… the system sum rate, the weak user on each subcarrier will not be assigned any power.
Therefore, to guarantee the user fairness, we adopt the weighted sum rate. Generally, the user …

… In [12] the authors solved the PF-based user pairing and power allocation problems in the
2-user NOMA system. In this paper, we generalize the work into the multi-user NOMA systems. …

… full diversity and simultaneously ensuring fairness among users. The main contributions of …
a NOMA system consisting of a base station (BS), a weak user (WU) and K intermediate users …

… section, the system model of the considered downlink NOMA systems is presented.
Additionally, the problem of sum-rate maximization is formulated to improve SE and user fairness. …

… user VLC system. Since intra-pair power allocation can be performed to ensure user fairness
within each user … allocation ratios for two user pairs in the four-user VLC system. Figures 8(a…

… system with one BS and two NOMA users in each C-NOMA pair. In phase I, ie, NOMA phase,
BS transmits a NOMA … of two users’ data (N1 bits, user 1’s data and N2 bits, user 2’s data). …

… a hybrid NOMA-OMA scheme to further enhance the users fairness. … fairness enhancement
of the proposed hybrid NOMA-OMA scheme compared to the conventional OMA and NOMA …

… where the interfering users are placed outside the cell. … in NOMA system in terms of
sum-power allocation coefficients which guarantees of equal rate (fairness approach) for all users. …

… of a NOMA-user while benefiting from multiplexing gains in a multiuser NOMA systems. In this
article… In this section, first, the system model for a secondary NOMA networks is introduced, …

… at user fairness amongst the users by increasing the throughput of WUs, especially when
the number of users increases in a NOMA … throughput of each user in a NOMA group while …