Co-sharing waveform design for millimeter-wave radar communication systems

Millimeter-wave (mmWave) radar communication has emerged as an important technique for future wireless systems. However, the interference between the radar signal and communication data is the main issue that should be considered for the joint radar communication system. In this paper, a co-sharing waveform (CSW) is proposed to achieve communication and radar sensing simultaneously. To eliminate the co-interference between the communication and sensing signal, signal splitting and processing methods for communication data demodulation and radar signal processing are given respectively. Simulation results show that the bit error rate (BER) of CSW is close to that of the pure communication waveform. Moreover, the proposed CSW can achieve better performance than the existing waveforms in terms of range and velocity estimation.