Energy Harvesting Enabled NOMA Systems With Full-Duplex Relaying

Abstract

This paper investigates an integrated wireless communication system including non-orthogonal multiple access, fullduplex relaying, and energy harvesting techniques (named as EH-FD-NOMA). In this scheme, an energy-limited full-duplex relay harvests energy from a source at the first stage. Then, the relay detects the superimposed signal from the source and transmits the decoded signal to destination. Closed-form outage probabilities and ergodic rates at the relay and destination are derived. Numerical results verify the analytical results and show the superior performance of the EH-FD-NOMA if compared to its counterparts.

Outage analysis of SWIPT‐based full‐duplex cognitive NOMA downlink system over Nakagami‐m fading channels

“…Considering user-relaying scenario, the outage performance is analyzed for energy-harvesting FD-NOMA system with time switching mechanism in Rayleigh fading environment. 24 With the existence of a direct path to the FU, the outage performance is analyzed for SWIPT-NOMA system with power splitting mechanism. 25 Outage analysis of downlink FD-NOMA relay networks with energy harvesting over Nakagami-m fading channel is investigated.…”

“…It is shown that the performance of the system depends on fading and harvesting parameters. Considering user‐relaying scenario, the outage performance is analyzed for energy‐harvesting FD‐NOMA system with time switching mechanism in Rayleigh fading environment . With the existence of a direct path to the FU, the outage performance is analyzed for SWIPT‐NOMA system with power splitting mechanism .…”

Performance Analysis of Energy Harvesting-Based Full-Duplex Decode-and-Forward Vehicle-to-Vehicle Relay Networks with Nonorthogonal Multiple Access

“…In the literature, there have been several studies on the combination of EH, FD, and NOMA [5,9,[15][16][17]. In [9], the authors considered a down-link NOMA system, where the source node transmits two signals to two users via a FD decode-and-forward relay node.…”

“…e authors successfully derived OP expressions for both users and studied the impact of imperfect self-interference and EH circuit on the system performance. Wang and Wu [15] and Guo et al [16] investigated a similar system where the strong user (which is an EH-FD relay node) harvested energy from the source node for transmitting information messages. Furthermore, [17] extended this model to M relay nodes and K users.…”

“…Furthermore, [17] extended this model to M relay nodes and K users. Different from [5,9,15,16], the work in [17] investigated the case that the users harvest energy from the source. In summary, the previous studies considered either only FD relay (strong user) or weak user can harvest energy from the source.…”