Impact of User Pairing on 5G Nonorthogonal Multiple-Access Downlink Transmissions
Lancaster University · Southwest Jiaotong University · +1 more institution
Abstract
Nonorthogonal multiple access (NOMA) represents a paradigm shift from conventional orthogonal multiple-access (MA) concepts and has been recognized as one of the key enabling technologies for fifth-generation mobile networks. In this paper, the impact of user pairing on the performance of two NOMA systems, i.e., NOMA with fixed power allocation (F-NOMA) and cognitive-radio-inspired NOMA (CR-NOMA), is characterized. For F-NOMA, both analytical and numerical results are provided to demonstrate that F-NOMA can offer a larger sum rate than orthogonal MA, and the performance gain of F-NOMA over conventional MA can be further enlarged by selecting users whose channel conditions are more distinctive. For CR-NOMA, the…
Citation impact
- FWCI
- 87.34
- Percentile
- 100%
- References
- 21
Authors
3Topics & keywords
- Noma
- Telecommunications link
- Computer science
- Quality of service
- Computer network
- Channel (broadcasting)
- Cognitive radio
- Constraint (computer-aided design)
- No poverty