Concurrent Spoofing-Jamming Attack in Massive MIMO Systems with a Full-Duplex Multi-Antenna Eavesdropper

In this paper, we evaluate the ultimate severity of a concurrent spoofing-jamming un-detected attack from full-duplex (FD) multi-antenna eavesdropper (EV) on legitimate user equipment (UE) in massive multiple-input multiple-output (MIMO) system. The FD EV can concurrently exploit its antennas to spoof one UE pilot and estimate link same uplink, then eavesdrop UE's data perform directional jamming downlink. From perspective EV, derive an expression for ergodic rate difference, which is general any possible overlap between spoofing antenna subsets. Residual self-interferences their statistical dependencies are accounted derived expression. optimizes trade-off both powers, subsets minimize difference. Numerical results show that capable destroying security communication with small number power budget equal attacked UE. depends EV's knowledge allocation strategies used at base station (BS).