power allocation in noma with decoding order error of successive interference cancellation

In this paper, the decoding order error of successive interference cancellation (sic) of multicarrier nonorthogonal multiple access (noma) due to the random walk of the users and position estimation deviation is considered in resource allocation. this factor extremely degrades the performance of noma in terms of sum rate and outage probability. therefore, two optimal power allocation strategies for users are derived that maximize the sum rate and minimize the outage probability. the simulation results show that by considering the decoding order error in resource allocation, better performance can be achieved compared to the previous power allocation algorithms without considering this fact, which are a well-known water filling algorithm and a power allocation that maximizes the rate with minimum rate constraint.