Outage Performance of Cooperative Underlay CR-NOMA With Imperfect CSI

Sultangali Arzykulov; Theodoros A. Tsiftsis; Galymzhan Nauryzbayev; Mohamed Abdallah

doi:10.1109/LCOMM.2018.2878730

Outage Performance of Cooperative Underlay CR-NOMA With Imperfect CSI

Sultangali Arzykulov, Theodoros A. Tsiftsis, Galymzhan Nauryzbayev, Mohamed Abdallah

Research output: Journal Publication › Article › peer-review

141 Citations (Scopus)

Abstract

In this letter, a decode-and-forward cooperative underlay cognitive radio (CR) non-orthogonal multiple access (NOMA) network is studied. Exact closed-form expressions for the outage probability (OP) of two NOMA secondary destination users (U₁ and U₂) are derived in the case of imperfect channel state information. Then, we find optimal power allocation factors for different distances of U₁ to satisfy the OP fairness for both users. Moreover, the proposed system model shows the superiority of the CR-NOMA compared with cooperative orthogonal multiple access. The derived analytical expressions are corroborated through Monte Carlo simulations.

Original language	English
Article number	8515274
Pages (from-to)	176-179
Number of pages	4
Journal	IEEE Communications Letters
Volume	23
Issue number	1
DOIs	https://doi.org/10.1109/LCOMM.2018.2878730
Publication status	Published - Jan 2019
Externally published	Yes

Keywords

Cognitive radio (CR)
decode-and-forward (DF)
non-orthogonal multiple access (NOMA)
outage probability (OP)

ASJC Scopus subject areas

Modelling and Simulation
Computer Science Applications
Electrical and Electronic Engineering

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10.1109/LCOMM.2018.2878730

Cite this

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title = "Outage Performance of Cooperative Underlay CR-NOMA With Imperfect CSI",

abstract = "In this letter, a decode-and-forward cooperative underlay cognitive radio (CR) non-orthogonal multiple access (NOMA) network is studied. Exact closed-form expressions for the outage probability (OP) of two NOMA secondary destination users (U1 and U2) are derived in the case of imperfect channel state information. Then, we find optimal power allocation factors for different distances of U1 to satisfy the OP fairness for both users. Moreover, the proposed system model shows the superiority of the CR-NOMA compared with cooperative orthogonal multiple access. The derived analytical expressions are corroborated through Monte Carlo simulations.",

keywords = "Cognitive radio (CR), decode-and-forward (DF), non-orthogonal multiple access (NOMA), outage probability (OP)",

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doi = "10.1109/LCOMM.2018.2878730",

language = "English",

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AU - Arzykulov, Sultangali

AU - Tsiftsis, Theodoros A.

AU - Nauryzbayev, Galymzhan

AU - Abdallah, Mohamed

PY - 2019/1

Y1 - 2019/1

N2 - In this letter, a decode-and-forward cooperative underlay cognitive radio (CR) non-orthogonal multiple access (NOMA) network is studied. Exact closed-form expressions for the outage probability (OP) of two NOMA secondary destination users (U1 and U2) are derived in the case of imperfect channel state information. Then, we find optimal power allocation factors for different distances of U1 to satisfy the OP fairness for both users. Moreover, the proposed system model shows the superiority of the CR-NOMA compared with cooperative orthogonal multiple access. The derived analytical expressions are corroborated through Monte Carlo simulations.

AB - In this letter, a decode-and-forward cooperative underlay cognitive radio (CR) non-orthogonal multiple access (NOMA) network is studied. Exact closed-form expressions for the outage probability (OP) of two NOMA secondary destination users (U1 and U2) are derived in the case of imperfect channel state information. Then, we find optimal power allocation factors for different distances of U1 to satisfy the OP fairness for both users. Moreover, the proposed system model shows the superiority of the CR-NOMA compared with cooperative orthogonal multiple access. The derived analytical expressions are corroborated through Monte Carlo simulations.

KW - Cognitive radio (CR)

KW - decode-and-forward (DF)

KW - non-orthogonal multiple access (NOMA)

KW - outage probability (OP)

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JO - IEEE Communications Letters

JF - IEEE Communications Letters

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M1 - 8515274

ER -

Outage Performance of Cooperative Underlay CR-NOMA With Imperfect CSI

Abstract

Keywords

ASJC Scopus subject areas

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