Intelligent reflecting surface-assisted cognitive radio-inspired rate-splitting multiple access systems

Peixu Liu; Gang Jing; Hongwu Liu; Liang Yang; Theodoros A. Tsiftsis

doi:10.1016/j.dcan.2022.10.032

Intelligent reflecting surface-assisted cognitive radio-inspired rate-splitting multiple access systems

Peixu Liu
, Gang Jing
, Hongwu Liu
, Liang Yang
, Theodoros A. Tsiftsis

Research output: Journal Publication › Article › peer-review

4 Citations (Scopus)

Abstract

Intelligent reflecting surface (IRS) has been widely regarded as a promising technology for configuring wireless propagation environments. In this paper, we utilize IRS to assist transmission of a secondary user (SU) in a cognitive radio-inspired rate-splitting multiple access (CR-RSMA) system in which a primary user's (PU's) quality of service (QoS) requirements must be guaranteed. Without introducing intolerable interference to deteriorate the PU's outage performance, the SU conducts rate-splitting to transmit its signal to the base-station through the direct link and IRS reflecting channels. For the IRS-assisted CR-RSMA (IRS-CR-RSMA) scheme, we derive the optimal transmit power allocation, target rate allocation, and successive interference cancellation decoding order to enhance the outage performance of the SU. The closed-form expression for the SU's outage probability achieved by the IRS-CR-RSMA scheme is derived. Various simulation results are presented to clarify the enhanced outage performance achieved by the proposed IRS-CR-RSMA scheme over the CR-RSMA scheme.

Original language	English
Pages (from-to)	655-666
Number of pages	12
Journal	Digital Communications and Networks
Volume	9
Issue number	3
DOIs	https://doi.org/10.1016/j.dcan.2022.10.032
Publication status	Published - Jun 2023
Externally published	Yes

Free Keywords

Cognitive radio
Intelligent reflecting surface (IRS)
Rate-splitting multiple access (RSMA)
Successive interference cancellation (SIC)

ASJC Scopus subject areas

Hardware and Architecture
Computer Networks and Communications

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10.1016/j.dcan.2022.10.032

Cite this

@article{fab448ebfd084b1bb3bed262514f9368,

title = "Intelligent reflecting surface-assisted cognitive radio-inspired rate-splitting multiple access systems",

abstract = "Intelligent reflecting surface (IRS) has been widely regarded as a promising technology for configuring wireless propagation environments. In this paper, we utilize IRS to assist transmission of a secondary user (SU) in a cognitive radio-inspired rate-splitting multiple access (CR-RSMA) system in which a primary user's (PU's) quality of service (QoS) requirements must be guaranteed. Without introducing intolerable interference to deteriorate the PU's outage performance, the SU conducts rate-splitting to transmit its signal to the base-station through the direct link and IRS reflecting channels. For the IRS-assisted CR-RSMA (IRS-CR-RSMA) scheme, we derive the optimal transmit power allocation, target rate allocation, and successive interference cancellation decoding order to enhance the outage performance of the SU. The closed-form expression for the SU's outage probability achieved by the IRS-CR-RSMA scheme is derived. Various simulation results are presented to clarify the enhanced outage performance achieved by the proposed IRS-CR-RSMA scheme over the CR-RSMA scheme.",

keywords = "Cognitive radio, Intelligent reflecting surface (IRS), Rate-splitting multiple access (RSMA), Successive interference cancellation (SIC)",

author = "Peixu Liu and Gang Jing and Hongwu Liu and Liang Yang and Tsiftsis, \{Theodoros A.\}",

note = "Publisher Copyright: {\textcopyright} 2022 Chongqing University of Posts and Telecommunications",

year = "2023",

month = jun,

doi = "10.1016/j.dcan.2022.10.032",

language = "English",

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pages = "655--666",

journal = "Digital Communications and Networks",

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AU - Liu, Peixu

AU - Jing, Gang

AU - Liu, Hongwu

AU - Yang, Liang

AU - Tsiftsis, Theodoros A.

PY - 2023/6

Y1 - 2023/6

N2 - Intelligent reflecting surface (IRS) has been widely regarded as a promising technology for configuring wireless propagation environments. In this paper, we utilize IRS to assist transmission of a secondary user (SU) in a cognitive radio-inspired rate-splitting multiple access (CR-RSMA) system in which a primary user's (PU's) quality of service (QoS) requirements must be guaranteed. Without introducing intolerable interference to deteriorate the PU's outage performance, the SU conducts rate-splitting to transmit its signal to the base-station through the direct link and IRS reflecting channels. For the IRS-assisted CR-RSMA (IRS-CR-RSMA) scheme, we derive the optimal transmit power allocation, target rate allocation, and successive interference cancellation decoding order to enhance the outage performance of the SU. The closed-form expression for the SU's outage probability achieved by the IRS-CR-RSMA scheme is derived. Various simulation results are presented to clarify the enhanced outage performance achieved by the proposed IRS-CR-RSMA scheme over the CR-RSMA scheme.

AB - Intelligent reflecting surface (IRS) has been widely regarded as a promising technology for configuring wireless propagation environments. In this paper, we utilize IRS to assist transmission of a secondary user (SU) in a cognitive radio-inspired rate-splitting multiple access (CR-RSMA) system in which a primary user's (PU's) quality of service (QoS) requirements must be guaranteed. Without introducing intolerable interference to deteriorate the PU's outage performance, the SU conducts rate-splitting to transmit its signal to the base-station through the direct link and IRS reflecting channels. For the IRS-assisted CR-RSMA (IRS-CR-RSMA) scheme, we derive the optimal transmit power allocation, target rate allocation, and successive interference cancellation decoding order to enhance the outage performance of the SU. The closed-form expression for the SU's outage probability achieved by the IRS-CR-RSMA scheme is derived. Various simulation results are presented to clarify the enhanced outage performance achieved by the proposed IRS-CR-RSMA scheme over the CR-RSMA scheme.

KW - Cognitive radio

KW - Intelligent reflecting surface (IRS)

KW - Rate-splitting multiple access (RSMA)

KW - Successive interference cancellation (SIC)

UR - https://www.scopus.com/pages/publications/85160778751

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DO - 10.1016/j.dcan.2022.10.032

M3 - Article

AN - SCOPUS:85160778751

SN - 2468-5925

VL - 9

SP - 655

EP - 666

JO - Digital Communications and Networks

JF - Digital Communications and Networks

IS - 3

ER -

Intelligent reflecting surface-assisted cognitive radio-inspired rate-splitting multiple access systems

Abstract

Free Keywords

ASJC Scopus subject areas

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