Pilot Designs and Compensation Scheme for Severe RF Distortions in Millimeter-Wave Massive MIMO Systems

Emerging millimeter-wave massive MIMO systems are subject to strong radio frequency (RF) distortions and their compensation is crucial to meet the high performance targets of such systems. This paper presents novel pilot designs and related estimators for multi-input multi-output (MIMO) millimeter-wave systems characterized by frequency-selective channels, mirror interference, and time-varying inter-carrier interferences at both the transmitter and receiver. The bit error rate (BER) simulation results illustrate that our proposed designs achieve substantially lower BER than reference pilot designs in the literature.