Harmonic interference elimination method and device and receiving equipment

A technology for harmonic interference and signal reception, applied in electrical components, wireless communications, etc., can solve problems such as incompatibility, and achieve the effect of improving accuracy, eliminating harmonic interference, and improving receiving performance

Pending Publication Date: 2021-04-16
上海擎昆信息科技有限公司
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  • Application Information

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Problems solved by technology

[0006] However, if the harmonic frequency point is a harmonic of an unknown frequency, or the harmonic frequency point changes dynamically, the above method is not suitable, so it is necessary to propose a harmonic interference frequency point that is suitable for unknown or changing harmonic interference frequency points. Wave Interference Elimination Method

Method used

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  • Harmonic interference elimination method and device and receiving equipment
  • Harmonic interference elimination method and device and receiving equipment
  • Harmonic interference elimination method and device and receiving equipment

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Embodiment Construction

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other accompanying drawings based on these drawings and obtain other implementations.

[0035] In order to make the drawing concise, each drawing only schematically shows the parts related to the present invention, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, only one of the components having the same structure or function is schematically drawn or only one of them is marked. Herein, "a" not only means "only one", but also means "more than one".

[0036] An embodime...

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Abstract

The invention provides a harmonic interference elimination method and device and receiving equipment, and the method comprises the steps: carrying out the first receiving processing of a received signal, and obtaining an original signal estimation; reconstructing the original signal estimation; obtaining a noise estimation signal according to the received signal and the reconstructed signal; performing frequency domain analysis on the noise estimation signal to obtain a harmonic interference frequency point; setting the notch frequency of a notch filter according to the harmonic interference frequency point, and filtering the received signal by using the notch filter; and receiving the filtered signal for the second time. The method and the device can adaptively detect the harmonic interference frequency point, track the change of the harmonic interference frequency point, and improve the harmonic interference elimination capability of receiving equipment.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method and device for eliminating harmonic interference, and receiving equipment. Background technique [0002] In a wireless communication system, interference signals, such as harmonic interference, often appear in the signals received by the receiver. The interference signals lead to deterioration of the signal-to-noise ratio of the useful signal at the corresponding frequency point, thereby seriously affecting the receiving performance. [0003] Harmonic frequency points in harmonic interference may come from the receiver circuit itself, or from external interference. For example, the harmonic interference of the radio frequency (RF, Radio Frequency) crystal oscillator, when the harmonic component of the crystal oscillator is coupled to the RF high-frequency input port, and then passes through the mixer, it becomes the in-band interference of the received signal. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02
Inventor 谭定富是元吉唐兵武传国
Owner 上海擎昆信息科技有限公司
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