On the Performance of Full-Duplex Cooperative NOMA With Non-Linear EH

Abstract

This paper studies a non-linear energy harvesting (EH) enabled full-duplex (FD) cooperative non-orthogonal multiple access (C-NOMA) system, where the near user acts as an FD relay to assist the transmission from BS to far user with power-splitting (PS) protocol. We derive the close-form expressions of outage probability in this considered system, and also give the asymptotic outage probability under high signal-to-noise ratio (SNR) regime. Additionally, we obtain the optimal power allocation parameter to minimize the outage probability, and discuss the impact of self-interference (SI) on outage performance. Moreover, it is observed from simulation resultS that the presence of SI improve the outage performance, which is caused by the so-called self-energy recycling.

Integration of Cognitive Radio Technology in NOMA-Based B5G Networks: State of the Art, Challenges, and Enabling Technologies

“…As a result, understanding how and where to develop optimum cooperative NOMA SU scheduling systems is crucial. In the conventional full-duplex (FD) cooperative NOMA systems, the near user decodes the messages of the far users and thus acts as a relay to improve the QoS of the far users [112]. Accordingly, this FD cooperative communication protocol can potentially improve CR NOMA- based systems' performance, especially considering the EH circuits' nonlinearity.…”

Nonorthogonal multiple access multiple input multiple output communications with harvested energy: Performance evaluation

“…Furthermore, we appropriately characterize nlEH circuits for our model a in [13] at Site S. Note that diverse nlEH models have been proposed in many works, including [13][14][15][16][17][18][19]. Among these, the model in [13] is widely applied to performance analysis problems as its characteristic renders the analysis tractable [28,29,40].…”

“…A downlink nOe with D1 and D2 destinations was later studied, in which a transmission to D1 was aided by a relay designed by [26][27][28]. The D2 case was also considered [29][30][31][32][33], which scavenges energy from a NOMA source. The authors of [28] and [29] considered a nlEH method at a relay and presented an approximate analysis of the OP.…”

“…The D2 case was also considered [29][30][31][32][33], which scavenges energy from a NOMA source. The authors of [28] and [29] considered a nlEH method at a relay and presented an approximate analysis of the OP. Meanwhile, [26] maximized the sum rate for the lEH case, and [31] and [32] optimized a D2 site's data speed and both the entire transmission power and energy efficiency for the nlEH case, respectively.…”

“…In summary, [17, 21–38, 41, 42] studied trivial system models with single‐antenna NOMA users to exploit APP methods for performance enhancements. However, only [39] considered all multiple antenna users.…”