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Spectrum entropy prediction method and system

A prediction method and spectrum entropy technology, applied in transmission systems, digital transmission systems, electrical components, etc., can solve problems such as transmission delay, data packet loss, impact on communication quality, good performance, etc., achieve high prediction accuracy and improve prediction accuracy , increase the effect of feature selection

Active Publication Date: 2018-10-02
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

Although this helps unlicensed users to find free spectrum in advance, if the idle frequency band is switched too frequently, it will cause serious transmission delay and data packet loss for unlicensed users during communication, which will affect communication quality
It can be seen that only predicting the idle frequency band does not guarantee the good quality of unlicensed communication

Method used

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  • Spectrum entropy prediction method and system
  • Spectrum entropy prediction method and system
  • Spectrum entropy prediction method and system

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Embodiment Construction

[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] refer to figure 1 As shown, it is a flow chart of a preferred embodiment of the spectrum entropy prediction method of the present invention.

[0038] Step S1, using autocorrelation function analysis to obtain spectral entropy data features. Wherein, the spectrum entropy data is a discrete vector sequence x(n). in particular:

[0039] For the above discrete vector sequence x(n), its autocorrelation function r xx (τ) is:

[0040]

[0041] Wherein, n=0, 1, 2, . . . , N-1.

[0042] figure 2 It is an autocorrelation diagram of a channel in a randomly selected 950MHz frequency band using an autocorrelation function. According to the autocorrelation diagram of the spectrum entropy, it can be seen that the spectrum entropy has a strong autocorrelation, and it is found that the autocorrelation value reaches a local maximum ev...

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Abstract

The invention relates to a spectrum entropy prediction method, which comprises the steps of analyzing by using an autocorrelation function to obtain spectrum entropy data features; selecting a main training feature set X' from spectrum entropy data according to the obtained spectrum entropy data features; performing feature importance ranking on the main training feature set X' to obtain a featureset S; performing feature dimension reduction on the feature set S to obtain a best feature set Sbest; constructing a linear regression function according to the best feature set Sbest and a prediction value Y, and obtaining a predictor; screening feature vectors to be predicted, and inputting the screened feature vector to be predicted into the predictor to obtain a prediction result. The invention further relates to a spectrum entropy prediction system. The spectrum entropy prediction method and system can predict a frequency band with stable spectrum utilization and are high in predictionaccuracy.

Description

technical field [0001] The invention relates to a spectrum entropy prediction method and system. Background technique [0002] With the vigorous development of wireless communication, wireless communication and its application have penetrated into every aspect of people's life. Especially in recent years, with smartphones as the center, emerging technologies and industries such as mobile Internet, vehicle network, wearable devices, smart home and Internet of Things have begun to explode, resulting in a large number of different forms of wireless products and services. Each wireless product or service needs to use certain spectrum resources to complete communication. However, most of these communication frequency bands are concentrated in unlicensed frequency bands, causing some unlicensed frequency bands to become saturated or even overloaded. Therefore, it is necessary to expand new frequency bands. The need is imminent. [0003] People's demand for wireless spectrum is i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04W24/06
CPCH04L41/147H04W24/06
Inventor 黄晓霞常杰
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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