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    AN ARRANGEMENT AND METHOD RELATING TO ANALYSIS OF TRANSMISSION LINES
    4.
    发明申请
    AN ARRANGEMENT AND METHOD RELATING TO ANALYSIS OF TRANSMISSION LINES 审中-公开
    关于传输线分析的安排和方法

    公开(公告)号：WO2011053212A3

    公开(公告)日：2012-07-26

    申请号：PCT/SE2010050015

    申请日：2010-01-08

    Applicant: ERICSSON TELEFON AB L M ,  FERTNER ANTONI ,  BOERJESSON PER OLA ,  ERICSON KLAS ,  LINDQVIST FREDRIK ,  PAPPA IOANNA ,  HOEST STEFAN ,  BERG MIGUEL

    Inventor： FERTNER ANTONI ,  BOERJESSON PER OLA ,  ERICSON KLAS ,  LINDQVIST FREDRIK ,  PAPPA IOANNA ,  HOEST STEFAN ,  BERG MIGUEL

    IPC: H04B3/46 ,  G01R31/02 ,  G01R31/08

    CPC classification number: H04B3/466 ,  H04M3/26

    Abstract: The present invention relates to an arrangement for analyzing transmission line properties. Measurement data providing means (10) provide data of a first frequency dependent line property, line property calculation arrangement (20) with model handling means (21A), a Hubert transform handler (22) and line property determination means (23) calculate said first property based on model parameters, line resistance at 0 frequency, roc r cut-off frequency, v, line capacitance C8r and line inductance ?^. The line model handling means (21A) 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 (23; 23A) calculates the first property and criteria function application means (40) uses the measured first property and the calculated first property for model parameters to find optimized numerical model parameter values.

    Abstract translation: 本发明涉及一种用于分析传输线路特性的装置。 测量数据提供装置（10）提供具有模型处理装置（21A）的第一频率相关线性属性的线数属性计算装置（20），休伯特变换处理器（22）和线属性确定装置（23） 属性基于模型参数，0频率线路电阻，roc r截止频率，v，线路电容C8r和线路电感？^。 线路模型处理装置（21A）经由与线路电阻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变换的参数化闭合形式表达式计算，或者列表。 行特性确定装置（23; 23A）计算第一属性和标准函数应用装置（40）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。

    6.
    发明专利
    未知

    公开(公告)号：BRPI0520629A2

    公开(公告)日：2009-05-19

    申请号：BRPI0520629

    申请日：2005-10-27

    Applicant: ERICSSON TELEFON AB L M

    Inventor： ALLEVAD STEFAN ALF ,  IDLING PER MIKAEL ,  FERTNER ANTONI ,  BACK HENRIK DANIEL ,  LINDQVIST FREDRIK ,  BOERJESSON PER OLA ,  RIU JAUME RIUS I

    IPC: H04B3/46 ,  G01R27/02

    Abstract: 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 &pgr;, 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 &pgr;.

    8.
    发明专利
    未知

    公开(公告)号：DE602004011333D1

    公开(公告)日：2008-03-06

    申请号：DE602004011333

    申请日：2004-03-04

    Applicant: ERICSSON TELEFON AB L M

    Inventor： BOERJESSON PER OLA ,  FERTNER ANTONY ,  JENSEN AXEL FRANK ,  LINDQVIST FREDRIK ,  ROSENBERG JONAS ,  WIA ADAM ,  OEDLIN PER

    IPC: H04M3/30 ,  G01R27/28 ,  G01V1/00 ,  H04B3/46

    Abstract: The length and attenuation of a signal line between a transmitter and a customer premises equipment is to be estimated. A frequency dependent line input impedance (Z in (f)) as seen from the transmitter, is measured and an absolute impedance value (oe Z in (f) oe), is generated. The latter is shown as a curve (A1) in the diagram with the frequency (f) on the abscissa and the impedance (oe Z in (f) oe) on the ordinate. Extreme values (Max. 1 , Max 2 , Max 3 ; Min 1 , Min 2 , Min 3 ) arc denoted and a frequency distance (FD 1 -FD 4 ) between two consecutive of the extreme values is generated. The line length (L) is generated as L=½.vop/FD 1 , in which vop is the velocity of propagation of a signal on the line. The attenuation is estimated by multiplying the line length with an average attenuation value for the actual line type. The advantages are that the line length can be estimated with good accuracy in a simple manner for short lines and that the line attenuation is estimated in a simple manner.

    METODO PARA TRANSMISION DE ANALISIS DE LINEA.
    10.
    发明专利
    METODO PARA TRANSMISION DE ANALISIS DE LINEA. 未知

    公开(公告)号：MX2011004917A

    公开(公告)日：2011-05-30

    申请号：MX2011004917

    申请日：2009-11-27

    Applicant: ERICSSON TELEFON AB L M

    Inventor： BOERJESSON PER OLA ,  BERG MIGUEL ,  CEDERHOLM DANIEL ,  ERICSON KLAS

    IPC: H04B3/46

    Abstract: Una medición SELT de FDR se hace en una banda de paso de un plano de banda de DSL, usando un PSD permitido por la máscara de PSD. Mediciones adicionales también se pueden hacer en una banda de paso adyacente y bandas adicionales, y los resultados combinados para crear un resultado de medición de banda amplia. Cuando se transforma en el dominio de tiempo (v. gr., mediante transformación de Fourier inversa para producir la respuesta de impulso de línea) mayor resolución en tiempo (y por lo tanto mayor resolución espacial) se logra. A fin de compensar por las mediciones de errores de calibración de AGC usando diferentes pasos de AGC se pueden llevar a escala para ajustarse suavemente entre sí. Si las mediciones se traslapan, los resultados de medición en la región de traslape se puede combinar en varias formas para limitar la influencia de ruido y para crear una transición suave de una medición a la siguiente.

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