In this work the performance of the downlink
non-orthogonal multiple access (NOMA) technique is
investigated for two users, that is, cell centre user (user
c) and cell edge user (user e). The performance of these
users is highly dependent on the power split among the
data flows and the associated power allocation (PA)
problem. In this research we propose a power allocation
scheme that ensures fairness for the downlink users
ensuring improved quality of service (QoS). The system
is analysed based on outage probability which is
dependent on the channel state information (CSI) and is
compared to the fixed power allocation scheme. The
simulation results demonstrate the improvement in
performance of the users when dynamic allocation is
used as compared to the fixed power allocation scheme
Keywords :
NOMA, 5G, Power allocation, Outage probability.