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公开(公告)号：US20090310649A1
公开(公告)日：2009-12-17
申请号：US12249923
申请日：2008-10-11
申请人： Teresa E. Fisher , Jennifer P. Rolin , Irina Dodoukh , Vernon R. Brethour , Mark D. Roberts , James Richards
发明人： Teresa E. Fisher , Jennifer P. Rolin , Irina Dodoukh , Vernon R. Brethour , Mark D. Roberts , James Richards
CPC分类号： H04B1/7183 , H04B1/7075 , H04B1/719 , H04L25/4902
摘要： An ultra wideband system employing a threshold to detect signal quality during acquisition wherein the threshold is adjusted based on signal characteristics such as packet traffic rate, packet loss rate, and packet loss fraction. In one embodiment, the threshold is adjusted by adjusting the gain of a variable gain stage ahead of the threshold. In another embodiment, gain and threshold are adjusted in a coordinated manner wherein gain is adjusted for low signal levels and threshold is adjusted for high signal levels. In one embodiment, packet traffic rate is evaluated over an interval based on maximum packet length, number of monitor packets, and inter-packet delay. In a further embodiment, multiple ramp builders are operated in parallel at multiple code offset values to generate signal statistics to compare with the threshold. Embodiments are disclosed wherein the thresholds are adaptively adjusted based on signal performance characteristics or the multipath environment.
摘要翻译： 一种采用阈值的超宽带系统，用于在采集期间检测信号质量，其中基于诸如分组业务速率，分组丢失率和分组丢失分数的信号特征来调整阈值。 在一个实施例中，通过调整在阈值之前的可变增益级的增益来调整阈值。 在另一实施例中，以协调的方式调整增益和阈值，其中针对低信号电平调整增益，并且针对高信号电平调整阈值。 在一个实施例中，基于最大分组长度，监视分组数量和分组间延迟，在一个间隔上评估分组业务速率。 在另一实施例中，多个斜坡构建器以多个码偏移值并行操作，以产生与阈值进行比较的信号统计。 公开了其中根据信号性能特征或多路径环境自适应地调整阈值的实施例。
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公开(公告)号：US07436876B2
公开(公告)日：2008-10-14
申请号：US10955118
申请日：2004-09-30
申请人： Teresa E. Fisher , Jennifer P. Rolin , Irina Dodoukh , Vernon R. Brethour , Mark Roberts , James Richards
发明人： Teresa E. Fisher , Jennifer P. Rolin , Irina Dodoukh , Vernon R. Brethour , Mark Roberts , James Richards
IPC分类号： H04B1/00
CPC分类号： H04B1/7183 , H04B1/7075 , H04B1/719 , H04L25/4902
摘要： An ultra wideband system employing a threshold to detect signal quality during acquisition wherein the threshold is adjusted based on signal characteristics such as packet traffic rate, packet loss rate, and packet loss fraction. In one embodiment, the threshold is adjusted by adjusting the gain of a variable gain stage ahead of the threshold. In another embodiment, gain and threshold are adjusted in a coordinated manner wherein gain is adjusted for low signal levels and threshold is adjusted for high signal levels. In one embodiment, packet traffic rate is evaluated over an interval based on maximum packet length, number of monitor packets, and inter-packet delay. In a further embodiment, multiple ramp builders are operated in parallel at multiple code offset values to generate signal statistics to compare with the threshold. Embodiments are disclosed wherein the thresholds are adaptively adjusted based on signal performance characteristics or the multipath environment.
