Radar-Centric ISAC Through Index Modulation: Over-the-air Experimentation and Trade-offs

Temiz M., Peters N. J., Horne C., Ritchie M. A., Masouros C.

2023 IEEE Radar Conference, RadarConf23, Texas, United States Of America, 1 - 05 May 2023, vol.2023-May, (Full Text) identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 2023-May
  • Doi Number: 10.1109/radarconf2351548.2023.10149620
  • City: Texas
  • Country: United States Of America
  • Keywords: index modulation, integrated sensing and communication, radar sensing, wireless communication
  • Middle East Technical University Affiliated: No

Abstract

This study experimentally demonstrates a radar-centric integrated sensing and communication (ISAC) system that exploits the radar transmission parameters as modulation indexes to communicate with the user devices while performing short-range radar sensing. The center frequency, bandwidth, and polarization of the transmitted radar chirps are used as modulation indexes. The simulation results have been verified by real-time over-the-air experimental measurements that have also revealed the trade-off between the radar sensing performance and communication data rate, depending on the radar waveform parameters selected in the ISAC system. The proposed dual-function radar and communication system was shown to reach up to 10 Megabits/s throughput depending on the bandwidth and centre frequency separations and chirp duration.