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Frequency spectrum space channel clustering method

A technology of spatial channel and clustering method, which is applied to the field of clustering of channels in spectrum data, can solve the problems of unreasonable and reliable clustering effect, non-clustered channel points cannot be clustered, etc., and achieves reasonable and reliable calculation method, The clustering effect is excellent and the calculation method is more effective

Active Publication Date: 2019-12-24
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that there are technical problems in the prior art that the clustering effect is unreasonable and reliable, the clustering time efficiency, and the non-clustering channel points cannot be clustered

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  • Frequency spectrum space channel clustering method
  • Frequency spectrum space channel clustering method
  • Frequency spectrum space channel clustering method

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Embodiment 1

[0039] This embodiment provides an improved spectral space channel clustering method based on density and frequent pattern mining, and its specific implementation steps are as follows:

[0040] S1. Data preprocessing: the spectrum data is collected by the spectrum receiver, and then the spectrum data of all channels are processed into a sequence of 0, 1, 0 means the channel is idle, and 1 means the channel is occupied.

[0041] S2. Calculate the similarity between channels: calculate the similarity between information by using an improved channel similarity calculation formula that introduces a time factor.

[0042] S3. Calculating the distance between the channels: the similarity value between the channels is obtained through S2, and the distance between the channels is calculated by using the information entropy formula.

[0043] S4. Clustering the channels: using the results obtained in S3, the channels are first clustered through an improved DBSCAN-based channel clustering...

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Abstract

The invention relates to a frequency spectrum space channel clustering method. The technical problems that the clustering effect is unreasonable and reliable, the clustering time efficiency is high, and non-clustering channel points cannot be clustered are solved. Similarity is calculated by using an improved channel similarity calculation method; a clustering channel is used as a representative channel; the method is used for carrying out secondary clustering on non-clustering points by using a frequent pattern mining algorithm based on a representative channel occupation state sequence. According to the technical scheme, a new channel of secondary clustering and a channel of primary clustering are integrated to serve as a final clustering result to be output, the problem is well solved,and the method can be used for spectrum sensing, spectrum situation analysis, spectrum intelligent management and cognitive radio analysis processes.

Description

technical field [0001] The invention relates to the field of channel clustering in spectrum data, in particular to a clustering method for spectrum space channels. Background technique [0002] In recent years, with the rapid development of wireless technology and services, the wireless spectrum has become more and more crowded, and the spectrum resources have become increasingly scarce. The hidden dangers of radio order and spectrum security have become more and more serious; it can be seen that the shortage of spectrum resources and There is a serious contradiction between the extremely low utilization of spectrum resources, so scholars at home and abroad are actively working on exploring new spectrum resource allocation mechanisms. Some scholars have proposed a dynamic spectrum allocation mechanism, which is different from the traditional fixed spectrum allocation mechanism. The difference is that for the frequency band allocated for licensed users, when it is in an idle ...

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Application Information

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IPC IPC(8): G06K9/62
CPCG06F18/23
Inventor 张可许达汪小芬
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA