RT Journal Article
A1 Huu Q. Tran
A1 Tien-Tung Nguyen
A1 Ca V. Phan
A1 Quoc-Tuan Vien

PB iet
T1 Power-splitting relaying protocol for wireless energy harvesting and information processing in NOMA systems
JN IET Communications
VO 13
IS 14
SP 2132
OP 2140
AB Non-orthogonal multiple access (NOMA) along with cooperative communications have been recognised as promising candidates for the fifth generation (5G) wireless networks and have attracted many researchers. Every networked device however has its own limited power supply. To this extent, this study investigates a power-splitting relaying (PSR) protocol for wireless energy harvesting (EH) and information processing in the NOMA systems to prolong the lifetime of the energy constrained relay nodes in wireless networks so as to avail the ambient radio-frequency (RF) signal as well as to simultaneously harvest the energy and process the information. Decode-and-forward relaying is employed at the relay node where the energy from the received RF signal is harvested and exploited to forward the information to the destination. Specifically, the outage probability and ergodic rate of the PSR protocol are derived to realise the impacts of EH time, EH efficiency, power splitting ratio, source data rate, and the distance between nodes. It is shown that an outperformance in terms of the energy efficiency is achieved with an increased EH efficiency and the employment of the NOMA when compared to the conventional orthogonal multiple access.
K1 fifth generation wireless networks
K1 relay node
K1 wireless energy harvesting
K1 PSR protocol
K1 EH time
K1 power splitting ratio
K1 conventional orthogonal multiple access
K1 received RF signal
K1 -forward relaying
K1 promising candidates
K1 power-splitting relaying protocol
K1 networked device
K1 nonorthogonal multiple access
K1 ambient radio-frequency signal
K1 increased EH efficiency results
K1 power supply
K1 energy efficiency
K1 energy-constrained relay nodes
K1 information processing
K1 NOMA systems
DO https://doi.org/10.1049/iet-com.2018.5897
UL https://digital-library.theiet.org/;jsessionid=3m5nkmj2det0e.x-iet-live-01content/journals/10.1049/iet-com.2018.5897
LA English
SN 1751-8628
YR 2019
OL EN