Name
Abstract | ||
|---|---|---|
As a promising physical layer technique, nonorthogonal multiple access (NOMA) can admit multiple users over the same space-time resource block, and thus improve the spectral efficiency and increase the number of access users. Specifically, NOMA provides a feasible solution to massive Internet of Things (IoT) in 5G and beyond-5G wireless networks over a limited radio spectrum. However, severe co-channel interference and high implementation complexity hinder its application in practical systems. To solve these problems, multiple-antenna techniques have been widely used in NOMA systems by exploiting the benefits of spatial degrees of freedom. This study provides a comprehensive review of various multiple-antenna techniques in NOMA systems, with an emphasis on spatial interference cancellation and complexity reduction. In particular, we provide a detailed investigation on multiple-antenna techniques in two-user, multiuser, massive connectivity, and heterogeneous NOMA systems. Finally, future research directions and challenges are identified. |
Year | DOI | Venue |
|---|---|---|
2019 | 10.1631/FITEE.1900405 | Frontiers of Information Technology & Electronic Engineering |
Keywords | Field | DocType |
Nonorthogonal multiple access, Multiple-antenna technique, B5G, Internet of Things, TN929.5 | Mathematical optimization,Computer science,Electronic engineering,Multiple antenna | Journal |
Volume | Issue | ISSN |
20 | 12 | 2095-9184 |
Citations | PageRank | References |
2 | 0.36 | 166 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Feiyan Tian | 1 | 4 | 1.45 |
| Xiaoming Chen | 2 | 857 | 51.25 |