OFDM-ISAC experiences approximately linear SINR and range-Doppler map degradation with normalized excess delay beyond the CP, but SIC-DFT and SIC-ESPRIT algorithms deliver over 4 dB SINR gain and up to 10x lower RMSE, approaching ideal long-CP performance.
Integrated sensing and communications: Toward dua l-functional wireless networks for 6G and beyond,
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OFDM-ISAC Beyond CP Limit: Performance Analysis and Mitigation Algorithms
OFDM-ISAC experiences approximately linear SINR and range-Doppler map degradation with normalized excess delay beyond the CP, but SIC-DFT and SIC-ESPRIT algorithms deliver over 4 dB SINR gain and up to 10x lower RMSE, approaching ideal long-CP performance.