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Method and apparatus for acquiring crosstalk information

A transmission power, practical technology, applied in the field of communication transmission to achieve the effect of improving computing power

Inactive Publication Date: 2009-05-13
迟国明
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, DSM technology has not been commercialized yet, and the current mainstream architecture of the first layer of DSM is as follows: figure 1 As shown, there is a spectrum controller (SMC, Spectrum Maintenance Center) and three control interfaces, respectively DSM-S, DSM-C, DSM-D

Method used

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  • Method and apparatus for acquiring crosstalk information
  • Method and apparatus for acquiring crosstalk information

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Embodiment Construction

[0029] The implementation of the present invention provides a method and device for obtaining crosstalk information. According to the validity judgment conditions, the effective transmission power spectrum and reception noise spectrum data of the digital subscriber line side are obtained, and the crosstalk function is estimated to obtain the crosstalk information.

[0030] see figure 1 , is a schematic flowchart of the first embodiment of the method for obtaining crosstalk information provided by the present invention

[0031] In step S100, during the operation of the DSL line, the SMC randomly or periodically sends a data collection instruction through the DSM-C interface to collect the actual transmission power spectrum TxPSD (n, k, t) and the reception noise spectrum RxNPSD ( n, k, t);

[0032] In step S101, the LT at the digital subscriber line side sends the data to the SMC through the DSM-D interface after receiving the data collection instruction. If it is assumed tha...

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Abstract

The invention discloses a method for obtaining crosstalk interference information, comprising the steps: according to the validity judgment condition, efficient actual transmission power at the side of a digital subscriber line and receiving noise spectrum data are obtained; and crosstalk interference function is calculated according to the efficient actual transmission power and the receiving noise spectrum data. The embodiment of the invention also provides a device used for obtaining crosstalk interference information. By adopting the invention, according to the validity judgment condition, the efficient actual transmission power at the side of a digital subscriber line and the receiving noise spectrum data can be obtained; the crosstalk interference function can be imputed without needing large amount of data, so that the crosstalk interference information can be obtained, and the operational capability is greatly enhanced.

Description

technical field [0001] The invention relates to communication transmission technology, in particular to a method and device for acquiring crosstalk information. Background technique [0002] With the increase of the frequency band used by the xDSL technology, the problem of crosstalk (crosstalk), especially the crosstalk in the high frequency band becomes increasingly prominent. Therefore, there is a Dynamic Spectrum Management (DSM, Dynamic Spectrum Manage) topic in technical research to study how to reduce and avoid the impact of crosstalk between multiple users. Such as iterative water injection, optimal power spectrum control, etc. [0003] However, DSM technology has not been commercialized yet, and the current mainstream architecture of the first layer of DSM is as follows: figure 1 As shown, there is a spectrum controller (SMC, Spectrum Maintenance Center) and three control interfaces, namely DSM-S, DSM-C, and DSM-D. The SMC reads the working status and other param...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/20H04B3/04
Inventor 方李明
Owner 迟国明
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