Narrowband interference detection method based on distortion power removal and communication device thereof

A technology of narrowband interference and distorted power, which is applied in the field of narrowband interference detection method and communication device based on distorted power removal, can solve the problems of difficult control of hardware real-time processing, unfixed processing delay, low detection reliability, etc. Excellent performance, fast algorithm convergence, and superior detection performance

Active Publication Date: 2020-06-09
磐基技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The disadvantage of the above conventional method is that the reliability of each detection is low, and the processing delay through

Method used

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  • Narrowband interference detection method based on distortion power removal and communication device thereof
  • Narrowband interference detection method based on distortion power removal and communication device thereof
  • Narrowband interference detection method based on distortion power removal and communication device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0077] The method for detecting narrowband interference in this embodiment is performed during the idle period of data packet transmission, and if the data packet transmission is detected, the detection method is stopped.

[0078] There are 128 subcarriers on the transmission bandwidth, respectively: P 0 ,P 1 …P i …P 126 ,P 127 ;Select the first 10 subcarriers, and get the subcarrier P with the smallest noise power 4 .

[0079] The average power set is then constructed, and P 4 as the first subcarrier of the set.

[0080] From subcarrier P 5 Start traversing all subcarriers to detect whether subsequent subcarriers can be added to the average power set. The specific process is as follows:

[0081] Calculate the subcarrier P 5 The sum of the powers of the previous 2 subcarriers gives V 5-2 , calculate the subcarrier P 5 After that the sum of the powers of the 2 subcarriers gives V 5+2 ; where P 5 The previous 2 subcarriers include P 3 ,P 4 , P 5 The next 2 subcar...

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Abstract

The invention discloses a narrowband interference detection method based on distortion power removal and a communication device thereof. Narrowband interference detection is carried out by using idletime for transmitting two data packets. The method comprises the steps of firstly, obtaining a subcarrier Pmin with the minimum noise power and the position of the subcarrier Pmin; calculating an average noise power set; and finally, completing two detection processes based on the average noise power set, and judging whether the subcarrier has narrowband interference or not. The method has the advantages of fixed operation complexity and optimal performance, can be applied to application specific circuits (ASIC) and digital signal processing (DSP), can work together with high-sensitivity packet detection, and provides reliable communication on noisy channels.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a narrowband interference detection method based on distortion power removal and a communication device thereof. Background technique [0002] Communication equipment and systems live in a complex electromagnetic environment. With the increasing density of electronic equipment, the occupied electromagnetic spectrum is getting wider and wider, the amount of information transmitted is increasing, and the electromagnetic interference is becoming more and more serious. . [0003] From the spectral width of electromagnetic interference signals, electromagnetic interference can be divided into broadband interference sources and narrow-band interference sources. In wireless and wired communication systems, frequency bands that are much smaller than the system bandwidth are called narrowband interference sources. Among these interferences, high-power narrow-band inter...

Claims

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Application Information

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IPC IPC(8): H04L12/26H04L27/26
CPCH04L27/2688H04L27/2691H04L43/08
Inventor 胡小菲傅鑫陈宁周博
Owner 磐基技术有限公司
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