A three-channel adaptive co-location broadband interference suppression method and system

A broadband interference and adaptive technology, applied in transmission systems, electrical components, etc., can solve problems such as the decline of broadband interference suppression capability

Active Publication Date: 2022-02-15
HUBEI UNIV OF TECH
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Problems solved by technology

[0003] The present invention mainly aims at the problem that the interference suppression performance of the current self-adaptive co-location interference suppression system is significantly reduced due to delay matching accuracy and antenna swing scene, especially the suppression ability of broadband interference, and proposes a three-channel structure broadband robust Adaptive co-location interference suppression method and system

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  • A three-channel adaptive co-location broadband interference suppression method and system
  • A three-channel adaptive co-location broadband interference suppression method and system
  • A three-channel adaptive co-location broadband interference suppression method and system

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Embodiment

[0054] Basic principle of the present invention is as follows:

[0055] Assume that the reference signal passing through delayer I, delayer II and delayer III is

[0056] (1)

[0057] Suppose the interfering signal is

[0058] (2)

[0059] E si and E Ii Indicates the first in the reference signal and the interference signal i The magnitude of a frequency component, ω i Indicates the first i The angular frequency of frequency components, , , Indicates the delay time of delay I, delay II and delay III, is the delay amount of delay II and delay III relative to delay I, Indicates the time delay of the interference signal relative to the reference signal, n Indicates the number of frequencies in the interfering signal.

[0060] The residual signal of interference cancellation is

[0061] (3)

[0062] in, X I ( t ) for receiving interference signals, is the weighted amount, is the signal after delay processing, Indicates the interference can...

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Abstract

The present invention relates to a three-channel adaptive co-location broadband interference suppression method and system, which mainly includes two couplers and three delayers; the coupler I is used to couple the interference signal from the transmitting antenna as a copy for the adaptive interference suppression system Reconstruct the received interference signal; delayer I, delayer II and delayer III are used to delay the interference extraction signal and generate a reference signal; the electric adjustable attenuator adjusts the amplitude of the reference signal; the synthesizer converts the amplitude The combination of the adjusted signals generates an interference reconstruction signal for canceling the received interference signal; the coupler II cancels the interference reconstruction signal and the received interference signal, and sends the canceled residual signal to the correlator; the correlator uses It is used to carry out a correlation operation on the reference signal and the cancellation residual signal, and use the operation result to control the attenuation of the electrically adjustable attenuator. The system can significantly improve the delay-limited matching accuracy and the broadband interference suppression performance under large matching errors.

Description

technical field [0001] The invention relates to the technical field of electromagnetic compatibility, in particular to a three-channel adaptive co-location broadband interference suppression method and system suitable for co-location interference suppression of co-location multi-antennas. Background technique [0002] Co-location communication platforms are often installed with a large number of antennas, and due to limited space, the isolation between antennas is limited. When a high-power transmitter and a broadband receiver work at the same time, it is very easy to cause the front end of the receiver to be saturated and desensitized, or even damaged, so that useful signals cannot be received normally. The adaptive co-location interference suppression system can better offset the co-location interference and effectively protect the normal operation of the receiver. Traditional adaptive co-location interference suppression systems usually use a simple method of increasing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/10
CPCH04B1/1027H04B1/10
Inventor 蒋云昊李明阳丁稳房袁雷徐岸非赵楠武明虎
Owner HUBEI UNIV OF TECH
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