Multi-Polarization Superposition Beamforming: Novel Scheme of Transmit Power Allocation and Subcarrier Assignment

Seungcheol Oh

Abstract:

The 5th generation (5G) new radio (NR) access
technology and the beyond-5G future wireless communication
require extremely high data rate and spectrum efficiency. Energyefficient transmission/reception schemes are also regarded as an
important component. The polarization domain has attracted
substantial attention in this aspects. This paper is the first
to propose multi-polarization superposition beamforming (MPSBeamforming) with cross-polarization discrimination (XPD) and
cross-polarization ratio (XPR)-aware transmit power allocation
utilizing the 5G NR antenna panel structure. The appropriate
orthogonal frequency division multiplexing (OFDM) subcarrier
assignment algorithm is also proposed to verify the theoretical
schemes via simulations. The detailed theoretical derivation along
with comprehensive simulation results illustrate that the proposed
novel scheme of MPS-Beamforming is significantly beneficial to
the improvement of the performance in terms of the symbol
error rate (SER) and signal-to-noise ratio (SNR) gain at the
user equipment (UE). For instance, a provided practical wireless
channel environment in the simulations exhibits 8 dB SNR gain
for 10−4 SER in a deterministic channel, and 4 dB SNR gain for
10−5 SER in abundant statistical channel realizations.