Unlock instant, AI-driven research and patent intelligence for your innovation.

Filtering method and apparatus thereof, and crosstalk counteracting method and system thereof

A technology of crosstalk cancellation and filtering parameters, applied in the direction of reducing crosstalk, correct operation test, impedance network, etc., can solve problems such as large amount of calculation, affecting system performance and achievability, and achieve accurate crosstalk cancellation and reduce computational complexity. and improve system performance

Inactive Publication Date: 2012-08-29
冯井丽
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In the above-mentioned prior art, when the value of N increases, the overall calculation amount will increase by a square factor, so the filtering method of the prior art has too much calculation amount, which affects system performance and realizability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Filtering method and apparatus thereof, and crosstalk counteracting method and system thereof
  • Filtering method and apparatus thereof, and crosstalk counteracting method and system thereof
  • Filtering method and apparatus thereof, and crosstalk counteracting method and system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] Embodiments of the present invention provide a filtering method and device thereof, a crosstalk canceling method and a system thereof, which are used to reduce computational complexity and improve system performance.

[0032] Embodiments of the present invention can be applied to far-end crosstalk cancellation technology. In the following embodiments, counteracting far-end crosstalk is taken as an example. In addition, in the following embodiments, FFT is used as an example of time-frequency transformation, and IFFT is used as an example. As an example of frequency-time transformation, in addition, in the following embodiments, DSP is used as an example of a digital signal processing device, and it can be understood that other devices for processing digital signals can also be used.

[0033] see image 3 , the embodiment of the filtering method in the embodiment of the present invention includes:

[0034] 301. The filter device receives the input time-frequency signal;...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a filtering method and a device thereof, a crosstalk interference cancellation method and a system thereof, which is used to reduce computational complexity in the crosstalk interference cancellation process. The filtering method comprises steps of deserializing input time domain signals, converting the time domain signals which are deserialized to frequency domain signalsvia a time-frequency conversion, multiplying each frequency domain signal by a relative filtering parameter to obtain a frequency domain filtering result, converting the frequency domain filtering results to the time domain filtering results via frequency-time conversion, and then obtaining crosstalk interference signals via parallel-serial conversion of the time domain filtering results. The invention relatively provides a filter device, a crosstalk interference cancellation method and a crosstalk interference cancellation system. The filtering method and a device thereof and a crosstalk interference cancellation method and a system thereof can effectively reduce computational complexity in the crosstalk interference cancellation process and increase system performance.

Description

technical field [0001] The present invention relates to the communication field, in particular to a filtering method and device thereof, a crosstalk canceling method and a system thereof. Background technique [0002] Digital Subscriber Line (DSL, Digital Subscriber Line) technology is a high-speed transmission technology for data transmission through telephone twisted pair, that is, UTP, Unshielded Twist Pair, including Asymmetric Digital Subscriber Line (ADSL, Asymmetrical Digital Subscriber Line), Very High-speed Digital Subscriber Line (VDSL, Very-high-bit-rate Digital Subscriber Line), Subscriber Digital Line (IDSL, ISDN Digital Subscriber Line) based on Integrated Services Digital Network (ISDN, Integrated Services Digital Network) ) and Single-pair High-bit-rate Digital Subscriber Line (SHDSL, Single-pair High-bit-rate Digital Subscriber Line), etc. [0003] As frequency bands used by various digital subscriber line technologies (xDSL) increase, crosstalk, especially...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/24H04B3/32H03H17/00
Inventor 方李明李程
Owner 冯井丽