TY - JOUR
T1 - FTN-Assisted SWIPT-NOMA Design for IoT Wireless Networks
T2 - A Paradigm in Wireless Efficiency and Energy Utilization
AU - Xu, Hui
AU - Zhang, Chaorong
AU - Wu, Qingying
AU - Ng, Benjamin K.
AU - Lam, Chan Tong
AU - Yanikomeroglu, Halim
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - In the next generation wireless Internet of Things (IoT) networks empowered by modern communication technology, non-orthogonal multiple access (NOMA) and faster-than-Nyquist (FTN) signaling are purportedly two enabling technologies that enhance spectral efficiency (SE) without requiring additional spectrum resources. In addition, simultaneous wireless information and power transfer (SWIPT) technology enables IoT sensors and devices to harvest energy from radio frequency (RF) signals, effectively mitigating power supply limitations. This article proposes and investigates a novel SWIPT-NOMA system based on FTN technology, referred to as FTN-assisted SWIPT-NOMA, for IoT relay networks over Rayleigh fading channels. We provide a comprehensive analysis of the ergodic capacity and achievable rate of the FTN-assisted SWIPT-NOMA system applied in IoT relay networks. Specifically, we explore two distinct relaying architectures geared towards augmenting SE and energy utilization, i.e., power-splitting (PS) and time-switching (TS). We derive approximated expressions for the ergodic capacity and analyze high SNR slopes for sensor users in both architectures. Simulation results show that the ergodic capacity of the proposed system surpasses that of the conventional Nyquist-SWIPT-NOMA system, with greater capacity improvements as the FTN acceleration factor τ decreases. This highlights the substantial potential of FTN-assisted SWIPT-NOMA systems in enhancing the performance of IoT relay networks, particularly with respect to SE.
AB - In the next generation wireless Internet of Things (IoT) networks empowered by modern communication technology, non-orthogonal multiple access (NOMA) and faster-than-Nyquist (FTN) signaling are purportedly two enabling technologies that enhance spectral efficiency (SE) without requiring additional spectrum resources. In addition, simultaneous wireless information and power transfer (SWIPT) technology enables IoT sensors and devices to harvest energy from radio frequency (RF) signals, effectively mitigating power supply limitations. This article proposes and investigates a novel SWIPT-NOMA system based on FTN technology, referred to as FTN-assisted SWIPT-NOMA, for IoT relay networks over Rayleigh fading channels. We provide a comprehensive analysis of the ergodic capacity and achievable rate of the FTN-assisted SWIPT-NOMA system applied in IoT relay networks. Specifically, we explore two distinct relaying architectures geared towards augmenting SE and energy utilization, i.e., power-splitting (PS) and time-switching (TS). We derive approximated expressions for the ergodic capacity and analyze high SNR slopes for sensor users in both architectures. Simulation results show that the ergodic capacity of the proposed system surpasses that of the conventional Nyquist-SWIPT-NOMA system, with greater capacity improvements as the FTN acceleration factor τ decreases. This highlights the substantial potential of FTN-assisted SWIPT-NOMA systems in enhancing the performance of IoT relay networks, particularly with respect to SE.
KW - Faster-than-Nyquist (FTN) signaling
KW - ergodic capacity
KW - non-orthogonal multiple access (NOMA)
KW - simultaneous wireless information and power transfer (SWIPT)
UR - http://www.scopus.com/inward/record.url?scp=85215213508&partnerID=8YFLogxK
U2 - 10.1109/JSEN.2025.3525662
DO - 10.1109/JSEN.2025.3525662
M3 - Article
AN - SCOPUS:85215213508
SN - 1530-437X
JO - IEEE Sensors Journal
JF - IEEE Sensors Journal
ER -