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Method and apparatus for configuring virtual noise parameters on very high speed digital subscriber line

A technology of subscriber line and virtual noise, applied in line transmission parts, cable transmission system, telephone communication, etc., can solve problems such as line instability, complicated situations, and reduced line data rate

Active Publication Date: 2014-07-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, if the virtual noise is set too low, it will cause the line to be unstable; if it is set too high, it may not reduce the data rate of the line
It is necessary to combine virtual noise technology and UPBO technology to reduce line crosstalk, but there are compatibility issues between the two technologies, so the situation is more complicated

Method used

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  • Method and apparatus for configuring virtual noise parameters on very high speed digital subscriber line
  • Method and apparatus for configuring virtual noise parameters on very high speed digital subscriber line
  • Method and apparatus for configuring virtual noise parameters on very high speed digital subscriber line

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Embodiment Construction

[0014] It should be recognized at the outset that while the following provides an intuitive illustration of one or more embodiments, related systems and / or methods may need to be disclosed using various techniques, whether currently known or in existence . The disclosure should in no way be limited to the visual illustrations, drawings and techniques described below, but also include the example designs and implementations described here, with possible modification within the scope of the appended claims and their analogs.

[0015] Disclosed herein is a system and method for configuring noise in a DSL system that includes both relatively short loops and relatively long loops. Virtual noise may be configured in multiple subscriber lines according to the FEXT in the line, for example, UPBO technology may be used to achieve equalization. In this way, it is possible to find an upper bound on the worst-case FEXT PSD, which can be used to determine the receiver reference virtual no...

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Abstract

A transmitter configured to transmit a Digital Subscriber Line (DSL) signal in one of a plurality of subscriber lines based on a virtual reference noise power spectral density (PSD), wherein the virtual reference noise PSD is the worst-case value of the subscriber line The upper limit value of far-end crosstalk (FEXT) PSD is based on. Another of the apparatus includes at least one processor configured to perform a method that includes finding an upper bound on the worst-case FEXT PSD for a plurality of subscriber lines, a line-based worst-case FEXT PSD, finding Calculate the virtual reference noise PSD, and determine the bit loading of the line based on the virtual reference noise or the relative ratio of the receiver virtual reference noise.

Description

[0001] The present invention requires the prior application of the U.S. Provisional Patent Application No. 61 / 167,002 filed on April 6, 2009 by Weidong et al. priority, and claims priority to the prior application of U.S. Patent Application No. 12 / 650781, filed December 31, 2009, entitled "Configuring Virtual Noise Parameters on Very High Speed ​​Digital Subscriber Lines," which earlier The content of the application is incorporated into this text by reference. technical field [0002] The present invention is related to the field of communication technology. More particularly, the present invention relates to Digital Subscriber Line (DSL) technology. Background of the invention [0003] Digital Subscriber Line (DSL) technology can provide relatively large bandwidth for digital communication on existing subscriber lines. When transmitting data on subscriber lines, crosstalk interference may occur between the transmitted signals on adjacent twisted-pair telephone lines, for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M11/00
CPCH04B3/487H04B3/32H04B3/464
Inventor 卫东刘立贺
Owner HUAWEI TECH CO LTD