Two-Sample Tests for Validating the UL-DL Conjecture in FDD Systems

In this work, we present a two-sample tests analysis based on the maximum mean discrepancy metric to validate the recently proposed uplink-downlink conjecture for frequency division duplex systems. This novel concept shows that a neural network trained with uplink channel data can adequately generalize to downlink channel data. With this paper, we focus on a particular application of this idea, na...