Self-adapting filter, filtration method and repeater

A technology of adaptive filter and repeater, applied in the field of communication

Inactive Publication Date: 2012-05-23
SHENZHEN WINHAP COMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the embodiment of the present invention is to provide an adaptive filter, aiming at solving the problem that the adaptive tap coefficient update method provided by the prior art cannot accurately reflect the actual signal The power changes, and the resources consumed in the tap coefficient update process are too large, and the hardware delay is too long

Method used

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  • Self-adapting filter, filtration method and repeater
  • Self-adapting filter, filtration method and repeater
  • Self-adapting filter, filtration method and repeater

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Embodiment Construction

[0030] figure 1 is a structural block diagram of an adaptive filter provided by an embodiment of the present invention;

[0031] figure 2 is a structural block diagram of an error output signal generation module provided by an embodiment of the present invention;

[0032] image 3 is a structural block diagram of a tap coefficient acquisition module provided by an embodiment of the present invention;

[0033] Figure 4 It is an implementation flowchart of the method for updating tap coefficients provided by the embodiment of the present invention;

[0034] Figure 5 It is an implementation flowchart of performing delay decomposition on the input signal u(n) of the forwarding antenna and generating an error output signal e(n) provided by the embodiment of the present invention;

[0035] Figure 6 According to the error output signal e(n) provided by the embodiment of the present invention, the tap coefficient at the next moment is obtained implementation flow chart. ...

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Abstract

The invention is applicable to the technical field of communication, and provides a self-adapting filter, a filtration method and a repeater, wherein the self-adapting filter comprises a filtration module and a tap coefficient updating module, the filtration module is used for the delay decomposing of an input signal u (n) of a transmission antenna and generating a difference output signal e (n);and the tap coefficient updating module is used for obtaining the tap coefficient of the next moment according to the difference output signal e (n) and adjusting the tap weight of an updating filtration device through the tap coefficient. In the embodiment of the invention, the self-adapting filter comprises the filtration module and the tap coefficient updating module, wherein the filtration module is used for the delay decomposing of the input signal u (n) of the transmission antenna and generating the difference output signal e (n), the tap coefficient updating module is used for obtaining the tap coefficient of the next moment according to the difference output signal e (n) and adjusting the tap weight of the updating filtration device through the tap coefficient, and thereby the invention solves the problem that when the tap coefficient of the filtration device is updated, the complicated complex multiplication operation consumes a great quantity of hardware resources and the delay time of the hardware is too long.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to an adaptive filter, a filtering method and a repeater. Background technique [0002] The existing adaptive tap coefficient update method is based on calculating the power ||u(n)|| of the input signal u(n) 2 , due to the power ||u(n)|| 2 The size of is limited by the order of the adaptive filter such that ||u(n)|| 2 In the actual application process, the actual signal power change cannot be accurately reflected, and the resources consumed in the process of updating the tap coefficients are too large, and the hardware delay is too long. Contents of the invention [0003] The purpose of the embodiments of the present invention is to provide an adaptive filter, aiming at solving the problem that the adaptive tap coefficient update method provided by the prior art cannot accurately reflect the power change of the actual signal, and the power consumed in the ta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03H21/00H03H17/02
Inventor 杨青山
Owner SHENZHEN WINHAP COMM
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