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1. 发明授权

US07069165B2 Method and arrangement for signal loop test 有权
公开(公告)号：US07069165B2
公开(公告)日：2006-06-27
申请号：US10840820
申请日：2004-05-07
申请人： Jonas Gustafsson Rosenberg , Fredrik Lindqvist , Adam Wiå , Antoni Fertner , Axel Frank Jensen , Per Ola Börjesson , Per Ödling
发明人： Jonas Gustafsson Rosenberg , Fredrik Lindqvist , Adam Wiå , Antoni Fertner , Axel Frank Jensen , Per Ola Börjesson , Per Ödling
IPC分类号： G01D18/00 , G01D3/00 , G01R15/00
CPC分类号： G01R27/04 , H04B3/46 , H04M1/24 , H04M3/305 , H04M3/306
摘要： The invention refers to single-ended test of a loop with the aid of a transceiver, wherein an input impedance (Zin(ƒ)) of the loop is generated. The transceiver has a digital part, a codec and an analog part and is connected to the loop. With the aid of a transmitted and a reflected broadband signal (vin, vout) an echo transfer function Hecho(ƒ)=V(f)out/Vin(f) is generated, which also can be expressed as H echo ⁡ ( f ) = H ∞ ⁡ ( f ) ⁢ Z in ⁡ ( f ) + Z h0 ⁡ ( f ) Z in ⁡ ( f ) + Z hyb ⁡ ( f ) . Here Zh0(ƒ), Zhyb(ƒ) and H∞(ƒ) are model values for the transceiver. In a calibration process a test transceiver, with the same type of hardware as the transceiver, is connected to known impedances, replacing the loop. Hecho(ƒ)=V(f)out/Vin(f) is generated for the known impedances and the model values are generated and are stored in a memory in the transceiver. The stored model values are then used when the input impedance (Zin(ƒ)) for the loop is generated after a measurement of the broadband signal (Vin, vout) is performed.

2. 发明授权

US08290122B2 Method and device for estimating properties of a telecommunication transmission line 有权
标题翻译：用于估计电信传输线路性质的方法和装置
公开(公告)号：US08290122B2
公开(公告)日：2012-10-16
申请号：US12091314
申请日：2005-10-27
申请人： Stefan Allevad , Per Ödling , Antoni Fertner , Henrik Back , Fredrik Lindqvist , Per Ola Börjesson , Jaume Rius i Riu
发明人： Stefan Allevad , Per Ödling , Antoni Fertner , Henrik Back , Fredrik Lindqvist , Per Ola Börjesson , Jaume Rius i Riu
IPC分类号： H04M1/24 , H04M3/08 , H04M3/22
CPC分类号： H04B3/46
摘要： A method and device for estimating one or more transmission properties of a telecommunication transmission line. At least one signal is sent on the line, the at least one signal including at least two frequencies for which the absolute value of the line propagation constant times the line length is less than π, and a resulting signal is received. An estimate of at least one transmission line property is then determined by examining the relationship between the sent and resulting signal or signals. The process may be repeated, if necessary. The estimate determination may also be repeated one or more times, with each successive estimate preferably using for the determination only those frequencies for which, as previously estimated, the absolute value of the line propagation constant times the line length is less than π.
摘要翻译：一种用于估计电信传输线的一个或多个传输特性的方法和装置。在该线上发送至少一个信号，所述至少一个信号包括线路传播常数的绝对值乘以线路长度的至少两个频率小于＆pgr，并且接收到所得到的信号。然后，通过检查所发送和产生的信号或信号之间的关系来确定至少一个传输线属性的估计。如果需要，可以重复该过程。估计确定也可以重复一次或多次，其中优选地使用每个连续估计仅用于确定如前所述的线路传播常数的绝对值乘以线长度的频率小于＆pgr的那些频率。

