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Method and device for increasing line rate

A line rate, line technology, applied in the field of data communication

Active Publication Date: 2020-06-02
上海朋邦实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if Vector technology is used, a relatively high rate can be obtained on the line, but at most it can only reach about 95% of the rate without crosstalk

Method used

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  • Method and device for increasing line rate
  • Method and device for increasing line rate
  • Method and device for increasing line rate

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Embodiment Construction

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0036] In order to eliminate the crosstalk on the line, the transmitted signal can be pre-compensated on the network side (CO side) according to the crosstalk parameter fed back by the user side (ie, the CPE side). This technology is called vectoring (Vectoring) processing; The device for vectoring processing is a vectoring control entity (Vectori...

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Abstract

An embodiment of the invention provides a method of increasing a transmission rate, comprising: obtaining, at a transmission end, a precoding coefficient P as indicated by , wherein H-1 is an inverse matrix of a channel transfer matrix H on M twisted pairs, and is a diagonal matrix by taking a direct channel in the channel transfer matrix H as a principle diagonal element; performing, according to the precoding coefficient P, precoding on a signal to be transmitted on the M twisted pairs; and transmitting the signal to be transmitted after precoding. Also provided in another embodiment of the invention is a device capable of increasing a transmission rate.

Description

technical field [0001] The invention relates to the field of data communication, in particular to a method and device for increasing the line rate. Background technique [0002] Digital Subscriber Line (DSL, Digital Subscriber Line) is a high-speed data transmission technology transmitted on a telephone twisted pair, such as an unshielded twisted pair (UTP, Unshielded Twist Pair). There are multiple DSL lines in the DSL system. Currently, a DSL access multiplexer (DSLAM, Digital Subscriber Line Access Multiplexer) usually provides multiple DSL access for multiple Customer Premises Equipment (CPE). However, due to the principle of electromagnetic induction, crosstalk (Crosstalk) will occur between multiple signals connected to the DSLAM. Such as figure 1 shown. Twisted-pair cables have strong Far-end Crosstalk (FEXT) at high frequencies. In order to eliminate noise caused by crosstalk, for example, Vectored DSL technology can be used to eliminate FEXT on multiple DSL lines...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03
CPCH04L25/03
Inventor 殷慧孙方林
Owner 上海朋邦实业有限公司
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