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Phase Impairment Estimation for mmWave MIMO Systems

Most millimeter-wave (mmWave) multiple-input multiple-output (MIMO) systems are negatively affected by phase noise and carrier frequency offset due to non-ideal transceiver hardware components. If not compensated, the phase impairments significantly reduce the data rates of such systems. Much prior work either ignored these impairments or proposed high-complexity estimation algorithms. In this paper, we consider a mmWave MIMO system model that takes into account many practical hardware impairments. Our main contributions are a problem formulation of phase impairments and a low-complexity estimation method to solve the problem. Numerical results are provided to evaluate the performance of the proposed algorithm. In particular, it works quite well in the wide range of phase noise variances.