SR-TTA: Spatial-Redundancy Test-Time Adaptation for Interference-Robust Respiration Sensing
The system recovers breathing signals from complex radio channel data, even when strong in-band motion interference occurs. It uses Spatial-Redundancy Test-Time Adaptation (SR-TTA) to refine learned beamforming weights by maximizing consistency across random antenna subsets under an out-of-band spectral veto. This label-free method achieves high accuracy and robustness against interference.