4 research outputs found
Student Research Symposium 2019
Conference Program for the Georgia Southern University Research Symposium held on the Statesboro Campus on April 18, 2019
Rate Maximization in Vehicular uRLLC with Optical Camera Communications
Optical camera communication (OCC) has emerged as a key enabling technology
for the seamless operation of future autonomous vehicles. By leveraging the
supreme performance of OCC, we can meet the stringent requirements of
ultra-reliable and low-latency communication (uRLLC) in vehicular OCC. In this
paper, we introduce a rate optimization approach in vehicular OCC through
optimal power allocation while respecting uRLLC requirements. We first
formulate a discrete-rate optimization problem as a mixed-integer programming
(MIP) subject to average transmit power and uRLLC constraints for a given set
of modulation schemes. To reduce the complexity in solving the MIP problem, we
convert the discrete-rate problem into a continuous-rate optimization scheme.
Then, we present an algorithm based on Lagrangian relaxation and Bisection
method to solve the optimization problem. Considering the proposed algorithm,
we drive the rate optimization and power allocation scheme for both
discrete-rate and continuous-rate optimization schemes while satisfying uRLLC
constraints. We first analyze the performance of the proposed system model
through simulations. We then investigate the impact of proposed power
allocation and rate optimization schemes on average rate and latency for
different target bit error rates. The results show that increasing the transmit
power allocation improves the average rate and latency performance.Comment: 30 Pages, 13 Figure