Abstract
In this paper, we investigate a coordinated direct and relay transmission for uplink (CDRT-UL) of a cooperative non-orthogonal multiple access (NOMA) system, in which two users communicate with a base station (BS) with the aid of a decode-and-forward relay. By incorporating both relay links and non-negligible direct links from two users to BS, the CDRT-UL scheme forms an orthogonal structure at the BS receiver side, so that the BS receiver applies only linear combinations to recover the desired signals without abusing successive interference cancellation. Outage probability of the paired two users is derived in closed-form under independent but not necessarily identically distributed Nakagami-m fading channels. Asymptotic analysis in the high signal-to-noise ratio regime is also introduced that provides closed-form expressions, which indicates that both two users achieve the same asymptotic outage performance. It is also shown that an improved outage performance and the higher target rate can be achieved by the CDRT-UL scheme over those of the DF relay without direct links. The enhanced system performance achieved by the CDRT-UL scheme is corroborated by Monte Carlo simulations.
| Original language | English |
|---|---|
| Title of host publication | 2018 IEEE Global Communications Conference, GLOBECOM 2018 - Proceedings |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9781538647271 |
| DOIs | |
| Publication status | Published - Feb 20 2019 |
| Event | 2018 IEEE Global Communications Conference, GLOBECOM 2018 - Abu Dhabi, United Arab Emirates Duration: Dec 9 2018 → Dec 13 2018 |
Publication series
| Name | 2018 IEEE Global Communications Conference, GLOBECOM 2018 - Proceedings |
|---|
Conference
| Conference | 2018 IEEE Global Communications Conference, GLOBECOM 2018 |
|---|---|
| Country | United Arab Emirates |
| City | Abu Dhabi |
| Period | 12/9/18 → 12/13/18 |
Fingerprint
Keywords
- coordinated transmission
- decode-andforward
- Non-orthogonal multiple access
- outage probability
ASJC Scopus subject areas
- Information Systems and Management
- Renewable Energy, Sustainability and the Environment
- Safety, Risk, Reliability and Quality
- Signal Processing
- Modelling and Simulation
- Instrumentation
- Computer Networks and Communications
Cite this
Coordinated Uplink Transmission for Cooperative NOMA Systems. / Liu, Hongwu; Miridakis, Nikolaos I.; Tsiftsis, Theodoros; Kim, Kyeong Jin; Kwak, Kyung Sup.
2018 IEEE Global Communications Conference, GLOBECOM 2018 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2019. 8647831 (2018 IEEE Global Communications Conference, GLOBECOM 2018 - Proceedings).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Coordinated Uplink Transmission for Cooperative NOMA Systems
AU - Liu, Hongwu
AU - Miridakis, Nikolaos I.
AU - Tsiftsis, Theodoros
AU - Kim, Kyeong Jin
AU - Kwak, Kyung Sup
PY - 2019/2/20
Y1 - 2019/2/20
N2 - In this paper, we investigate a coordinated direct and relay transmission for uplink (CDRT-UL) of a cooperative non-orthogonal multiple access (NOMA) system, in which two users communicate with a base station (BS) with the aid of a decode-and-forward relay. By incorporating both relay links and non-negligible direct links from two users to BS, the CDRT-UL scheme forms an orthogonal structure at the BS receiver side, so that the BS receiver applies only linear combinations to recover the desired signals without abusing successive interference cancellation. Outage probability of the paired two users is derived in closed-form under independent but not necessarily identically distributed Nakagami-m fading channels. Asymptotic analysis in the high signal-to-noise ratio regime is also introduced that provides closed-form expressions, which indicates that both two users achieve the same asymptotic outage performance. It is also shown that an improved outage performance and the higher target rate can be achieved by the CDRT-UL scheme over those of the DF relay without direct links. The enhanced system performance achieved by the CDRT-UL scheme is corroborated by Monte Carlo simulations.
AB - In this paper, we investigate a coordinated direct and relay transmission for uplink (CDRT-UL) of a cooperative non-orthogonal multiple access (NOMA) system, in which two users communicate with a base station (BS) with the aid of a decode-and-forward relay. By incorporating both relay links and non-negligible direct links from two users to BS, the CDRT-UL scheme forms an orthogonal structure at the BS receiver side, so that the BS receiver applies only linear combinations to recover the desired signals without abusing successive interference cancellation. Outage probability of the paired two users is derived in closed-form under independent but not necessarily identically distributed Nakagami-m fading channels. Asymptotic analysis in the high signal-to-noise ratio regime is also introduced that provides closed-form expressions, which indicates that both two users achieve the same asymptotic outage performance. It is also shown that an improved outage performance and the higher target rate can be achieved by the CDRT-UL scheme over those of the DF relay without direct links. The enhanced system performance achieved by the CDRT-UL scheme is corroborated by Monte Carlo simulations.
KW - coordinated transmission
KW - decode-andforward
KW - Non-orthogonal multiple access
KW - outage probability
UR - http://www.scopus.com/inward/record.url?scp=85063511657&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85063511657&partnerID=8YFLogxK
U2 - 10.1109/GLOCOM.2018.8647831
DO - 10.1109/GLOCOM.2018.8647831
M3 - Conference contribution
T3 - 2018 IEEE Global Communications Conference, GLOBECOM 2018 - Proceedings
BT - 2018 IEEE Global Communications Conference, GLOBECOM 2018 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
ER -