Full-Duplex Relay Selection in Cognitive Underlay Networks

Khafagy, Mohammad Galal; Alouini, Mohamed‐Slim; Aı̈ssa, Sonia

doi:10.1109/tcomm.2018.2840705

Cited by 17 publications

(7 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In [33], an FD cooperative CR network with energy access points that provides wireless charge to SU for transmission is studied. In [34], the performance of an FD relay selection underlay cognitive network with residual self-interference (RSI) is investigated over Nakagami-m fading channels. Ali et.…”

Section: A Related Workmentioning

confidence: 99%

On Performance of a SWIPT Enabled FD CRN With HIs and Imperfect SIC Over α–μ Fading Channel

Kumar

Singya

Krejcar

et al. 2023

IEEE Trans. Cogn. Commun. Netw.

View full text Add to dashboard Cite

This paper investigates the performance of overlay full-duplex cooperative cognitive radio network in the presence of imperfect self interference cancellation over generalized α − µ fading channels effected by nonlinearity of the propagation medium. In practice, physical transceivers create distortion which degrades the performance, hence, the impact of transceiver hardware impairments (HIs) is considered. To overcome the energy constraint problem, a hybrid simultaneous wireless information and power transfer receiver is adopted that includes both the time switching and the power splitting protocols. To improve reliability of the communication link, we employ a hybrid relaying protocol that combines both the decode-and-forward and amplify-andforward relaying protocols. The closed-form expressions of outage probability and asymptotic outage probability are derived for both the primary and the secondary networks over α − µ fading channels. The diversity order, throughput, and energy efficiency of the considered network are derived. Optimal values of time switching factor is obtained for which the considered network exhibits optimum outage probability, maximum throughput and energy efficiency. Further, optimal value of power splitting factor is obtained for which the considered network shows maximum throughput and energy efficiency. Finally, the Monte-Carlo simulations validate correctness of the derived closed-form expressions.

show abstract

Section: A Related Workmentioning

confidence: 99%

On Performance of a SWIPT Enabled FD CRN With HIs and Imperfect SIC Over α–μ Fading Channel

Kumar

Singya

Krejcar

et al. 2023

IEEE Trans. Cogn. Commun. Netw.

View full text Add to dashboard Cite

show abstract

“…Since there is no direct path between PS and PU 2 , SS forwards the information to PU 2 and SU with the assumption that the interference power at PU 1 is tolerable. Further, to improve the NPU ( PU 1 ) performance, the optimal SS is chosen to forward the information to PU 2 using opportunistic SS selection protocol 33 . Due to the energy limited constraint in optimal SS , transceiver operation is carried out in two stages.…”

Section: System Modelmentioning

confidence: 99%

Outage analysis of cognitive non‐orthogonal multiple access downlink system with secondary source selection in Nakagami‐m fading environment

Sashiganth

S.J²,

2021

Int J Communication

View full text Add to dashboard Cite

Summary Cognitive inspired non‐orthogonal multiple access (Cognitive‐NOMA) technique allows multiple primary and secondary users to utilize the same time and frequency resources to explore the reliability and spectral efficient requirements of 5G communication networks. In this paper Cognitive‐NOMA downlink system with multiple secondary source (SS) nodes is proposed. An optimal SS node is selected based on the signal to interference plus noise ratio (SINR) requirements of both near and far primary users and the secondary user node. Each optimal SS node incorporates simultaneous wireless information and power transfer (SWIPT) and full‐duplex technique to harvest energy and transceiver operation. Analytical outage probability expressions of the proposed system are derived over Nakagami‐m fading environment with the assumption that SS transmission links are correlated. Numerical results infer that the outage performance of the proposed system depends on the number of SS nodes, self‐interference at the SS node, and the SINR constraint for the selection of optimal SS node.

show abstract

“…However, in order to assist the far user, the near user also acts as a relay, using mixed VLC/RF DF relaying protocol. Also, considering that VLC is transparent to the communication at the RF band, U 1 operates in full-duplex mode [25], i.e., it simultaneously receives and transmits information. In practice, the received symbol by U 2 at the RF band is delayed by one timeslot, i.e, during timeslot j, U 2 receives the symbols x 2,j and x 2,j−1 by the VLC AP and U 1 , respectively.…”

Section: System Modelmentioning

confidence: 99%

Hybrid Lightwave/RF Cooperative NOMA Networks

Xiao

Diamantoulakis

Fang

et al. 2020

IEEE Trans. Wireless Commun.

View full text Add to dashboard Cite

We propose an indoor lightwave downlink wireless communication network with non-orthogonal multiple access (NOMA), consisting of one visible light communication (VLC) access point (AP) and a pair of randomly located users. Although both users can directly receive information from the AP, the performance of the far user is degraded compared to the near one, due to the asymmetrical channel gains. Thus, we propose user cooperation to improve the performance of the far user, by using mixed VLC/RF relaying in parallel with the wireless optical direct link. In order to efficiently exploit the advantage of this hybrid system, the concept of cross-band selection combining (CBSC) is introduced, while its performance is thoroughly investigated and compared to appropriate baselines, according to which the far user is continuously served by either the mixed VLC/RF or the direct VLC link. To this end, we derive closed-form expressions for the outage probability of each user as well as the system sum throughput. Finally, simulation results are provided to verify the effectiveness of the proposed scheme and the accuracy of the corresponding analysis. Index Terms-Lightwave, hybrid system, decode-and-forward relaying, non-orthogonal multiple access (NOMA), cross band selection combining (CBSC).

show abstract

Full-Duplex Relay Selection in Cognitive Underlay Networks

Cited by 17 publications

References 41 publications

On Performance of a SWIPT Enabled FD CRN With HIs and Imperfect SIC Over α–μ Fading Channel

On Performance of a SWIPT Enabled FD CRN With HIs and Imperfect SIC Over α–μ Fading Channel

Outage analysis of cognitive non‐orthogonal multiple access downlink system with secondary source selection in Nakagami‐m fading environment

Hybrid Lightwave/RF Cooperative NOMA Networks

Contact Info

Product

Resources

About