Paper Info
Title
Proportional Fairness-Based Power Allocation And User Set Selection For Downlink Noma Systems
Abstract
The non-orthogonal multiple access (NOMA) has been investigated recently as a candidate radio access technology for the next generation mobile networks. It realizes power-domain user multiplexing by employing the successive interference cancellation (SIC). This paper focuses on the power allocation and user set selection problems in multi-user downlink NOMA systems with the aim of providing proportional fairness. The theoretical optimal power allocation solution for a candidate user set is derived in closed form. We propose a tree searching-based user set selection scheme in which the redundant user sets are removed by a delicately designed pruning method. The transmission performance of the proposed power allocation and user set selection schemes is evaluated by system-level simulations and verified to be close to the optimal value. The searching complexity for user set selection is significantly reduced compared to the exhaustive searching method. Finally, the performance gains brought by the multi-user NOMA are analyzed considering the practical application.
Year
DOI
Venue
2016
10.1109/ICC.2016.7510916
2016 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC)
Keywords
Field
DocType
Non-orthogonal multiple access, power allocation, user set selection, proportional fairness
Mobile computing,Mobile radio,System-level simulation,Computer science,Single antenna interference cancellation,Real-time computing,Radio access technology,Multiplexing,Telecommunications link,Next Generation Mobile Networks
Conference
ISSN
Citations 
PageRank 
1550-3607
8
0.59
References 
Authors
8
3
Name
Order
Citations
PageRank
Fei Liu1415.78
Petri Mähönen21610150.99
Marina Petrova357465.84