Research on Integrated Sensing and Communications Based on OCDM

Integrated sensing and communications (ISAC) technology is an important way to solve the shortage of spectrum resources. Aiming at the problem of orthogonal frequency division multiplexing (OFDM) signals to be susceptible to the Doppler shift generated, which leads to severe degradation of the ISAC system performance based on OFDM, this paper proposed a new ISAC system based on orthogonal chirp division multiplexing (OCDM) signals. According to this system, not only we can implement the detection of moving objects accurately with OCDM signals, but also we obtain a better range resolution and a lower bit error rate (BER) under multipath channels.