Spectrum Efficient Anti-jamming for OTFS Systems

Numerous anti-jamming techniques are available for wireless communication systems in the literature. However, no work offers a spectrum-efficient anti-jamming technique for orthogonal time frequency space (OTFS) systems under delay Doppler domain jamming attacks, despite it being the most promising waveform for future wireless communication. In this work, we propose two novel and robust anti-jammers based on the maximum correntropy criterion (MCC) and maximum Versoria criterion (MVC). The proposed anti-jamming receivers can withstand most practical jammers, such as shot jammers, chirp jammers, and others. This is because the MCC and MVC-based cost functions are robust under impulsive interference (jamming signals are also high-power impulses that interfere with the intended signals). The theoretical mean deviation of error is computed for proposed anti-jammers to demonstrate their ability to withstand the impacts of jamming. The bit-error rates of the proposed anti-jamming detectors are simulated and compared with the existing detectors for OTFS systems.