Transmit waveform optimization method, metamaterial-aided backscatter sensing system, electronic device, storage medium, and program product

Abstract

This application provides a method for optimizing transmitted waveforms, a system for metamaterial-assisted backscattering sensing, an electronic device, a storage medium, and a program product, relating to the field of communication technology. The method includes: controlling a transmitter in a control system to transmit a transmitted signal to multiple metamaterial sensing tags in the system; acquiring a received signal from a receiver in the system; the received signal includes reflected signals from the multiple metamaterial sensing tags; extracting the resonant frequency of each metamaterial sensing tag based on the received signal; the resonant frequency of each metamaterial sensing tag changing with the environmental state of the metamaterial sensing tag; generating a resonant frequency vector based on the resonant frequencies of the multiple metamaterial sensing tags; optimizing the waveform of the transmitted signal based on an objective function; the objective function is determined based on the mutual information between the resonant frequency vector and the received signal. The optimized transmitted waveform of this application maximizes the carrying of resonant frequency information in the received signal, improving the accuracy of environmental state perception.

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