This paper investigates an intelligent reflecting surface (IRS) assisted integrated sensing and communication (ISAC) with high-mobility systems, where the orthogonal time frequency space (OTFS) modulation is employed to leverage the Delay- Doppler (DD) spread. We propose a subspace-based beamforming design algorithm, which optimizes the phase shifts at the IRS and the combining vector at the base station (BS) to enhance the communication performance subject to the constraint on the sensing accuracy. Moreover, we derived closed-form solutions for the optimization problems. Numerical results affirm the effectiveness of our proposed beamforming design algorithm in high-mobility scenarios.
Beamforming Design for IRS-assisted High-mobility ISAC Systems
2024-06-24
717250 byte
Conference paper
Electronic Resource
English
DOAJ | 2025
|DataCite | 2024
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