TY - GEN
T1 - Network Sum-Rate Maximization for NOMA-Based Multicast Cognitive Radio Networks with SWIPT-Enabled Relays
AU - Al-Refaei, Alaa
AU - Baidas, Mohammed W.
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - In this paper, the problem of joint relay selection, power-splitting, and power allocation (J-RS-PS-PA) for network sum-rate maximization in non-orthogonal multiple-access (NOMA)-based multicast cognitive radio networks is considered. Specifically, the primary and secondary transmitters communicate - via simultaneous wireless information and power transfer (SWIPT)-enabled relays - with their respective receivers, subject to minimum rate requirements. Due to the non-convexity (and hence the excessive computational-complexity) of the formulated problem, it is decoupled and solved via a low-complexity solution procedure over two stages: (1) J-PS-PA, and (2) RS. For the first stage, an iterative two-layer algorithm is devised to maximize the sum-rate over each relay, while in the second stage, the optimal relay is selected. Simulation results revealed that the proposed solution procedure efficiently yields near-optimal network sum-rate as well as being superior to other benchmark schemes, while satisfying the minimum rate requirements of all primary and secondary receivers.
AB - In this paper, the problem of joint relay selection, power-splitting, and power allocation (J-RS-PS-PA) for network sum-rate maximization in non-orthogonal multiple-access (NOMA)-based multicast cognitive radio networks is considered. Specifically, the primary and secondary transmitters communicate - via simultaneous wireless information and power transfer (SWIPT)-enabled relays - with their respective receivers, subject to minimum rate requirements. Due to the non-convexity (and hence the excessive computational-complexity) of the formulated problem, it is decoupled and solved via a low-complexity solution procedure over two stages: (1) J-PS-PA, and (2) RS. For the first stage, an iterative two-layer algorithm is devised to maximize the sum-rate over each relay, while in the second stage, the optimal relay is selected. Simulation results revealed that the proposed solution procedure efficiently yields near-optimal network sum-rate as well as being superior to other benchmark schemes, while satisfying the minimum rate requirements of all primary and secondary receivers.
KW - Cognitive radio
KW - Non-orthogonal multiple-access
KW - Power allocation
KW - Power-splitting
KW - Relay selection
KW - Sum-rate
UR - http://www.scopus.com/inward/record.url?scp=85123396410&partnerID=8YFLogxK
U2 - 10.1109/ISNCC52172.2021.9615634
DO - 10.1109/ISNCC52172.2021.9615634
M3 - Conference contribution
AN - SCOPUS:85123396410
T3 - 2021 International Symposium on Networks, Computers and Communications, ISNCC 2021
BT - 2021 International Symposium on Networks, Computers and Communications, ISNCC 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 International Symposium on Networks, Computers and Communications, ISNCC 2021
Y2 - 31 October 2021 through 2 November 2021
ER -