An OFDM-ISAC Scheme Based on Zadoff-Chu Sequence for 5G NR Base-Station

This paper proposes an integrated sensing and communication (ISAC) waveform design using the Zadoff-Chu (ZC) sequence based on orthogonal frequency division multiplexing (OFDM). The correlation property of the ZC sequence is utilized to achieve the target range (root mean square error (RMSE) can reach approximately 0.3m) and velocity (RMSE can reach approximately 0.2m/s) detection. This proposal also implements a fixed-angle beam-scanning method to obtain the targets' 3D positions. This scheme is simulated with different bands and numerologies to verify its versatility.