A phase noise (PN) mitigation scheme was proposed for orthogonalfrequency division multiplexing (OFDM) in a previous work.The proposed scheme does not require detailed knowledge of PN statisticsand can eectively compensate the PN with sucient number ofunknowns. In this paper, we analyze the performance of PN estimation/mitigation using the proposed scheme. It is shown that increasingthe number of unknowns reduces the modeling error, yet increases theadditive noise. Hence, increasing the number of unknowns increases thecomputational complexity and can even degrade the estimation performance.It is also shown that the PN spectral shape of the phase-lockedloop(PLL) based oscillator also aects the PN mitigation and that alarger PN may not necessarily degrade the performance of the OFDMsystem with PN mitigation. Simulations with realistic millimeter-wave(mmWave) PN and channel models are conducted to verify these ndings.
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