Power Allocation-Based NOMA and Underlay D2D Communication for Public Safety Users in the 5G Cellular Network

Throughput maximization in multi-slice cooperative NOMA-based system with underlay D2D communications

“…Besides, for incorporating D2D communications in cellular NOMA-based systems, different research works have been conducted as in [31,32,33,41,42,43,44]. In [31,32,41], the authors propose D2D communications underlaying cellular CNOMA-based system.…”

“…While in [41], the authors aim to maximize the fairness among CUs and D2D pairs alongside the overall system throughput, that's by optimizing channel and power allocations. The works conducted in [33,42] study NOMA in the underlay D2D communications, where multiple NOMA-based D2D groups share the channel allocated to one cellular user. The authors optimize subchannel and power allocation with the aim of maximizing the overall system throughput.…”

“…• For the underlay D2D communication, at maximum, q underlay D2D pairs can share the RBs allocated to each NOMA group k ∈ N s [33,30,32,31]. This is to limit the D2D-cellular interference.…”

“…The maximum number of D2D pairs is pre-defined to limit the D2D-cellular interference inline with the underlay D2D literature[30,31,32,33].…”