  In this paper, we study the problem of minimizing the uplink aggregate
transmit power subject to the users' minimum data rate and peak power
constraint on each sub-channel for multi-cell wireless networks. To address
this problem, a distributed sub-optimal joint power and rate control algorithm
called JPRC is proposed, which is applicable to both non-orthogonal
frequency-division multiple access (NOMA) and orthogonal frequency-division
multiple access (OFDMA) schemes. Employing JPRC, each user updates its transmit
power using only local information. Simulation results illustrate that the JPRC
algorithm can reach a performance close to that obtained by the optimal
solution via exhaustive search, with the NOMA scheme achieving a 59\%
improvement on the aggregate transmit power over the OFDMA counterpart. It is
also shown that the JPRC algorithm can outperform existing distributed power
control algorithms.
