Title
Advanced User Association in Non-Orthogonal Multiple Access-Based Fog Radio Access Networks
Abstract
Non-orthogonal multiple access (NOMA) is promising to further improve spectral efficiency (SE) and decrease transmit latency in fog radio access networks (F-RANs) through serving multi-users in the same frequency-time resource block simultaneously, while the complexity of user association is challenging to exploit the corresponding performance gains. In this paper, a performance analysis framework for the user association in NOMA based F-RANs is proposed and the closed-form analytical results are developed by using stochastic geometry tool. In particular, we propose two user association algorithms based on evolutionary game and reinforcement learning, respectively. The performance model jointly considering quality of service, delay cost, and power consumption is formulated as a payoff function, and the corresponding performance expressions are derived for these two user association algorithms. Numerical and simulation results demonstrate that the derived expressions are accurate, and the NOMA based F-RAN can provide over 50% performance gains on SE compared to the orthogonal multiple access scheme. Furthermore, these two proposed user association algorithms work well with high convergence, which can effectively enhance the overall performance and the fairness of users.
Year
DOI
Venue
2019
10.1109/TCOMM.2019.2939316
IEEE Transactions on Communications
Keywords
DocType
Volume
NOMA,Resource management,Reinforcement learning,Performance gain,Games,Reliability,Heuristic algorithms
Journal
67
Issue
ISSN
Citations 
12
0090-6778
2
PageRank 
References 
Authors
0.36
0
4
Name
Order
Citations
PageRank
Lin Qi1107.28
Mugen Peng22779200.37
Yaqiong Liu32510.94
Shi Yan412719.94