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1. 发明申请

US20050027456A1 Method and arrangement for signal loop test 有权
公开(公告)号：US20050027456A1
公开(公告)日：2005-02-03
申请号：US10840820
申请日：2004-05-07
申请人： Jonas Rosenberg , Fredrik Lindqvist , Adam Wia , Antoni Fertner , Axel Jensen , Per Borjesson , Per Odling
发明人： Jonas Rosenberg , Fredrik Lindqvist , Adam Wia , Antoni Fertner , Axel Jensen , Per Borjesson , Per Odling
IPC分类号： G01R27/28 , G01V1/00 , H04M3/30
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 (Zm(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. 发明申请

US20090213998A1 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性质的方法和装置
公开(公告)号：US20090213998A1
公开(公告)日：2009-08-27
申请号：US12091314
申请日：2005-10-27
申请人： Stefan Allevad , Per Odling , Antoni Fertner , Henrik Back , Fredrik Lindqvist , Per Ola Borjesson , Jaume Rius i Riu
发明人： Stefan Allevad , Per Odling , Antoni Fertner , Henrik Back , Fredrik Lindqvist , Per Ola Borjesson , Jaume Rius i Riu
IPC分类号： 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长度的至少两个频率小于pi，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，其中每个连续估计优选地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pi的那些频率。

3. 发明申请

US20070140474A1 LOAD COIL DETECTION AND LOCALIZATION 有权
标题翻译：负载线圈检测和本地化
公开(公告)号：US20070140474A1
公开(公告)日：2007-06-21
申请号：US11276599
申请日：2006-03-07
申请人： Antoni Fertner , Fredrik Lindqvist , Per Borjesson
发明人： Antoni Fertner , Fredrik Lindqvist , Per Borjesson
IPC分类号： H04M7/04 , H04M9/00
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。

4. 发明授权

US08681945B2 Calibration of a line driving device 有权
标题翻译：线路驱动装置的校准
公开(公告)号：US08681945B2
公开(公告)日：2014-03-25
申请号：US13334602
申请日：2011-12-22
申请人： Klas Ericson , Antoni Fertner , Fredrik Lindqvist , Henrik Almeida , Miguel Berg , Per Ola Borjesson
发明人： Klas Ericson , Antoni Fertner , Fredrik Lindqvist , Henrik Almeida , Miguel Berg , Per Ola Borjesson
IPC分类号： H04M1/24 , H04M3/08 , H04M3/22 , H04M1/00
CPC分类号： H04B3/46 , G01R27/32 , G01R35/005 , H04M3/304 , H04M11/062
摘要： Method, arrangement and devices for calibration of a line driving device, such as a DSLAM, having a line port. The method comprises deriving of a first parameter vector, PVinf, for example Hinf. The parameter vector PVinf is derived by performing, at a first site, an echo measurement on the line driving device while the line port on said line driving device is open. The method further comprises calibrating the line driving device based on the first parameter vector PVinf and a second parameter vector PVref, which second parameter vector is based on information on echo measurements performed on at least one reference line driving device.
摘要翻译：具有线路端口的线路驱动装置（如DSLAM）的校准方法，装置和装置。该方法包括导出第一参数矢量PVinf，例如Hinf。参数矢量PVinf是通过在线路驱动装置上的线路端口打开时在线路驱动装置处的第一站点执行回波测量而导出的。该方法还包括基于第一参数矢量PVinf和第二参数矢量PV ref校准线驱动装置，第二参数矢量基于关于在至少一个参考线驱动装置上执行的回波测量的信息。

5. 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。

6. 发明授权

US07844436B2 Method and localization unit for detecting and locating load coils in a transmission line 有权
标题翻译：用于检测和定位传输线路中负载线圈的方法和定位单元
公开(公告)号：US07844436B2
公开(公告)日：2010-11-30
申请号：US12478908
申请日：2009-06-05
申请人： Fredrik Lindqvist , Antoni Fertner
发明人： Fredrik Lindqvist , Antoni Fertner
IPC分类号： G06F17/50 , G01R15/00
CPC分类号： H04M3/306
摘要： A method and localization unit for localizing load coils within a transmission line. The load coil localization is achieved using a measurement of a Single-Ended Line Testing (SELT) parameter for the transmission line and an approximation of the SELT parameter obtained from a model of the transmission line. The model is based on a parameter vector θ including parameters describing the transmission properties of each load coil and cable section and the length of a plurality of individual cable sections as unknown independent parameters. The location of at least one load coil is determined by substantially minimizing a criterion function that represents a deviation between the measurement of the SELT parameter and the approximation of the SELT parameter obtained from the model. The load coil localization method and unit can be used for both symmetric and asymmetric transmission lines.
摘要翻译：一种用于在传输线路内定位负载线圈的方法和定位单元。使用对传输线的单端线测试（SELT）参数的测量以及从传输线的模型获得的SELT参数的近似来实现负载线圈定位。该模型基于参数向量＆thetas; 包括描述每个负载线圈和电缆部分的传输特性的参数和多个单独的电缆部分的长度作为未知的独立参数。通过基本上最小化表示SELT参数的测量与从模型获得的SELT参数的近似之间的偏差的标准函数来确定至少一个负载线圈的位置。负载线圈定位方法和单位可用于对称和非对称传输线。

7. 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。

8. 发明申请

US20100156553A1 METHOD AND LOCALIZATION UNIT FOR DETECTING AND LOCATING LOAD COILS IN A TRANSMISSION LINE 有权
标题翻译：用于检测和定位传输线中负载线圈的方法和本地化单元
公开(公告)号：US20100156553A1
公开(公告)日：2010-06-24
申请号：US12478908
申请日：2009-06-05
申请人： Fredrik Lindqvist , Antoni Fertner
发明人： Fredrik Lindqvist , Antoni Fertner
IPC分类号： H03H7/38
CPC分类号： H04M3/306
摘要： A method and localization unit for localizing load coils within a transmission line. The load coil localization is achieved using a measurement of a Single-Ended Line Testing (SELT) parameter for the transmission line and an approximation of the SELT parameter obtained from a model of the transmission line. The model is based on a parameter vector θ including parameters describing the transmission properties of each load coil and cable section and the length of a plurality of individual cable sections as unknown independent parameters. The location of at least one load coil is determined by substantially minimizing a criterion function that represents a deviation between the measurement of the SELT parameter and the approximation of the SELT parameter obtained from the model. The load coil localization method and unit can be used for both symmetric and asymmetric transmission lines.
摘要翻译：一种用于在传输线路内定位负载线圈的方法和定位单元。使用对传输线的单端线测试（SELT）参数的测量以及从传输线的模型获得的SELT参数的近似来实现负载线圈定位。该模型基于参数向量＆thetas; 包括描述每个负载线圈和电缆部分的传输特性的参数和多个单独的电缆部分的长度作为未知的独立参数。通过基本上最小化表示SELT参数的测量与从模型获得的SELT参数的近似之间的偏差的标准函数来确定至少一个负载线圈的位置。负载线圈定位方法和单位可用于对称和非对称传输线。

9. 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。

10. 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）

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