TY - GEN
T1 - Optimal Power Allocations for 5G Non-Orthogonal Multiple Access with Half/Full Duplex Relaying
AU - Shen, Zhou
AU - Liu, Gang
AU - Ding, Zhiguo
AU - Xiao, Ming
AU - Ma, Zheng
AU - Yu, F. Richard
N1 - Funding Information:
The work of G. Liu was jointly supported by the National Natural Science Foundation of China (No. 61601377), Sichuan Science and Technology Program (No. 2019YJ0248) and the open research fund of National Mobile Communications Research Laboratory, Southeast University (No. 2019D05). The work of Z. Ding was supported by the UK EPSRC (No. EP/L025272/2) and by H2020-MSCA-RISE-2015 (No. 690750). The work of Zheng Ma was supported by National Natural Science Foundation of China ( No. 61571373, No. U1709219 ), Key International Cooperation Project of Sichuan Province (No. 2017HH0002), Marie Curie Fellowship (No. 792406), and NSFC China-Swedish project (No. 6161101297).
Publisher Copyright:
© 2019 IEEE.
PY - 2019/5
Y1 - 2019/5
N2 - Recently, power allocation has attracted more and more attention in order to optimize the performance of non-orthogonal multiple access (NOMA) systems. Different from existing works, the power allocation problems are investigated for cooperative NOMA systems with dedicated amplify-and-forward half-duplex relay (NOMA-HDR) and full-duplex relay (NOMA-FDR). From the fairness standpoint, the power allocation problems are formulated to maximize the minimum achievable user rate in the considered systems. The problems for both NOMA-HDR and NOMA-FDR systems with two-user and M-user are addressed. The closed-form power allocation policy of two-user NOMA-HDR system is obtained. Also, the optimal numerical power allocation policies for two-user NOMA-FDR and M-user NOMA-HDR systems are obtained. In addition, the problem for M-user NOMA-FDR systems is solved in noise-limited environment. Simulation results show that the proposed NOMA-HDR or NOMA-FDR scheme with power adaption clearly outperforms the NOMA-HDR or NOMA-FDR scheme with fixed power allocation. Besides, when the residual self-interference channel gain is small, the performance of NOMA-FDR system is better than the NOMA-HDR system.
AB - Recently, power allocation has attracted more and more attention in order to optimize the performance of non-orthogonal multiple access (NOMA) systems. Different from existing works, the power allocation problems are investigated for cooperative NOMA systems with dedicated amplify-and-forward half-duplex relay (NOMA-HDR) and full-duplex relay (NOMA-FDR). From the fairness standpoint, the power allocation problems are formulated to maximize the minimum achievable user rate in the considered systems. The problems for both NOMA-HDR and NOMA-FDR systems with two-user and M-user are addressed. The closed-form power allocation policy of two-user NOMA-HDR system is obtained. Also, the optimal numerical power allocation policies for two-user NOMA-FDR and M-user NOMA-HDR systems are obtained. In addition, the problem for M-user NOMA-FDR systems is solved in noise-limited environment. Simulation results show that the proposed NOMA-HDR or NOMA-FDR scheme with power adaption clearly outperforms the NOMA-HDR or NOMA-FDR scheme with fixed power allocation. Besides, when the residual self-interference channel gain is small, the performance of NOMA-FDR system is better than the NOMA-HDR system.
UR - http://www.scopus.com/inward/record.url?scp=85070207596&partnerID=8YFLogxK
U2 - 10.1109/ICC.2019.8761923
DO - 10.1109/ICC.2019.8761923
M3 - Conference contribution
AN - SCOPUS:85070207596
T3 - IEEE International Conference on Communications
BT - 2019 IEEE International Conference on Communications, ICC 2019 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 IEEE International Conference on Communications, ICC 2019
Y2 - 20 May 2019 through 24 May 2019
ER -