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Self-adaptive interference cancellation control device, system and method

A technology for interference cancellation and control devices, applied in transmission systems, radio transmission systems, electrical components, etc., can solve problems such as wireless co-frequency relay equipment not working properly, insufficient isolation of transceiver antennas, self-excitation, etc.

Pending Publication Date: 2020-03-06
福州智程信息科技有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, if the power of the device is too large, or the isolation of the transceiver antenna is not enough, it may cause self-excitation, so that the wireless co-frequency relay device cannot work normally.

Method used

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  • Self-adaptive interference cancellation control device, system and method
  • Self-adaptive interference cancellation control device, system and method
  • Self-adaptive interference cancellation control device, system and method

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Embodiment Construction

[0076] In order to make the present invention more comprehensible, a preferred embodiment is now described in detail with accompanying drawings as follows.

[0077] Such as figure 1As shown, an adaptive interference cancellation control device of the present invention is used in wireless same-frequency relay equipment; the adaptive interference cancellation control device includes an adder / subtractor, an automatic gain control module, and an adaptive filter device, an interference canceller and a delay device;

[0078] One input end of the adder / subtractor is connected with the digital down converter in the wireless co-frequency relay device, and the output end of the adaptive filter is connected with the other end of the adder / subtracter through the interference canceller. The input end is connected, the output end of the described adder / subtractor is connected with the input end of the automatic gain control module, and an output end of the automatic gain control module is ...

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Abstract

The invention provides a self-adaptive interference cancellation control device which is used in wireless same-frequency relay equipment. The self-adaptive interference cancellation control device comprises an adder / subtractor, an automatic gain control module, an adaptive filter, an interference canceller and a delayer. One input end of the adder / subtracter is connected with a digital down converter in the wireless same-frequency relay equipment; the output end of the adaptive filter is connected with the other input end of the adder / subtracter through the interference canceller; the output end of the adder / subtractor is connected with the input end of the automatic gain control module, one output end of the automatic gain control module is connected with the input end of the self-adaptive filter through the delayer, and the other output end of the automatic gain control module is connected with a digital up-converter in the wireless same-frequency relay device. The invention furtherprovides a self-adaptive interference cancellation wireless same-frequency relay system and a self-adaptive interference cancellation control method, and the self-excitation problem of the wireless same-frequency relay equipment can be effectively solved.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to an adaptive interference cancellation control device, system function and method. Background technique [0002] The wireless same-frequency relay equipment is produced to expand the coverage of the existing network. It works between the base station (BTS) and the mobile station (MS). It is the wireless interface part of the signal system. It relays and amplifies the radio frequency signal bidirectionally. , to extend the coverage of the base station signal, in which the wireless signal is transparently transmitted, in fact it is a wireless radio frequency signal enhancement device. Wireless same-frequency relay equipment has been widely used because of its economical and practical features and quick installation. [0003] Wireless co-frequency relay equipment is a kind of radio transmission relay equipment that enhances the signal in the process of wireless communic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/525H04B7/155
CPCH04B1/525H04B7/15507H04B7/15585
Inventor 本杰明.K.许刘聪江
Owner 福州智程信息科技有限公司
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