Integrated Sensing, Communication, and Computation Over-the-Air in OFDM Systems

This work is concerned with integrated sensing, communication, and computation (ISCC) in uplink orthogonal frequency division multiplexing (OFDM) systems, wherein multiple devices perform target sensing and over-the-air computation (AirComp) simultaneously. We aim to minimize the computational mean squared error (MSE) by jointly optimizing the transmitting vector and the aggregation vector. To tackle the non-convexity of the formulated problem, we develop a two-phase iterative algorithm. Simulations demonstrate that the proposed algorithm can achieve a better sensing-computation trade-off.