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A channel state detection method and device

A channel state and channel technology, applied in the field of communication, can solve the problem of low accuracy of channel state detection, achieve the effect of eliminating the uncertainty of statistical information, reducing false alarm detection, and improving accuracy

Active Publication Date: 2020-11-13
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +4
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the existing defect of low channel state detection accuracy under complex electromagnetic pulse noise

Method used

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  • A channel state detection method and device
  • A channel state detection method and device
  • A channel state detection method and device

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0053] This embodiment provides a channel state detection method, such as figure 1 shown, including:

[0054] S1: Obtain the system observation value in the current detection period, the system observation value includes the user signal energy or impulse noise energy or background noise energy or the user signal energy, the impulse noise energy, and the background noise energy occupying the channel The energy sum of at least two of them.

[0055] S2: Calculate the channel estimation value and impulse noise estimation value of the current detection period according to the system observation value and prior information, the prior information is the system observation value of the previous period or the system estimation value of the previous N periods , where N is greater than or equal to 1.

[0056] Specifically, the method obtains the system observation value in the first detection period, and the system observation value will be used as the prior information of the second d...

Embodiment 2

[0139] This embodiment provides a channel state detection device, such as Figure 5 As shown, it includes an acquisition unit 10 , a calculation unit 20 and a channel state determination unit 30 .

[0140] The acquisition unit 10 is configured to acquire system observations in the current detection period, the system observations include user signal energy or impulse noise energy or background noise energy or the user signal energy, the impulse noise energy, the The energy sum of at least two of the background noise energies;

[0141] A calculation unit 20, configured to calculate the channel estimation value and the impulse noise estimation value of the current detection period according to the system observation value and prior information, the prior information being the system observation value of the previous period or the previous N periods The systematic estimate of , where N is greater than or equal to 1;

[0142] A channel state determining unit 30, configured to de...

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Abstract

The invention provides a channel state detecting method and device. The channel state detecting method comprises the steps of obtaining a system observation value within a current detection period; calculating a channel estimation value and a pulse noise estimation value of the current detection period based on the system observation value and prior information; and determining the channel state in the current detection period based on the channel estimation value and the pulse noise estimation value. As the pulse noise is estimated in a wireless electromagnetic environment with random pulse noise, indeterminacy of statistic information in a channel state detecting process is removed efficiently, false-alarm detection caused by pulse energy is reduced to the maximum limit, and the accuracy of channel state detection in the presence of complex electromagnetic pulse noise is improved obviously.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a channel state detection method and device. Background technique [0002] With the help of advanced wireless communication and automatic control technology, smart grid technology provides a transformative implementation solution for real-time supervision and abnormal handling of substation equipment in complex electromagnetic environments, ensuring the safety and normal operation of wireless substations. However, in a complex electromagnetic environment, its noise is closely related to interference and the operation of substation equipment, and it no longer obeys the Gaussian statistical distribution usually set up in cellular wireless communication; taking impulse noise or interference as an example, it presents in time There is a certain sparsity, and the amplitude energy is usually far greater than the useful signal, which makes it difficult for traditional wireless co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/382H04W24/08H04W16/14
CPCH04B17/382H04W16/14H04W24/08Y02D30/70
Inventor 安春燕陆阳李建岐刘伟麟李斌陶艺文赵成林章扬刘文亮林树
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD