The main goal of vehicular communication is to
provide a more safe and efficient vehicular operation. The
challenge in a Vehicle-to-Everything (V2X) network is to provide
reliable connectivity for the Vehicle-to-Vehicle (V2V) links and
high data rate connectivity for the Vehicle-to-Infrastructure (V2I)
links at the same time. This requirement leads to spectrum sharing
in vehicular communication. As the vehicular systems increases,
the transmit power levels increases in the environment which in
turn causes harmful effects on the atmosphere. The objective of
this paper is to analyze the graph-based spectrum sharing
algorithms that are available for vehicular communication and to
develop a power optimization algorithm based on Hidden Markov
Model (HMM) and to incorporate it into these algorithms in such
a way to achieve better sum capacity for the V2I links along with a
guaranteed reliability for the V2V links.
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