Joint OFDM radar-communications in complex mmWave environments

High data rate millimetre-wave (mmWave)communication systems in dense, multi-user environments face major challenges, including strong interference, wideband noise, latency in mobile platforms, multipath reflections, and complex beamforming and hardware requirements. To tackle these issues, this paper explores a joint radar-communication(JRC) framework designed for highly dynamic scenarios involving mobile and aerial users. The proposed JRC system utilises radar's sensing capabilities to map the communication environment, enabling adaptive beamforming and optimising both phase-scanning and MIMO techniques. A central contribution of this work is the development of adaptive matched noise filters and techniques for scene reconstruction and interference cancellation, using blind source separation and successive interference cancellation. Additionally, the paper introduces radar waveform designs that improve signal orthogonality and separation between radar and communication functions. These advances demonstrate the potential of JRC systems for next-generation UAV communications and dense mmWave networks in fast changing, complex environments