Rydberg communication antennas with self-decoupling for dynamic radar interference based on heterodyne technology

Le résumé fourni par la source

The Rydberg atomic communication antenna exhibits exceptional properties superior to traditional antennas. The use of heterodyne technology further establishes a foundation for high-precision digital communication. However, current signal solvers limit its application in integrated radar-communication systems. To address this, we propose a multi-parameter mapping model between Rydberg heterodyne communication symbols and the receiver signals under radar interference. Based on this model, we introduce an adaptive signal-to-interference ratio (SIR)-based hybrid (ASIRH) solver for adaptive decoupling in the presence of wide power range radar interference, using the established Rydberg heterodyne small-sample dataset to update the solver parameters. We employ a Cs Rydberg atomic receiver to implement a single-channel 4-state frequency-shift keying digital communication protocol. The ASIRH model's solving capability is validated within the SIR range of −20 to 28 dB, demonstrating performance with an symbol error rate of less than 3.97% under communication conditions with a data rate of 80 kSym/s and a carrier amplitude of 50μV/cm. This work paves the way for the application of Rydberg communication in complex electromagnetic environments with time-varying radar interference.

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