A tractable approach to analyzing the energy-aware two-way relaying networks in the presence of co-channel interference

Abstract

Under the impact of co-channel interference (CCI) at two source nodes and the relay, we investigate the performance of dual-hop amplify-and-forward (AF) relaying networks. In terms of energy harvesting, the power-constrained relay first scavenges energy from the received signal and CCI signals then amplifies them and forwards them to the destination. In particular, we provide closed-form expressions for outage probability and bit error ratio (BER) to easily analyse the system performance. In this paper, the impact of distinct interference power level and the number of CCIs are derived. Monte Carlo simulations are used to provide expressions related to outage probability performance. It is confirmed that energy efficiency at the relay can be enhanced due to several advantages of CCI signals which can also prolong the life expectancy of relaying systems.

Power allocation schemes for wireless powered NOMA systems with imperfect CSI: An application in multiple antenna–based relay

“…Similar to (9), the transmission power for each user is given by In traditional OMA systems, the BS spends up to four time slots to transmit both x S and x W to its user.…”

“…In traditional OMA systems, the BS spends up to four time slots to transmit both x S and x W to its user. Similar to (9), the transmission power for each user is given by NOMA, non-orthogonal multiple access; OMA, orthogonal multiple access; SU, strong user; WU, weak user where X ∈ {RW, RS}, in which RW = 2 4R W − 1 and RS = 2 4R S − 1. The achievable rate for each user in OMA is obtained as…”

“…Such new RAT called as NOMA is proposed to encounter the heterogeneous requirements including enormous connections, enhanced fairness, little latency, high reliability, and high throughput. 9 It has the ability to lengthen the energy-constrained nodes' lifetime and evade frequent recharging and battery replacement at the same time due to several drawbacks brought (eg, super-mini medical devices inserted confidential in a human body). 1 Key techniques are integrated with NOMA, including relaying networks, multiple-input multiple-output, space-time coding, beamforming, and network.…”

“…8 To 5G communications come true, energy harvesting (EH) is proposed to transfer energy to wireless devices. 9 It has the ability to lengthen the energy-constrained nodes' lifetime and evade frequent recharging and battery replacement at the same time due to several drawbacks brought (eg, super-mini medical devices inserted confidential in a human body). The radio frequency (RF) signals in the ambient wireless have emerge as a reliable energy source apart from natural ones like vibration, wave, and solar.…”

Cognitive Radio-Assisted NOMA Broadcasting for 5G Cellular V2X Communications: Model of Roadside Unit Selection and SWIPT

“…Fortunately, by harvesting the energy from the surrounding environments, wireless power can be obtained to address this problem. Radio frequency (RF) energy harvesting is applied in cognitive radio networks [24][25][26], which indicated that the energy signal can be harvested from the radio-frequency (RF) signals. Therefore, RF-based energy harvesting technique can provide flexible, sustainable and stable energy supply for wireless applications [27][28][29][30][31].…”