摘要翻译： 一种采用阈值的超宽带系统，用于在采集期间检测信号质量，其中基于诸如分组业务速率，分组丢失率和分组丢失分数的信号特征来调整阈值。 在一个实施例中，通过调整在阈值之前的可变增益级的增益来调整阈值。 在另一实施例中，以协调的方式调整增益和阈值，其中针对低信号电平调整增益，并且针对高信号电平调整阈值。 在一个实施例中，基于最大分组长度，监视分组数量和分组间延迟，在一个间隔上评估分组业务速率。 在另一实施例中，多个斜坡构建器以多个码偏移值并行操作，以产生与阈值进行比较的信号统计。 公开了其中根据信号性能特征或多路径环境自适应地调整阈值的实施例。
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3.发明授权公开(公告)号：US06823022B1
公开(公告)日：2004-11-23
申请号：US09587033
申请日：2000-06-02
申请人： Larry W. Fullerton , James L. Richards , Vernon R. Brethour , Mark D. Roberts , Mark A. Barnes , Ivan A. Cowie , Donald D. Mondul
发明人： Larry W. Fullerton , James L. Richards , Vernon R. Brethour , Mark D. Roberts , Mark A. Barnes , Ivan A. Cowie , Donald D. Mondul
IPC分类号： H04B1500
CPC分类号： H04B1/719 , H04B2001/6908
摘要： A method for mitigating interference in impulse radio communication conveying a message from a transmitting station to a receiving station. The method comprises the steps of: (a) conveying the message in packets; (b) repeating conveyance of selected packets to make up a repeat package; and (c) conveying the repeat package a plurality of times at a repeat period greater than twice the occurrence period of the interference. The communication may convey a message from a proximate transmitter to a distal receiver, and receive a message by a proximate receiver from a distal transmitter. In such a system, the method comprises the steps of: (a) providing interference indications by the distal receiver to the proximate transmitter; (b) using the interference indications to determine predicted noise periods; and (c) operating the proximate transmitter to convey the message according to at least one of the following: (1) avoiding conveying the message during noise periods; (2) conveying the message at a higher power during noise periods; (3) varying error detection coding in the message during noise periods; (4) retransmitting the message following noise periods; (5) avoiding conveying the message when interference is greater than a first strength; (6) conveying the message at a higher power when the interference is greater than a second strength; (7) varying error detection coding in the message when the interference is greater than a third strength; and (8) retransmitting a portion of the message after interference has subsided to less than a predetermined strength.
摘要翻译： 一种用于减轻从发射站向接收站传送消息的脉冲无线电通信中的干扰的方法。 该方法包括以下步骤：（a）以消息的形式传送消息; （b）重复输送所选择的数据包以构成重复包; 和（c）以大于干扰发生周期的两倍的重复周期传送重复包多次。 通信可以将消息从邻近发射机传送到远端接收机，并且从远端发射机接收邻近接收机的消息。 在这种系统中，该方法包括以下步骤：（a）将远端接收机的干扰指示提供给邻近发射机; （b）使用干扰指示来确定预测的噪声周期; （c）根据以下至少一项操作近邻发射机传送消息：（1）避免在噪声周期期间传送消息; （2）在噪声期间以较高的功率传送消息; （3）在噪声周期期间在消息中改变错误检测编码; （4）在噪声周期后重传消息; （5）当干扰大于第一强度时避免传达消息; （6）当干扰大于第二强度时，以更高的功率传送消息; （7）当干扰大于第三强度时，在消息中改变错误检测编码; 和（8）在干扰之后将消息的一部分重新发送到小于预定的强度。
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公开(公告)号：US07477910B2
公开(公告)日：2009-01-13
申请号：US11708822
申请日：2007-02-21
CPC分类号： H04L5/0037 , H04L5/0062 , H04L5/0073 , H04W84/18
摘要： A set of piconets and corresponding methods and computer programs may reduce contention time between piconets. In one embodiment, a seven-length code architecture may be used with group(s) of bands so that contention time cannot exceed 1/7 of the time. Up to seven different bands can be used within each group. When less than seven bands are used (e.g., three or six), at least one of the bands may be assigned to more than one dwell time during a time span. Alternatively, each dwell time within the time span may be assigned to a different band. The state may be changed as needed or desired. Substitution of extra bands may also be used. Using either scheme (repeated bands or changing states), a prime-number architecture can be used with a non-prime number of different bands. Simultaneous communications using at least two bands within a piconet may be used.
