Patent application number | Description | Published |
20110261932 | METHOD FOR TRANSMISSION LINE ANALYSIS - A FDR SELT measurement is made in a stop band of a DSL band plan, using a PSD allowed by the PSD mask. Further measurements may also be made in an adjacent pass band and further bands, and the results combined to create a wide-band measurement result. When transformed into the time domain (e.g. by inverse Fourier transform to produce the line impulse response) greater resolution in time (and hence greater spatial resolution) is achieved. In order to compensate for AGC calibration errors measurements using different AGC steps may be scaled to fit smoothly to each other. If measurements overlap, measurement results in the region of overlap may be combined in various ways to limit the influence of noise and to create a smooth transition from one measurement to the next. | 10-27-2011 |
20120020398 | Methods and Devices for Transmission Line Analysis - Improved diagnostics of transmission line ( | 01-26-2012 |
20120069883 | Passive Selt - The present invention relates to a method for estimating properties of a transmission line by means of features of a noise spectrum generated by noise entering said transmission line at an intermediate location between the ends of the line. The invention provides possibility to estimate a number of properties, e.g. length of a portion of the transmission line, line attenuation of said Sine portion and even line termination. | 03-22-2012 |
20120163559 | Method for Estimating Transmission Properties of a Telecommunications Transmission Line - Transmission properties of a telecommunications transmission line may be estimated with improved accuracy by numerical solution for Γ of Z | 06-28-2012 |
20120219123 | SINGLE ENDED ESTIMATION OF FAR-END CROSSTALK IN A DIGITAL SUBSCRIBER LINE - An apparatus for estimating far-end crosstalk R | 08-30-2012 |
20120221271 | Method and Arrangement in a Telecommunication System for Estimating Frequency Dependent Resistance - Method and arrangement in a telecommunication system for estimating frequency dependent resistance of a transmission line. Insertion loss per length unit of the transmission line at a first frequency is determined. Thereupon a first resistance per length unit based on the determined insertion loss per length unit of the transmission line is calculated. Effective resistance per length unit at a second frequency based on the calculated first resistance is calculated. The calculated effective resistance could be used when estimating the insertion loss for the second frequency and all frequencies of interest. | 08-30-2012 |
20130201844 | PARAMETER PREDICTION FOR AUTONOMOUS DSL SYSTEM CONFIGURATION PROFILE SELECTION - Method and arrangement for predicting a parameter indicative of an achievable bit rate when using a certain configuration in a digital subscriber line. The method involves obtaining basic configuration parameters of a known configuration; selecting a candidate configuration; and deriving an estimated parameter, indicative of an achievable bit rate, based on the obtained and selected parameters. | 08-08-2013 |
20140313919 | Methods and Devices for Transmission Line Analysis - Improved diagnostics of transmission line noise are enabled by adapting DSL equipment to make measurements of quiet line noise also in the transmit bands, so that noise can be measured at both ends for the same frequency or frequency bands. | 10-23-2014 |