Inband Full-Duplex Relaying for RADCOM-based Cooperative Driving
2020
We explore the use of RADar based COMmunication (RADCOM) as a complementary communication technology for next-generation Intelligent Transportation Systems (ITS). RADCOM makes use of vehicular radar operating in the 77 GHz mmWave band. Using platooning of cars on the freeway as an example application, which could benefit substantially from mm Wave high bandwidth transmissions with low latencies along the platoon, we propose to combine Full-Duplex Relaying (FDR) with RADCOM. Full-duplex relaying at the 77 GHz band benefits from the directionality of the signal, which leads to reduced Looped Self-Interference (LSI). We developed a real-time simulation model based on GNU Radio to study the mm Wave propagation in platoons. In particular, we investigate the opportunities of inband FDR for RADCOM. Our first results clearly indicate the advantages of the proposed approach in terms of reduced physical layer latency and energy requirements while maintaining optimal channel link rates.
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