In the context of the 3.5 GHz Citizens Broadband Radio Service (CBRS) band, accurate prediction of path loss is critical to mitigate potential interference risks for incumbent users from lower-tier users [1]. The current CBRS standards, as stipulated by the Wireless Innovation Forum, rely on the Longley- Rice model, an irregular terrain model (ITM), for path loss estimation [2]. However, this model lacks the incorporation of clutter data, leading to an underestimation of path loss. This study proposes an innovative approach that integrates deep learning (DL) techniques with model-assisted methodologies leveraging satellite imagery to enhance the accuracy of path loss predictions [3, 4]. Through numerical analysis, the effectiveness of this proposed method is demonstrated, achieving a root mean square error (RMSE) of 4.23 dB [5]. This performance surpasses that of the Longley-Rice model and various tuned or adapted propagation models. The integration of DL and satellite imagery proves to be a promising avenue for advancing path loss prediction capabilities in the 3.5 GHz CBRS spectrum range.

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Applying Deep Learning Techniques for Predicting Path Loss in the 3.5 GHz Citizens Broadband Radio Service (CBRS) Spectrum

  • Xueqi Yuan,
  • Yan Yang,
  • Yanfen Li

摘要

In the context of the 3.5 GHz Citizens Broadband Radio Service (CBRS) band, accurate prediction of path loss is critical to mitigate potential interference risks for incumbent users from lower-tier users [1]. The current CBRS standards, as stipulated by the Wireless Innovation Forum, rely on the Longley- Rice model, an irregular terrain model (ITM), for path loss estimation [2]. However, this model lacks the incorporation of clutter data, leading to an underestimation of path loss. This study proposes an innovative approach that integrates deep learning (DL) techniques with model-assisted methodologies leveraging satellite imagery to enhance the accuracy of path loss predictions [3, 4]. Through numerical analysis, the effectiveness of this proposed method is demonstrated, achieving a root mean square error (RMSE) of 4.23 dB [5]. This performance surpasses that of the Longley-Rice model and various tuned or adapted propagation models. The integration of DL and satellite imagery proves to be a promising avenue for advancing path loss prediction capabilities in the 3.5 GHz CBRS spectrum range.