AI RESEARCH
Physics-Informed Transformer for Multi-Band Channel Frequency Response Reconstruction
arXiv CS.LG
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ArXi:2604.01944v1 Announce Type: cross Wideband channel frequency response (CFR) estimation is challenging in multi-band wireless systems, especially when one or sub-bands are temporarily blocked by co-channel interference. We present a physics-informed complex Transformer that reconstructs the full wideband CFR from such fragmented, partially observed spectrum snapshots. The interference pattern in each sub-band is modeled as an independent two-state discrete-time Marko chain, capturing realistic bursty occupancy behavior.