  In this paper, we study the joint impact of three major RF im-pairments,
namely, oscillator phase noise, power amplifier non-linearity and I/Q imbalance
on the performance of a mm-wave communication link based on OFDM modulation.
General im-pairment models are first derived for describing the joint effects
in each TX, each RX as well as a mm-wave communication link. Based on the
obtained signal models and initial air interface de-sign from the mmMAGIC
project, we numerically evaluate the impact of RF impairments on channel
estimation in terms of channel-to-noise ratio (CNR) and also channel
fluctuation due to common phase error (CPE) caused by phase noise within the
channel coherence time. Then the impact on the link performance in terms of
maximum sum rate is evaluated using extensive com-puter simulations. The
simulation results show that the used air interface design is generally robust
to the presence of RF impair-ments. With regard to the use of high order
modulation alphabet and implementation of low-power and low-cost RF
transceivers in mm-wave communication, special attention needs to be paid on
phase noise where the inter-carrier-interference (ICI) can become a major
limiting factor.
