  Non-orthogonal multiple access (NOMA) has been identified as one of the
promising technologies to enhance the spectral efficiency and throughput for
the fifth generation (5G) and beyond 5G cellular networks. Alternatively,
Coordinated multi-point transmission and reception (CoMP) improves the cell
edge users' coverage. Thus, CoMP and NOMA can be used together to improve the
overall coverage and throughput of the users. However, user grouping and
pairing for CoMP-NOMA-based cellular networks have not been suitably studied in
the existing literature. Motivated by this, we propose a user grouping and
pairing scheme for a CoMP-NOMA-based system. Detailed numerical results are
presented comparing the proposed scheme with the purely OMA-based benchmark
system, NOMA only, and CoMP only systems. We show through simulation results
that the proposed scheme offers a trade-off between throughput and coverage as
compared to the existing NOMA or CoMP based system.
