Beamspace-based Sensing in Dynamic Joint Communication and Sensing Systems
Dual-function radar communication (DFRC) systems incorporate both radar and communication functions by sharing spectrum, hardware and RF signal processing chains. Future technologies, such as 6G, are envisioned to support multiple communication platforms along with radar sensing, thus leading to high dynamism and competition for the available resources. In such settings, whenever communication takes precedence, a likely scenario is dynamically changing RF chain and antenna availability for sensing. This necessitates real-time beam redesign to cover the field-of-view (FOV), solving which is intractable via computationally expensive optimization approaches. We propose that classic windowing techniques are still relevant and much more practical than optimization methods in such dynamic scenarios. Specifically, parametrized windows can be used in a strategic way to adapt to varying resource availability while sustaining sensing performance.
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