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1.发明申请公开(公告)号：US20170310405A1
公开(公告)日：2017-10-26
申请号：US15135823
申请日：2016-04-22
Applicant: Nokia Solutions and Networks Oy
Inventor： Darrell Barabash , Ramasamy Gopalan
IPC: H04B17/345
Abstract: Methods, apparatus, and computer program products using spectrum analysis or cross correlation techniques to discriminate against interference. These approaches are straight forward if both the forward and reflected signals contain complex or quadrature (I and Q) samples. But, if only single axis samples are available as is often the case to reduce the sampling rate, the resulting samples could represent the I component, the Q component or, more likely, some combination of the two. This generally requires some type of time alignment procedure to ensure proper phase. Assuming that the transmitted signal exists in complex form, this signal can be mathematically rotated in phase and then single axis sampled for comparison against the single axis reflected signal. If the rotation is done over equally spaced intervals that spans one complete cycle, the average of the absolute value all such return loss ratios will approach the actual return loss ratio and the interference will be suppressed. The resultant can be compared to a threshold value and trigger an alarm.
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Patent Agency Ranking
公开(公告)号：US11637609B2
公开(公告)日：2023-04-25
申请号：US17274337
申请日：2018-09-10
Applicant: NOKIA SOLUTIONS AND NETWORKS OY
Inventor： Mehdi Alijan , Darrell Barabash
Abstract: Systems, methods, apparatuses, and computer program products for array antenna adaptive digital pre-distortion with Bayesian observation analysis are provided. One method may include selecting a plurality of patch elements from an array antenna of a network element. The method may also include determining an accuracy confidence value for each patch element. A set of coefficients of the antenna array may be generated. In addition, an ensemble of non-linear forward models may be generated using the accuracy confidence value and the set of coefficients. Further, an array of pre-distortion signals may be generated using the ensemble of non-linear forward models, and each antenna of the array antenna may be configured with a corresponding pre-distortion signal from the array of pre-distortion signals.
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公开(公告)号：US10859615B2
公开(公告)日：2020-12-08
申请号：US15135823
申请日：2016-04-22
Applicant: Nokia Solutions and Networks Oy
Inventor： Darrell Barabash , Ramasamy Gopalan
Abstract: Methods, apparatus, and computer program products using spectrum analysis or cross correlation techniques to discriminate against interference. These approaches are straight forward if both the forward and reflected signals contain complex or quadrature (I and Q) samples. But, if only single axis samples are available as is often the case to reduce the sampling rate, the resulting samples could represent the I component, the Q component or, more likely, some combination of the two. This generally requires some type of time alignment procedure to ensure proper phase. Assuming that the transmitted signal exists in complex form, this signal can be mathematically rotated in phase and then single axis sampled for comparison against the single axis reflected signal. If the rotation is done over equally spaced intervals that spans one complete cycle, the average of the absolute value all such return loss ratios will approach the actual return loss ratio and the interference will be suppressed. The resultant can be compared to a threshold value and trigger an alarm.
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公开(公告)号：US09385820B2
公开(公告)日：2016-07-05
申请号：US14434785
申请日：2012-10-12
Applicant: Nokia Solutions and Networks Oy
Inventor： Darrell Barabash , Russell Morris
CPC classification number: H04B17/101 , G01R27/06 , H04B1/0458 , H04B1/0475 , H04B17/103 , H04B17/12 , H04W24/06
Abstract: A method includes accessing sets of correlation values, each set corresponding to a correlation performed between a number of first samples and a same number of second samples. The sets of correlation values were determined by aligning the number of the first samples with selected second samples and sliding the number of first samples across the second samples to select different sets of the second samples. The first samples are samples of a forward signal transmitted over a cable/connector system to one or more antennas, and the second samples are samples of a reflected RF signal that comprises a reflected version of the forward signal. The method includes determining a maximum value from the plurality of sets of correlation values, and associating the maximum value with a return loss of the cable/connector system. Apparatus, computer programs, and program products are also disclosed.
Abstract translation: 一种方法包括访问相关值集合，每个集合对应于在多个第一样本和相同数量的第二样本之间执行的相关。 通过将第一样品的数量与所选择的第二样品对齐并在第二样品上滑动第一样品的数量以选择不同的第二样品组来确定相关值组。 第一个样本是通过电缆/连接器系统传送到一个或多个天线的正向信号的采样，第二采样是包括正向信号的反射版本的反射RF信号的样本。 该方法包括从多组相关值中确定最大值，并将最大值与电缆/连接器系统的回波损耗相关联。 还公开了装置，计算机程序和程序产品。
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公开(公告)号：US11765831B1
公开(公告)日：2023-09-19
申请号：US18120638
申请日：2023-03-13
Applicant: NOKIA SOLUTIONS AND NETWORKS OY
Inventor： Darrell Barabash , Abhijit Ghose , Joseph Smetana
Abstract: According to an aspect, there is provided a printed circuit board-based resistive device. The resistive device comprises, arranged on a substrate of the printed circuit board of the printed circuit board: a first conductive pad; a second conductive pad; a resistive patch having a first longitudinal end connected to the first conductive pad and a second longitudinal end connected to the second conductive pad, wherein a width of the resistive patch varies along a length of the resistive patch and has a maximum at a point between the first and second longitudinal ends.
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公开(公告)号：US09654233B2
公开(公告)日：2017-05-16
申请号：US14781945
申请日：2013-04-04
Applicant: Nokia Solutions and Networks Oy
Inventor： Darrell Barabash , Russell Morris
CPC classification number: H04B17/101 , G01R27/06 , H04B1/0458 , H04B1/0475 , H04B17/00 , H04B17/23 , H04L27/265
Abstract: A method includes determining a total forward power using a frequency domain version of a forward signal transmitted over a cable/connector system to one or more antennas. The method includes determining a total reflected power using a frequency domain version of a reflected signal including a reflected version of the forward signal. The method also includes determining a condition of the cable/connector system using the total forward power and the total reflected power. The method may include determining an estimated reflection coefficient based on the total forward power and the total reflected power and associating the estimated reflection coefficient with the condition of the cable/connector system. Apparatus, program products, and software are also disclosed.
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