Paper Info
Title
Dynamic Power And Channel Allocation For Downlink Multi-Channel Noma Systems
Abstract
Non-orthogonal multiple access (NOMA) has been investigated as a candidate radio access technology for the fifth generation mobile networks. In this paper, we focus on the dynamic power and channel allocation (DPCA) schemes for downlink multi-channel NOMA (MC-NOMA) systems. First, we assume an ideal MC-NOMA system with an arbitrary number of multiplexed users per subchannel and develop the optimal DPCA scheme for it based on a low-complexity inter-channel power allocation algorithm. Its performance serves as an upper bound for practical MC-NOMA systems where the number of multiplexed users per subchannel is limited. We utilize this optimal scheme and propose a user preselection (UP)-based DPCA scheme for practical systems. The performance of the UP-based DPCA scheme is evaluated by simulations and compared with the optimal scheme in the literature and the upper bound obtained in the ideal system. It achieves close-to-optimal performance with extremely low computational complexity. Moreover, we analyze the impacts of multi-user and multi-channel diversities on the system performance, serving as a guideline for practical deployments and configurations of MC-NOMA systems.
Year
DOI
Venue
2018
10.1109/PIMRC.2018.8580745
2018 IEEE 29TH ANNUAL INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS (PIMRC)
Keywords
Field
DocType
Non-orthogonal multiple access, power and channel allocation, multi-channel diversity, multi-user diversity, proportional fairness
Noma,Upper and lower bounds,Computer science,Real-time computing,Dynamic demand,Radio access technology,Multiplexing,Channel allocation schemes,Computer engineering,Computational complexity theory,Telecommunications link
Conference
Citations 
PageRank 
References 
0
0.34
0
Authors
2
Name
Order
Citations
PageRank
Fei Liu1415.78
Marina Petrova257465.84