This experiment demonstrates voltage gains with software-defined radio in indoor environments, suggesting potential for point-to-point applications in cluttered settings.
Time reversal techniques have been investigated for ultrasound and electromagnetic waves. It offers some advantages, particularly in cluttered and inhomogeneous environment, for point-to-point applications. The instrumentation usually employed for electromagnetic time-reversal involves costly vector network analyzers or different interconnected generators and receivers. This article explores the use of a commercial software-defined radio, in frequencies between 700 MHz and 2100 MHz, with indoor tests showing its performance and observed voltage gains for the received pulse.
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Perotoni et al. (2025) studied this question.
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