Anti-Jamming Design for Sensing-Assisted Reliable Orthogonal Time Frequency Space Communications

Sensing-assisted communication, as an important implementation of integrated sensing and communication (ISAC) systems, can enhance communication performance by using the parameters obtained in the radar sensing phase. However, when faced with jamming, the aforementioned vision will be difficult to achieve. This letter studies the performance of the orthogonal time frequency space (OTFS) modulation based sensing-assisted communications in the directional jamming environment. Specifically, anti-jamming schemes are proposed for both the radar sensing and communication phases. In addition, time domain signal precoding is adopted to facilitate symbol detection in communication phase. Simulation results are provided to show the effectiveness of the proposed schemes.