Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Resource Allocation for D2D Communications Underlaying a NOMA-Based
  Cellular Network   This letter investigates the power control and channel assignment problem in
device-to-device (D2D) communications underlaying a non-orthogonal multiple
access (NOMA) cellular network. With the successive interference cancellation
decoding order constraints, our target is to maximize the sum rate of D2D pairs
while guaranteeing the minimum rate requirements of NOMA-based cellular users.
Specifically, the optimal conditions for power control of cellular users on
each subchannel are derived first. Then, based on these results, we propose a
dual-based iterative algorithm to solve the resource allocation problem.
Simulation results validate the superiority of proposed resource allocation
algorithm over the existing orthogonal multiple access scheme.

37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an