Experimental Evaluation of a Low-Power Ultra-Wideband Receiver for Spectrum Sensing

Abstract:Walsh-sequence-based receiver architectures offer an alternative approach for the reception and reconstruction of multiple simultaneous RF signals over wide bandwidths. While previous works have focused on the architecture and theoretical operation of Walsh-domain processing, limited experimental results have been reported so far on hardware operation under realistic conditions. This paper presents the experimental evaluation of a Walsh-sequence-based receiver prototype. A measurement campaign was conducted under various signal placement, interference, and receiver configuration scenarios. Reconstructed spectra, Walsh-lane power spectral densities (PSDs), and Error Vector Magnitude (EVM) measurements were used to investigate Walsh-domain signal representation, interference effects, and receiver performance. Finally, dense- spectrum experiments involving up to ten simultaneously active signals demonstrate the potential of the architecture for low power wideband spectrum sensing applications.

Signal Processing (eess.SP); Information Theory (cs.IT); Machine Learning (cs.LG)

arXiv:2609.22134 [eess.SP]

(or arXiv:2609.22134v1 [eess.SP] for this version)

https://doi.org/10.48550/arXiv.2609.22134 Focus to learn more arXiv-issued DOI via DataCite

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