Research on Pattern Design of Integrated Sensing and Communication Reference Signal in 6G

Integrated sensing and communication (ISAC), as an emerging technology, has the ability to further extend the potential application scenarios of 5G, and is considered as one of the 6G candidate technologies in recent years. In this paper, we investigate the pattern design of ISAC reference signal based on 5G physical layer protocols. Specifically, the effects of the time-frequency domain density and uniformity on the distance-velocity estimation are analysed. On this basis, an accuracy improvement scheme based on zero padding is proposed and validated in a radar simulator test environment. The relationship between signal-to-noise ratio (SNR), computational complexity and estimation accuracy is then demonstrated. Finally, some conclusions are drawn for future pattern design of ISAC.