  With the occupancy of the existing frequency spectrum the demands of the
skyrocketing data traffic paved the path for 5G millimeter Wave (mmWave)
technology. The wide frequency spectrum and high directivity can elevate the
mean data rate. This performance gain comes at the cost of a higher pathloss
which limits the use of mmWave technology to small cells. Also at such high
frequencies the multipath components and blockages appear as persistent
barriers leading to alteration of antenna polarization, affecting resource
scheduler performance and throughput degradation. The impact of these barriers
for high velocity user equipments (UEs) in mmWave network is still left to be
studied. Using closed loop spatial multiplexing transmission scheme this study
analyses the effect of receiver antenna polarization and types of resource
scheduler used in base station on the downlink performance of mobile users
(0-120kmph) in the mmWave small cell network. Thorough investigation has been
conducted to infer which antenna combination should be advantageous under
different scheduling algorithms for high mobility UEs. Our results indicate
that the scheduler performance is complimented by the receiver antenna
polarization, and by appropriate selection a better downlink performance can be
sustained. Also reception under linear polarization performs better over
circular polarization for high velocity UEs.