3. 发明授权

US08065100B2 Method and a system for cable or subscriber loop investigation performing loop topology identification 有权
标题翻译：用于电缆或用户环路调查的方法和系统执行环路拓扑识别
公开(公告)号：US08065100B2
公开(公告)日：2011-11-22
申请号：US12162665
申请日：2006-01-31
申请人： Fredrik Lindqvist , Antoni Fertner , Per Ola Börjesson
发明人： Fredrik Lindqvist , Antoni Fertner , Per Ola Börjesson
IPC分类号： G01R11/16 , G01R5/28 , G01R29/08 , G01N35/00
CPC分类号： H04M3/306 , H04B3/46
摘要： A system and method for using loop topology identification to investigate a transmission line having a plurality of cable segments. At a measurement plane for each segment, a probing signal is transmitted into the cable. A reflected signal is detected, and an equivalent total input impedance is calculated. The system iteratively calculates the distance between the measurement planes as well as the length, characteristic impedance, and the propagation constant of each segment. A model is used to calculate the respective equivalent input impedance of each segment using the calculated characteristic impedance, propagation constant, and length of the preceding segment. The equivalent total input impedance is then calculated from the iteratively calculated segment values.
摘要翻译：一种用于使用环路拓扑识别来研究具有多个电缆段的传输线的系统和方法。在每个段的测量平面，探测信号被传输到电缆中。检测反射信号，并计算等效的总输入阻抗。系统迭代地计算测量平面之间的距离以及每段的长度，特征阻抗和传播常数。使用模型使用计算的特征阻抗，传播常数和前一段的长度来计算每个段的相应等效输入阻抗。然后从迭代计算的段值计算等效的总输入阻抗。

4. 发明授权

US07395162B2 Load coil detection and localization 有权
标题翻译：负载线圈检测和定位
公开(公告)号：US07395162B2
公开(公告)日：2008-07-01
申请号：US11276599
申请日：2006-03-07
申请人： Antoni Fertner , Fredrik Lindqvist , Per Ola Börjesson
发明人： Antoni Fertner , Fredrik Lindqvist , Per Ola Börjesson
IPC分类号： G06F19/00
CPC分类号： H04M3/306 , H04M3/2209
摘要： A method is described herein that can be used to detect the presence of a load coil within a transmission line. The method can also be used to determine the number of load coil(s) present within the transmission line. In addition, the method can be used to determine the distance to the first load coil.
摘要翻译：本文描述了可用于检测传输线内的负载线圈的存在的方法。该方法还可以用于确定传输线内存在的负载线圈的数量。此外，该方法可用于确定到第一负载线圈的距离。

5. 发明授权

US09470729B2 Transmission line parameter determination 有权
标题翻译：传输线参数确定
公开(公告)号：US09470729B2
公开(公告)日：2016-10-18
申请号：US14110215
申请日：2011-04-08
申请人： Fredrik Lindqvist , Per Ola Börjesson , Antoni Fertner
发明人： Fredrik Lindqvist , Per Ola Börjesson , Antoni Fertner
IPC分类号： G01R27/02 , H04B3/466
CPC分类号： G01R27/02 , H04B3/466
摘要： The present disclosure relates to determining parameters in a model of a transmission line. For determining the parameters, reflection coefficient defining data and the total capacitance of the transmission line are obtained. Further, true reflection coefficients obtained through the reflection coefficient defining data are applied in an objective function for the line. The objective function for the line is a sum of error signals and each error signal is the difference between a model value of a reflection coefficient and a corresponding true reflection coefficient. Further, the objective function is minimized by utilizing gradients of the objective function with respect to the transmission line parameters to be determined. A capacitive length is employed and at least two further transmission line parameters are determined as combinations of a basic resistive transmission line parameter, a basic capacitive transmission line parameter and a basic inductive transmission line parameter of the transmission line model.
摘要翻译：本公开涉及确定传输线的模型中的参数。为了确定参数，获得反射系数定义数据和传输线的总电容。此外，通过反射系数定义数据获得的真实反射系数被应用于该行的目标函数中。线的目标函数是误差信号的和，每个误差信号是反射系数的模型值和相应的真实反射系数之间的差。此外，通过利用待确定的传输线参数的目标函数的梯度来最小化目标函数。使用电容长度，并且将至少两个另外的传输线参数确定为传输线模型的基本电阻传输线参数，基本电容传输线参数和基本感应传输线参数的组合。

6. 发明申请

US20130158922A1 ESTIMATION OF A QUANTITY RELATED TO IMPEDANCE 审中-公开
标题翻译：估计与阻碍相关的数量
公开(公告)号：US20130158922A1
公开(公告)日：2013-06-20
申请号：US13331200
申请日：2011-12-20
申请人： Antoni Fertner , Henrik Almeida , Miguel Berg , Per Ola Börjesson , Klas Ericson , Fredrik Lindqvist
发明人： Antoni Fertner , Henrik Almeida , Miguel Berg , Per Ola Börjesson , Klas Ericson , Fredrik Lindqvist
IPC分类号： G06F19/00 , G01R27/02
CPC分类号： H04B3/46
摘要： Method, arrangement and network node/device for estimating a quantity related to impedance in a first frequency interval, D1, of a telecommunication transmission line where the transmission line has a length d. The method involves determining a quantity related to impedance of the telecommunication transmission line for at least two frequencies, f1D2 and f2D2, in a second frequency interval D2. The frequencies f1D2 and f2D2 should fulfil the condition that the line length d times the absolute value of the difference between a line propagation constant γ(f1)D2 and a line propagation constant, γ(f2)D2, is less than π, i.e. abs(d*γ(f1)D2−d*γ(f2)D2)
摘要翻译：用于估计传输线具有长度d的电信传输线的第一频率间隔D1中与阻抗相关的量的方法，布置和网络节点/设备。所述方法包括在第二频率间隔D2中确定与至少两个频率f1D2和f2D2的电信传输线路的阻抗有关的数量。频率f1D2和f2D2应满足线路长度d乘以线路传播常数γ（f1）D2与线路传播常数γ（f2）D2之差的绝对值小于pi的条件，即abs （d * gamma（f1）D2-d * gamma（f2）D2）

