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cs.IT2026
Channel Estimation for OTFS Systems With Overspread Doppler Shifts
Preety Priya, Yi Hong, Emanuele Viterbo
In this paper, we consider an orthogonal time frequency space (OTFS) system in time-varying channels with overspread Doppler shifts, typically found in non-terrestrial multi-satell…
q-fin.PR2026
Corporate Bond Yield Curve Modeling: A Rating-Based Regime-Switching Generalized CIR Approach
Maochun Xu, Yunqi Liang, Yi Hong
Persistent shifts in term-structure dynamics undermine the stability of single-regime models in long samples. We develop an arbitrage-free regime-switching generalized CIR (RS-GCIR…