KSII Transactions on Internet and Information Systems (TIIS)

Korean Society for Internet Information (한국인터넷정보학회)
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Spectrum Usage Forecasting Model for Cognitive Radio Networks

  • Yang, Wei (School of Information and Communication Engineering, Beijing University of Posts and Telecommunications) ;
  • Jing, Xiaojun (School of Information and Communication Engineering, Beijing University of Posts and Telecommunications) ;
  • Huang, Hai (School of Information and Communication Engineering, Beijing University of Posts and Telecommunications)
  • Received : 2017.09.12
  • Accepted : 2017.11.02
  • Published : 2018.04.30
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Abstract

Spectrum reuse has attracted much concern of researchers and scientists, however, the dynamic spectrum access is challenging, since an individual secondary user usually just has limited sensing abilities. One key insight is that spectrum usage forecasting among secondary users, this inspiration enables users to obtain more informed spectrum opportunities. Therefore, spectrum usage forecasting is vital to cognitive radio networks (CRNs). With this insight, a spectrum usage forecasting model for the occurrence of primary users prediction is derived in this paper. The proposed model is based on auto regressive enhanced primary user emergence reasoning (AR-PUER), which combines linear prediction and primary user emergence reasoning. Historical samples are selected to train the spectrum usage forecasting model in order to capture the current distinction pattern of primary users. The proposed scheme does not require the knowledge of signal or of noise power. To verify the performance of proposed spectrum usage forecasting model, we apply it to the data during the past two months, and then compare it with some other sensing techniques. The simulation results demonstrate that the spectrum usage forecasting model is effective and generates the most accurate prediction of primary users occasion in several cases.

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