译： 用于促进波长特定和分组交换路由的架构包括主要城域光纤环，主城域光纤环中的主要分布/聚合节点和还包括与主要分布/聚合通信的辅助聚合节点的本地服务域 节点。 提供本地大都市交换和路由以及其组件层描述的宽带本地访问分配的网络包括分布/聚合路由层，其通过传输分支与主要光纤城域环和本地客户主分布/聚合节点进行接口 网格架构，本地分布和路由层，其将特定波长和新分配的波长路由到客户的场所，以及交叉连接层，其通过光纤，毫米波无线电和自由空间光通信中的一个处理客户特定的波长和分组路由 。
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公开(公告)号：US07133381B2
公开(公告)日：2006-11-07
申请号：US10086533
申请日：2002-03-04
申请人： Matthew J. Sherman
发明人： Matthew J. Sherman
CPC分类号： H04W74/0808 , H04L1/16 , H04W28/18 , H04W84/12
摘要： An 802.11 source station transmits a signal with the duration field other than that required for the transmission to prevent transmission by other stations during known sequences. Thus, the source station uses the duration field to spoof the actual time the medium will be occupied, to stations within range of the signal. A station within range of the transmitted signal will check the duration field of the transmitted signal, and update the station's network allocation vector. Thus, the station will not transmit because the station's network allocation vector indicates that the medium is in use, even though the station maybe unable to hear the carrier. Accordingly, spoofed stations may, for example, 1) delay transmission until a more critical transmission has completed, 2) allow unknown or foreign protocol to have preferential use of the medium, 3) prevent interference from hidden stations, and 4) allow sharing of the medium by overlapping basic service sets.
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10.发明授权Traffic management methods for mitigation of interference between signals of satellite systems in relative motion 失效用于减轻卫星系统相对运动信号之间的干扰的交通管理方法
公开(公告)号：US5943608A
公开(公告)日：1999-08-24
申请号：US684647
申请日：1996-07-19
申请人： Matthew J. Sherman
发明人： Matthew J. Sherman
CPC分类号： H04B7/18513
摘要： In an environment of competing satellite systems having in part shared bands/channel frequencies and at least one system having non-interfering dedicated bands/channels, interference between shared bands/channels of the two systems is mitigated by a method as recited in the appended claims, interference probabilities are determined and based on these probabilities and interference criteria to be met. Interference is minimized by making initial channel assignments to dedicated channels and assigning shared channels in accordance with traffic controls and limits are developed so as not to violate the interference criteria.
摘要翻译： 在具有部分共享频带/信道频率的竞争卫星系统和至少一个具有非干扰专用频带/信道的系统的环境中，两个系统的共享频带/信道之间的干扰通过所附权利要求中所述的方法来减轻 ，确定干扰概率并根据这些概率和干扰标准来实现。 通过对专用信道进行初始信道分配并根据流量控制和限制来分配共享信道以便不违反干扰标准来最小化干扰。
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