Multi-functional Coexistence of Radar-Sensing and Communication Waveforms


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Mert Sahin M., ARSLAN H.

92nd IEEE Vehicular Technology Conference, VTC 2020-Fall, Virtual, Victoria, Canada, 18 - 16 November 2020, vol.2020-November, (Full Text) identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 2020-November
  • Doi Number: 10.1109/vtc2020-fall49728.2020.9348582
  • City: Virtual, Victoria
  • Country: Canada
  • Istanbul Medipol University Affiliated: Yes

Abstract

In this study, a novel transmission scheme is proposed to serve radar-sensing and communication objectives at the same time and allocated bandwidth. The proposed transmitted frame non-orthogonally superimposes two different waveforms, which are frequency modulated continuous-wave (FMCW) for radar-sensing and orthogonal frequency division multiplexing (OFDM) for communication. Also, the receiver scheme that performs channel estimation via radar-sensing functionality without degrading data rate of communication operation is introduced. As numerically evaluated, the proposed system achieves good sensing accuracy even if the signal-to-noise ratio (SNR) is low, and communication performance is only 0.6 dB less at the target bit-error rate (BER) of 1% compared to the assumption of perfect channel state information (CSI) without any pilot overhead over OFDM subcarriers.