Over-the-Air Computation in OFDM Systems with Imperfect Channel State Information
Over-the-Air Computation in OFDM Systems with Imperfect Channel State Information
This paper studies the over-the-air computation (AirComp) in an orthogonal frequency division multiplexing (OFDM) system with imperfect channel state information (CSI), in which multiple single-antenna wireless devices (WDs) simultaneously send uncoded signals to a multi-antenna access point (AP) for distributed functional computation over multiple subcarriers. In particular, we consider two …