7. 发明授权

US09009017B2 Arrangement and method relating to analysis of transmission lines 有权
标题翻译：传输线分析的方法和方法
公开(公告)号：US09009017B2
公开(公告)日：2015-04-14
申请号：US13504993
申请日：2010-01-08
申请人： Antoni Fertner , Fredrik Lindqvist , Ioanna Pappa , Klas Ericson , Miguel Berg , Per Ola Börjesson , Stefan Höst
发明人： Antoni Fertner , Fredrik Lindqvist , Ioanna Pappa , Klas Ericson , Miguel Berg , Per Ola Börjesson , Stefan Höst
IPC分类号： G06F17/50 , H04M3/26
CPC分类号： H04B3/466 , H04M3/26
摘要： Embodiments of the present invention relate to an arrangement for analyzing transmission line properties. Measurement data providing means provide data of a first frequency dependent line property, line property calculation arrangement with model handling means, a Hubert transform handler and line property determination means calculate said first property based on model parameters, line resistance at 0 frequency, roc, a cut-off frequency, v, a line capacitance C∞ and a line inductance L∞H. The line model handling means calculates the line inductance L(f) via a Hubert transform of a function of Q(f/v), wherein the function Q(f/v) relates the line resistance R(f) to roc as R(f)=roc·Q(f/v). The Hilbert transform values are calculated using a parameterized closed form expression for the Hubert transform or they are tabulated. The line property determination means calculates the first property and criteria function application means uses the measured first property and the calculated first property for model parameters to find optimized numerical model parameter values.
摘要翻译：本发明的实施例涉及用于分析传输线特性的装置。测量数据提供装置提供第一频率相关线性质的数据，具有模型处理装置的线性属性计算装置，休伯特变换处理器和线性属性确定装置基于模型参数计算所述第一属性，0频率处的线电阻，roc，a 截止频率v，线电容C∞和线电感L∞H。线路模型处理装置通过Q（f / v）函数的休伯特变换来计算线路电感L（f），其中函数Q（f / v）将线路电阻R（f）与roc相关联， f）= roc·Q（f / v）。希尔伯特变换值使用Hubert变换的参数化闭合表达式计算，或者将它们列表。行属性确定装置计算第一属性和标准函数应用装置使用测量的第一属性和所计算的模型参数的第一属性来找到优化的数值模型参数值。

8. 发明申请

US20140025327A1 Transmission Line Parameter Determination 有权
标题翻译：传输线参数确定
公开(公告)号：US20140025327A1
公开(公告)日：2014-01-23
申请号：US14110215
申请日：2011-04-08
申请人： Fredrik Lindqvist , Per Ola Börjesson , Antoni Fertner
发明人： Fredrik Lindqvist , Per Ola Börjesson , Antoni Fertner
IPC分类号： G01R27/02
CPC分类号： G01R27/02 , H04B3/466
摘要： The invention concerns a method for determining parameters in a model of a transmission line. The method comprises obtaining (36) measurements of the line comprising reflection coefficient defining data and the total line capacitance, applying (38) true reflection coefficients obtained through the reflection coefficient defining data in an objective function for the line, which function comprises a sum of error signals, each comprising the difference between a model value of a reflection coefficient and a corresponding true reflection coefficient, minimising (40) the objective function by utilizing gradients of the objective function with respect to the transmission line parameters to be determined and employing a capacitive length and determining (42) at least two further transmission line parameters as combinations of a basic resistive transmission line parameter, a basic capacitive transmission line parameter and a basic inductive transmission line parameter of the transmission line model.
摘要翻译：本发明涉及一种用于确定传输线模型中的参数的方法。该方法包括获得包含反射系数定义数据和总线电容的线的测量（36），将通过反射系数定义数据获得的真实反射系数应用于线路的目标函数中，该函数包括误差信号，每个误差信号包括反射系数的模型值和相应的真实反射系数之间的差异，通过利用目标函数相对于要确定的传输线参数的梯度来最小化（40）目标函数，并采用电容长度，并且确定（42）至少两条另外的传输线参数作为传输线模型的基本电阻传输线参数，基本电容传输线参数和基本感应传输线参数的组合。

