TY - GEN
T1 - User association in non-orthogonal multiple access networks
AU - Wang, Kaidi
AU - Liu, Yuanwei
AU - Ding, Zhiguo
AU - Nallanathan, Arumugam
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/7/27
Y1 - 2018/7/27
N2 - In this paper, the flexible user association is inves- tigated in non- orthogonal multiple access (NOMA)-based multi- ple base stations (BSs) networks. More particularly, users are partitioned into multiple orthogonal clusters to allocate into different resource blocks (RBs) for avoiding serious co-channel interferences. In an effort to maximize the weighted sum rate of the system, a user association optimization problem is formulated. Two algorithms based on coalitional game are proposed for obtaining suboptimal and global optimal solutions, respectively. The properties of the proposed algorithms, including complexity, convergence, stability and optimality are analyzed. Simulation re- sults demonstrate that: i) the proposed algorithms can significantly enhance the weighted sum rate of the considered systems; ii) the proposed NOMA-based system is capable of achieving promising gains over conventional orthogonal multiple access (OMA)-based framework, and iii) the considered distance based weight factor can greatly improve the fairness of users.
AB - In this paper, the flexible user association is inves- tigated in non- orthogonal multiple access (NOMA)-based multi- ple base stations (BSs) networks. More particularly, users are partitioned into multiple orthogonal clusters to allocate into different resource blocks (RBs) for avoiding serious co-channel interferences. In an effort to maximize the weighted sum rate of the system, a user association optimization problem is formulated. Two algorithms based on coalitional game are proposed for obtaining suboptimal and global optimal solutions, respectively. The properties of the proposed algorithms, including complexity, convergence, stability and optimality are analyzed. Simulation re- sults demonstrate that: i) the proposed algorithms can significantly enhance the weighted sum rate of the considered systems; ii) the proposed NOMA-based system is capable of achieving promising gains over conventional orthogonal multiple access (OMA)-based framework, and iii) the considered distance based weight factor can greatly improve the fairness of users.
UR - http://www.scopus.com/inward/record.url?scp=85051431665&partnerID=8YFLogxK
U2 - 10.1109/ICC.2018.8422457
DO - 10.1109/ICC.2018.8422457
M3 - Conference contribution
AN - SCOPUS:85051431665
SN - 9781538631805
T3 - IEEE International Conference on Communications
BT - 2018 IEEE International Conference on Communications, ICC 2018 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2018 IEEE International Conference on Communications, ICC 2018
Y2 - 20 May 2018 through 24 May 2018
ER -