Embedded Radar Sensing in Communication Waveforms: Algorithms and Trade-off

Joint communication and sensing (JCS) is a promising technology that shares the same waveform for both the functions of communications and sensing, in order to improve the efficiencies of frequency spectrum and power. In this paper, the approach of reusing communication waveforms for sensing is studied. From the viewpoint of frequency domain, the communication signals provide bandwidth for radar ranging; from the viewpoint of time domain, the random information symbols in the communication signal offer timing information via the autocorrelation function. Both cases of single-carrier and multi-carrier communication signals are studied for embedding the sensing function. The trade-off between communication and sensing performances is studied.