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This chapter proposes a signal processing implementation workflow for chipless RFID systems, covering the entire process from backscattered response preprocessing in various domains to feature extraction and decoding post-processing methods. Preprocessing involves a set of algorithms that transform the response between domains to facilitate the decoding process. The chapter explores the performance of several time-frequency transforms, including the short-time Fourier transform (STFT), continuous wavelet transform (CWT), Wigner-Ville distribution (WVD), and the smoothed pseudo-WVD (SPWVD), using measurements from frequency-coded tags under different conditions.

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Chipless RFID Signal Preprocessing

  • 章节

  • 发表日期：

    2025年

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  • Fátima Villa-González,
  • Daniel Valderas,
  • Etienne Perret,
  • Antonio Lázaro,
  • Simone Genovesi,
  • Rahul Bhattacharyya

摘要

This chapter proposes a signal processing implementation workflow for chipless RFID systems, covering the entire process from backscattered response preprocessing in various domains to feature extraction and decoding post-processing methods. Preprocessing involves a set of algorithms that transform the response between domains to facilitate the decoding process. The chapter explores the performance of several time-frequency transforms, including the short-time Fourier transform (STFT), continuous wavelet transform (CWT), Wigner-Ville distribution (WVD), and the smoothed pseudo-WVD (SPWVD), using measurements from frequency-coded tags under different conditions.