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Robust ISAC Signal Processing on Unlicensed Spectrum Bands

The integrated sensing and communication (ISAC) technology is regarded as a potential key technology in the future mobile communication systems. In order to make full use of spectrum resources, mobile communication systems work not only in continuous frequency band but also in non-continuous frequency band. The orthogonal frequency division multiplex (OFDM) signal working in non-continuous frequency band is called non-continuous OFDM (NC-OFDM). In order to enhance the anti-noise performance of ISAC signal based on NC-OFDM, an improved signal processing algorithm is proposed according to the communication signaling. Finally, the feasibility of the proposed algorithm is verified by simulation. Compared with traditional signal processing algorithms, the proposed algorithm has better anti-noise performance in non-continuous spectrum.