Abstract
Assuming a cooperative non-orthogonal multiple access (NOMA) system with rate fairness in a scenario with multiple users and arbitrary relays, this paper investigates adaptive power allocation (PA), relay selection (RS), and user pairing (UP) policies. Specifically, two adaptive PA optimization problems are formulated, one at the base station (BS) and another at the selected relays. Closed-form expressions for the power allocation factors are derived as well as an algorithm that provides the optimal solution at the BS. In order to show the superiority of the proposed study, our results are compared with other benchmark schemes in terms of outage probability, Jain's fairness index, and average sum rate.
| Original language | English |
|---|---|
| Title of host publication | 2021 IEEE 93rd Vehicular Technology Conference, VTC 2021-Spring - Proceedings |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9781728189642 |
| DOIs | |
| State | Published - Apr 2021 |
| Externally published | Yes |
Publication series
| Name | IEEE Vehicular Technology Conference |
|---|---|
| Volume | 2021-April |
| ISSN (Print) | 1550-2252 |
Bibliographical note
Publisher Copyright:© 2021 IEEE.
Keywords
- NOMA
- power allocation
- rate fairness
- relay selection
- user pairing
ASJC Scopus subject areas
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics
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