Deep Stacked Autoencoder Based Long-Term Spectrum Prediction Using Real-World Data

Spectrum prediction is challenging due to its multi-dimension, complex inherent dependency, and heterogeneity among the spectrum data. In this paper, we first propose a stacked autoencoder (SAE) and bi-directional long short-term memory (Bi-LSTM) based spectrum prediction method (SAEL-SP). Specifica...

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Bibliographic Details
Published in:IEEE transactions on cognitive communications and networking Vol. 9; no. 3; p. 1
Main Authors: Pan, Guangliang, Wu, Qihui, Ding, Guoru, Wang, Wei, Li, Jie, Xu, Fuyuan, Zhou, Bo
Format: Journal Article
Language:English
Published: Piscataway IEEE 01.06.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Autoregressive processes
Data models
deep learning
Feature extraction
Frequency measurement
Heterogeneity
Hidden Markov models
Predictive models
Spatial data
Spectrum prediction
stacked autoencoder
temporal-spectral-spatial correlations
Time-frequency analysis
ISSN:2332-7731, 2332-7731
Online Access:Get full text
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Summary:Spectrum prediction is challenging due to its multi-dimension, complex inherent dependency, and heterogeneity among the spectrum data. In this paper, we first propose a stacked autoencoder (SAE) and bi-directional long short-term memory (Bi-LSTM) based spectrum prediction method (SAEL-SP). Specifically, a SAE is designed to extract the hidden features (semantic coding) of spectrum data in an unsupervised manner. Then, the output of SAE is connected to a predictor (Bi-LSTM), which is used for long-term prediction by learning hidden features. The main advantage of SAEL-SP is that the underlying features of spectrum data can be retained automatically, layer by layer, rather than designing them manually. To further improve the prediction accuracy of SAEL-SP and achieve a wider bandwidth prediction, we propose a SAE-based spectrum prediction method using temporal-spectral-spatial features of data (SAE-TSS). Different from SAEL-SP, the input of SAE-TSS is the image format. SAE-TSS achieves higher prediction accuracy than SAEL-SP using the features extracted from time, frequency, and space dimensions. We use a real-world spectrum dataset to validate the effectiveness of two prediction frameworks. Experiment results show that both SAEL-SP and SAE-TSS outperform existing spectrum prediction approaches.
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ISSN:2332-7731
2332-7731
DOI:10.1109/TCCN.2023.3254524