摘要翻译： 一组微微网和相应的方法和计算机程序可以减少微微网之间的竞争时间。 在一个实施例中，七长度代码架构可以与频带组一起使用，使得争用时间不能超过时间的1/7。 每个组中最多可以使用七个不同的频段。 当使用小于七个频带（例如，三个或六个）时，在时间间隔期间，可以将至少一个频带分配给多于一个停留时间。 或者，可以将时间范围内的每个停留时间分配给不同的频带。 状态可以根据需要而改变。 也可以使用额外频带的替代。 使用任一方案（重复频带或改变状态），素数架构可以与非素数的不同频带一起使用。 可以使用在微微网内使用至少两个频带的同时通信。
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5.发明授权公开(公告)号：US08666026B1
公开(公告)日：2014-03-04
申请号：US12962383
申请日：2010-12-07
申请人： Vernon R. Brethour
发明人： Vernon R. Brethour
摘要： Embodiments of the present disclosure generally pertain to systems and methods for providing notifications of hazardous ground conditions in telecommunication equipment. A system in accordance with an exemplary embodiment of the present disclosure comprises a control module positioned within a chassis at a network facility. The control module communicates with a plurality of access modules through a backplane of the chassis. At least one of the modules, such as the control module, comprises a voltage sensing element, control logic, and a user interface. The voltage sensing element is configured to measure a potential voltage difference between chassis ground and digital ground and determine whether such voltage difference is hazardous. The control logic is configured to monitor the voltage sensing element and provide an alarm via the user interface when the hazardous condition is present. Accordingly, a user is notified of the hazardous condition and the likelihood of equipment damage, loss of service, and personal injury are reduced.
摘要翻译： 本公开的实施例通常涉及用于在电信设备中提供危险接地状况通知的系统和方法。 根据本公开的示例性实施例的系统包括位于网络设备内的机架内的控制模块。 控制模块通过底盘的背板与多个访问模块进行通信。 诸如控制模块的模块中的至少一个包括电压感测元件，控制逻辑和用户界面。 电压感测元件被配置为测量底盘接地和数字地之间的电压差，并确定这种电压差是否是有害的。 控制逻辑被配置为监视电压感测元件并且当存在危险状况时通过用户接口提供警报。 因此，向用户通知危险状况，并且减少了设备损坏，服务丢失和人身伤害的可能性。
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6.发明申请公开(公告)号：US20090040979A1
公开(公告)日：2009-02-12
申请号：US12244497
申请日：2008-10-02
IPC分类号： H04W72/00
摘要： Methods, systems, and apparatuses are described which are capable of mitigating interference between piconets. Devices on a piconet may detect a certain degree of interference. When this interference is deemed as arising from another piconet, the first piconet may cease transmitting on a set of bands while the interfering piconet may continue to transmit on this set of bands. Furthermore, the interfering piconet may cease transmitting on another orthogonal set of bands within the frequency spectrum while the original piconet continues to utilize these bands. Transmission on these sets of bands may be resumed after a predetermined time period. In this manner interference between the two piconets may be minimized.
摘要翻译： 描述了能够减轻微微网之间的干扰的方法，系统和装置。 微微网上的设备可能会检测到一定程度的干扰。 当这种干扰被认为是由另一个微微网产生时，第一微微网可以在一组频带上停止发送，而干扰微微网可以在该组频带上继续发送。 此外，干扰微微网可以停止在频谱内的另一正交频带组上的发射，而原始微微网继续利用这些频带。 这些频带组的传输可以在预定时间段之后恢复。 以这种方式，两个微微网之间的干扰可以被最小化。
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公开(公告)号：US06529568B1
公开(公告)日：2003-03-04
申请号：US09689702
申请日：2000-10-13
IPC分类号： H03D104
CPC分类号： H04B1/719 , H04B1/71637
摘要： An impulse radio concurrently receives an impulse signal and interference. An interference sampler samples the interference before an expected time of arrival of an impulse in the impulse signal, to produce an interference nulling sample. Then, when the impulse arrives, a data sampler samples the impulse in the presence of the interference to produce a data sample including undesired interference energy. The anticipatory nulling sample is an estimate of the undesired interference energy captured in the subsequent data sample so that the nulling sample can be used to cancel the interference energy from the data sample. When the nulling sample precedes the data sample by an odd number of half cycle periods of the interference, the nulling sample is additively combined with the data sample to derive a corrected data sample, from which a portion of the interference energy is canceled. When the nulling sample precedes the data sample by an even number of half cycle periods of the interference, the nulling sample is subtractively combined with the data sample to derive a corrected data sample.
摘要翻译： 脉冲无线电同时接收脉冲信号和干扰。 干扰采样器在脉冲到达脉冲信号的预期时间之前对干扰进行采样，以产生干扰归零样本。 然后，当脉冲到达时，数据采样器在存在干扰的情况下采样脉冲以产生包含不期望的干扰能量的数据样本。 预期归零样本是对后续数据样本中捕获的不需要的干扰能量的估计，使得归零样本可用于消除来自数据样本的干扰能量。 当归零采样先于干扰的奇数个半周期的数据采样时，将归零采样与数据采样相加组合以导出校正的数据采样，一部分干扰能量从该样本被取消。 当归零采样在干扰的偶数个半周期之前的数据样本之前，将归零样本与数据样本相减，以得到校正的数据样本。
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公开(公告)号：US07853277B2
公开(公告)日：2010-12-14
申请号：US12275534
申请日：2008-11-21
CPC分类号： H04L5/0037 , H04L5/0062 , H04L5/0073 , H04W84/18
摘要： A set of piconets and corresponding methods and computer programs may reduce contention time between piconets. In one embodiment, a seven-length code architecture may be used with group(s) of bands so that contention time cannot exceed 1/7 of the time. Up to seven different bands can be used within each group. When less than seven bands are used (e.g., three or six), at least one of the bands may be assigned to more than one dwell time during a time span. Alternatively, each dwell time within the time span may be assigned to a different band. The state may be changed as needed or desired. Substitution of extra bands may also be used. Using either scheme (repeated bands or changing states), a prime-number architecture can be used with a non-prime number of different bands. Simultaneous communications using at least two bands within a piconet may be used.
摘要翻译： 一组微微网和相应的方法和计算机程序可以减少微微网之间的竞争时间。 在一个实施例中，七长度代码架构可以与频带组一起使用，使得争用时间不能超过时间的1/7。 每个组中最多可以使用七个不同的频段。 当使用小于七个频带（例如，三个或六个）时，在时间间隔期间，可以将至少一个频带分配给多于一个停留时间。 或者，可以将时间范围内的每个停留时间分配给不同的频带。 状态可以根据需要而改变。 也可以使用额外频带的替代。 使用任一方案（重复频带或改变状态），素数架构可以与非素数的不同频带一起使用。 可以使用在微微网内使用至少两个频带的同时通信。
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9.发明申请Method for Generating Communication Signal Sequences Having Desirable Correlation Properties and System for Using Same 失效用于生成具有理想相关属性的通信信号序列和使用相同系统的方法公开(公告)号：US20090022207A1
公开(公告)日：2009-01-22
申请号：US12144979
申请日：2008-06-24
CPC分类号： H04J13/10 , H04B1/7163 , H04B1/71632 , H04B2001/6908
摘要： A method for generating code sequences having good correlation properties comprising steps of selecting a code length comprising a number of chips, selecting a ruler which defines the position of non-zero values within the chips, and overlaying the non-zero values with an amplitude pattern.
摘要翻译： 一种用于产生具有良好相关特性的代码序列的方法，包括以下步骤：选择包括多个芯片的代码长度，选择限定所述芯片内的非零值的位置的标尺，并用幅度图案覆盖所述非零值 。
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10.发明授权
公开(公告)号：US5636130A
公开(公告)日：1997-06-03
申请号：US498338
申请日：1995-07-05
IPC分类号： G06F17/50
CPC分类号： G06F17/5022
摘要： A method is provided for accurately determining the propagation delay of a gate under consideration in a static timing analyzer. This is accomplished by determining both the output load and input rise time of the gate under consideration. These values are then compared with a load versus rise time grid having previously determined values of propagation delay (points) for specified combinations of load and input rise time. These points are then used to interpolate a value of propagation delay for the gate under consideration by an interpolation technique that accounts for at least one of the following non-linear effects: the feed forward capacitance of a gate, soft switching, gate resistance, source and drain resistance, and/or other non-linear effects. The method accounts for each non-linear effect by imparting a corresponding component to propagation delay only in that range of output load and input rise time for which that non-linear effect is most pronounced.
摘要翻译： 提供了一种用于在静态定时分析器中精确地确定考虑的门的传播延迟的方法。 这是通过确定所考虑的门的输出负载和输入上升时间来实现的。 然后将这些值与具有先前确定的负载和输入上升时间的组合的传播延迟（点）值的负载对上升时间网格进行比较。 这些点然后用于通过考虑以下非线性效应中的至少一个的内插技术来内插所考虑的门的传播延迟的值：栅极的前馈电容，软开关，栅极电阻，源极 和漏极电阻，和/或其他非线性效应。 该方法通过仅在该输出负载的范围和非线性效应最显着的输入上升时间赋予相应的分量来传播每个非线性效应。
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