9. 发明申请

US20120215503A1 ARRANGEMENT AND METHOD RELATING TO ANALYSIS OF TRANSMISSION LINES 有权
标题翻译：传输线分析方法及方法
公开(公告)号：US20120215503A1
公开(公告)日：2012-08-23
申请号：US13504993
申请日：2010-01-08
申请人： Antoni Fertner , Fredrik Lindqvist , Ioanna Pappa , Klas Ericson , Miguel Berg , Per Ola Börjesson , Stefan Höst
发明人： Antoni Fertner , Fredrik Lindqvist , Ioanna Pappa , Klas Ericson , Miguel Berg , Per Ola Börjesson , Stefan Höst
IPC分类号： G06F17/10
CPC分类号： H04B3/466 , H04M3/26
摘要： Embodiments of the present invention relate to an arrangement for analyzing transmission line properties. Measurement data providing means provide data of a first frequency dependent line property, line property calculation arrangement with model handling means, a Hubert transform handler and line property determination means calculate said first property based on model parameters, line resistance at 0 frequency, roc r cut-off frequency, v, line capacitance C∞r and line inductance Σ̂. The line model handling means calculates the line inductance L(J) via a Hubert transform of Q(f/v)r relating line resistance R(J) to roc such as formula (I). The Hilbert transform values are calculated using a parameterized closed form expression for the Hubert transform or they are tabulated. The line property determination means calculates the first property and criteria function application means uses the measured first property and the calculated first property for model parameters to find optimized numerical model parameter values.
摘要翻译：本发明的实施例涉及用于分析传输线特性的装置。测量数据提供装置提供第一频率相关线性属性的数据，具有模型处理装置的线性属性计算装置，休伯特变换处理器和线性属性确定装置根据模型参数计算所述第一属性，0频率线路电阻，截止频率，v，线电容C∞r和线电感＆Sgr。线路模型处理装置通过与线路电阻R（J）相关的Q（f / v）r的休伯特变换到诸如公式（I）的roc来计算线路电感L（J）。希尔伯特变换值使用Hubert变换的参数化闭合表达式计算，或者将它们列表。行属性确定装置计算第一属性和标准函数应用装置使用测量的第一属性和所计算的模型参数的第一属性来找到优化的数值模型参数值。

10. 发明申请

US20120163559A1 Method for Estimating Transmission Properties of a Telecommunications Transmission Line 有权
标题翻译：估计电信传输线传输特性的方法
公开(公告)号：US20120163559A1
公开(公告)日：2012-06-28
申请号：US13394392
申请日：2009-09-11
申请人： Antoni Fertner , Per Ola Börjesson , Daniel Cederholm
发明人： Antoni Fertner , Per Ola Börjesson , Daniel Cederholm
IPC分类号： H04B3/46
CPC分类号： H04B3/466
摘要： Transmission properties of a telecommunications transmission line may be estimated with improved accuracy by numerical solution for Γ of Zin·jω̂C=Γcoth(Γ). At least one curve is adapted to Γ solutions already obtained and a starting point for numerical solution is selected in dependence of the at least one curve and in dependence of an already obtained solution close in frequency. In a first frequency range, starting points for numerical solution may be calculated from a biquadratic equation. In a second frequency range, a line in the complex plane may be adapted to solutions already obtained and new starting points selected in dependence of the line and in dependence of the previous solution. In a third frequency range, two lines in the frequency plane may be adapted to solutions already obtained and new starting points selected in dependence of the lines.
摘要翻译：电信传输线路的传输特性可以通过＆Ggr的数值解决方案提高精度来估计; 的Zin·jωC=＆Ggr; coth（＆Ggr。）。至少有一条曲线适应于＆Ggr; 已经获得的解决方案和数值解的起点根据至少一条曲线选择，并且依赖于已经获得的频率接近的解。在第一个频率范围内，数值解的起始点可以从二次方程计算。在第二频率范围中，复平面中的线可以适应已经获得的解和根据线选择并且依赖于先前解的新起始点。在第三频率范围内，频率平面中的两条线可以适应已经获得的解和根据线选择的新起点。

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