TY - JOUR
T1 - Energy-efficient communication for user-relay aided cellular networks with OFDMA
AU - Baştürk, İlhan
AU - Chen, Yunfei
AU - Alouini, Mohamed Slim
N1 - Funding Information:
This research was supported by The Scientific and Technological Research Council of Turkey (TÜBİTAK) International Post Doctoral Research Fellowship Programme ( BİDEB-2219 ).
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/4
Y1 - 2019/4
N2 - The dramatic increase of mobile devices and mobile subscriptions for delay-sensitive high-rate multimedia services has caused rapidly rising energy consumption, which is a big problem for the next generation wireless networks. It is urgent to find solutions that can satisfy the high data rate quality of service (QoS) requirements from users and obtain high energy-efficiency (EE) for the network at the same time. In this paper, energy-efficient communication is investigated for the orthogonal frequency-division multiple-access (OFDMA) based user-relay aided cellular networks that is envisioned as a promising technology to unlock the full potential of 5G networks. The EE maximization problem is formulated for dual-hop user-relay aided downlink cellular networks. Decode-and-forward (DF) relaying strategy is used by considering the QoS constraints. Since the formulated problem is a mixed-integer non-linear programming problem (MINLP) that is difficult to solve for multi-carrier, multi-user, multi-relay networks, a two-stage radio resource management solution is proposed to tackle the problem. The advantages of the proposed scheme, which not only considers the EE but also meets the data rate requirements of the users, are revealed by performing extensive simulations.
AB - The dramatic increase of mobile devices and mobile subscriptions for delay-sensitive high-rate multimedia services has caused rapidly rising energy consumption, which is a big problem for the next generation wireless networks. It is urgent to find solutions that can satisfy the high data rate quality of service (QoS) requirements from users and obtain high energy-efficiency (EE) for the network at the same time. In this paper, energy-efficient communication is investigated for the orthogonal frequency-division multiple-access (OFDMA) based user-relay aided cellular networks that is envisioned as a promising technology to unlock the full potential of 5G networks. The EE maximization problem is formulated for dual-hop user-relay aided downlink cellular networks. Decode-and-forward (DF) relaying strategy is used by considering the QoS constraints. Since the formulated problem is a mixed-integer non-linear programming problem (MINLP) that is difficult to solve for multi-carrier, multi-user, multi-relay networks, a two-stage radio resource management solution is proposed to tackle the problem. The advantages of the proposed scheme, which not only considers the EE but also meets the data rate requirements of the users, are revealed by performing extensive simulations.
KW - Decode-and-forward relaying
KW - Energy-efficiency
KW - Orthogonal frequency-division multiple-access
KW - User-relaying
UR - http://www.scopus.com/inward/record.url?scp=85060242113&partnerID=8YFLogxK
U2 - 10.1016/j.phycom.2018.12.021
DO - 10.1016/j.phycom.2018.12.021
M3 - Article
AN - SCOPUS:85060242113
SN - 1874-4907
VL - 33
SP - 153
EP - 164
JO - Physical Communication
JF - Physical Communication
ER -
