Signal processing system, chip, circumscribed card, filtering and transmitting/receiving device and method

一种处理方法、处理系统的技术，应用在信号发送和接收装置,多路信号处理系统领域，能够解决信道传输矩阵难获得、慢时变等问题，达到避免更改、好市场适应性、良好串扰抵消效果的效果

Active Publication Date: 2008-06-11
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The disadvantage of the above method is that the channel transmission matrix needs to be predicted, and the channel transmission matrix is ​​difficult to obtain accurately and conveniently. At the same time, the matrix itself has slow time-varying characteristics and will be affected by transmission environmental factors. Certain difficulties, it is necessary to provide more effective crosstalk elimination technology to facilitate the use in various situations

Method used

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  • Signal processing system, chip, circumscribed card, filtering and transmitting/receiving device and method
  • Signal processing system, chip, circumscribed card, filtering and transmitting/receiving device and method
  • Signal processing system, chip, circumscribed card, filtering and transmitting/receiving device and method

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no. 1 approach

[0152] refer to Figure 10 , the present invention also provides a first embodiment of the signal processing chip 100, including:

[0153]The modulation subunit 140 is respectively connected to the input terminal of the transmission signal and the input terminal of the crosstalk source signal, and is used to modulate the components of the signal to be transmitted and the crosstalk source signal of the signal to be transmitted on each subcarrier respectively, and input them to the signal synthesis Unit 120 and filtering unit 110;

[0154] The filtering unit 110 is configured to filter a crosstalk source signal of a signal to be transmitted by using a filtering weight coefficient;

[0155] A signal synthesis unit 120, configured to receive the filtered crosstalk source signal output by the filtering unit 110, and synthesize the signal to be transmitted with the filtered crosstalk source signal;

[0156] The input terminal of the signal to be sent is connected to the signal syn...

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Abstract

The invention provides a multi-channel signal processing system, a multi-channel signal processing chip, a method thereof, a manufacturing method thereof, a filtering device, an external signal processing card and a signal transmitting and receiving device. The multi-channel signal processing system comprises a filtering unit which is arranged on a signal transmitting end and a feedback unit which is arranged on a signal receiving end; the filtering unit comprises a signal synthesis unit and a filter, and the signal synthesis unit inputs a signal waiting for transmission; wherein, the filter is used for filtering a crosstalk source signal of the signal waiting for transmission; the signal synthesis unit is used for synthesizing the signal waiting for transmission and the crosstalk source signal after filtering; the feedback unit feeds back according to the received signal waiting for transmission, wherein, the filter is also used for performing subsequent filtering according to information which is acquired by feedback. The invention can self-adaptively cancel a far end crosstalk signal.

Description

technical field [0001] The invention relates to the field of information processing, in particular to a multi-channel signal processing system, a chip and its method and manufacturing method, a filtering device, an external signal processing card, and a signal sending and receiving device. Background technique [0002] xDSL is a general term for all DSL (Digital Subscriber Line, Digital Subscriber Line) technologies. It is a high-speed data transmission technology transmitted on twisted-pair telephone lines. In addition to DSL for transmission, xDSL for passband transmission uses frequency division multiplexing technology to make xDSL and POTS (Plain Old Telephone Service, traditional telephone service) coexist on the same pair of twisted pairs, where xDSL occupies the high frequency band, and POTS occupies the baseband part below 4KHz . A system that provides access to multiple xDSL signals is called a DSLAM (DSLAccess Multiplexer, DSL access multiplexer). [0003] Teleph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/49H04L25/08
CPCH04B3/30H04B3/32
Inventor 方李明
Owner HUAWEI TECH CO LTD
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