Secrecy analysis of uplink IM-OFDMA systems in the presence of IQ imbalance

Ozgur Alaca; Saud Althunibat; Serhan Yarkan; Scott L. Miller; Khalid A. Qaraqe

doi:10.1109/TVT.2023.3285209

Secrecy analysis of uplink IM-OFDMA systems in the presence of IQ imbalance

Ozgur Alaca^*, Saud Althunibat, Serhan Yarkan, Scott L. Miller, Khalid A. Qaraqe

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

This article introduces the secrecy analysis of the index modulation-based orthogonal frequency division multiple access (IM-OFDMA) schemes by considering the in-phase and quadrature imbalance (IQI) presence at the users' RF front ends. In particular, by assuming the existence of an eavesdropper, the secrecy performance of the considered uplink multiple-Access system is investigated through the strictly positive secrecy capacity and secrecy outage probability, and closed-form expressions are derived for both quantities. Moreover, the secrecy performance is conducted regarding IQI compensation based on a preamble-based estimation method. Further, analysis of the impact of the different parameters of IM-OFDMA, IQI, and estimation method is included via analytical and simulation-based results. The results reveal that IM-OFDMA is more reliable in secrecy performance than OFDMA, regardless of whether IQI is present. Also, IQI compensation can lead to a better secrecy performance compared to the case of no IQI.

Original language	English
Pages (from-to)	14411-14425
Number of pages	15
Journal	IEEE Transactions on Vehicular Technology
Volume	72
Issue number	11
DOIs	https://doi.org/10.1109/TVT.2023.3285209
Publication status	Published - 1 Nov 2023
Externally published	Yes

Keywords

IM-OFDMA
IQ imbalances
Physical layer security
Secrecy outage probability
Strictly positive secrecy capacity

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10.1109/TVT.2023.3285209

Cite this

@article{54e43f35ce2048189bf06eb5996c969d,

title = "Secrecy analysis of uplink IM-OFDMA systems in the presence of IQ imbalance",

abstract = "This article introduces the secrecy analysis of the index modulation-based orthogonal frequency division multiple access (IM-OFDMA) schemes by considering the in-phase and quadrature imbalance (IQI) presence at the users' RF front ends. In particular, by assuming the existence of an eavesdropper, the secrecy performance of the considered uplink multiple-Access system is investigated through the strictly positive secrecy capacity and secrecy outage probability, and closed-form expressions are derived for both quantities. Moreover, the secrecy performance is conducted regarding IQI compensation based on a preamble-based estimation method. Further, analysis of the impact of the different parameters of IM-OFDMA, IQI, and estimation method is included via analytical and simulation-based results. The results reveal that IM-OFDMA is more reliable in secrecy performance than OFDMA, regardless of whether IQI is present. Also, IQI compensation can lead to a better secrecy performance compared to the case of no IQI.",

keywords = "IM-OFDMA, IQ imbalances, Physical layer security, Secrecy outage probability, Strictly positive secrecy capacity",

author = "Ozgur Alaca and Saud Althunibat and Serhan Yarkan and Miller, {Scott L.} and Qaraqe, {Khalid A.}",

note = "Publisher Copyright: {\textcopyright} 1967-2012 IEEE.",

year = "2023",

month = nov,

day = "1",

doi = "10.1109/TVT.2023.3285209",

language = "English",

volume = "72",

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journal = "IEEE Transactions on Vehicular Technology",

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T1 - Secrecy analysis of uplink IM-OFDMA systems in the presence of IQ imbalance

AU - Alaca, Ozgur

AU - Althunibat, Saud

AU - Yarkan, Serhan

AU - Miller, Scott L.

AU - Qaraqe, Khalid A.

PY - 2023/11/1

Y1 - 2023/11/1

N2 - This article introduces the secrecy analysis of the index modulation-based orthogonal frequency division multiple access (IM-OFDMA) schemes by considering the in-phase and quadrature imbalance (IQI) presence at the users' RF front ends. In particular, by assuming the existence of an eavesdropper, the secrecy performance of the considered uplink multiple-Access system is investigated through the strictly positive secrecy capacity and secrecy outage probability, and closed-form expressions are derived for both quantities. Moreover, the secrecy performance is conducted regarding IQI compensation based on a preamble-based estimation method. Further, analysis of the impact of the different parameters of IM-OFDMA, IQI, and estimation method is included via analytical and simulation-based results. The results reveal that IM-OFDMA is more reliable in secrecy performance than OFDMA, regardless of whether IQI is present. Also, IQI compensation can lead to a better secrecy performance compared to the case of no IQI.

AB - This article introduces the secrecy analysis of the index modulation-based orthogonal frequency division multiple access (IM-OFDMA) schemes by considering the in-phase and quadrature imbalance (IQI) presence at the users' RF front ends. In particular, by assuming the existence of an eavesdropper, the secrecy performance of the considered uplink multiple-Access system is investigated through the strictly positive secrecy capacity and secrecy outage probability, and closed-form expressions are derived for both quantities. Moreover, the secrecy performance is conducted regarding IQI compensation based on a preamble-based estimation method. Further, analysis of the impact of the different parameters of IM-OFDMA, IQI, and estimation method is included via analytical and simulation-based results. The results reveal that IM-OFDMA is more reliable in secrecy performance than OFDMA, regardless of whether IQI is present. Also, IQI compensation can lead to a better secrecy performance compared to the case of no IQI.

KW - IM-OFDMA

KW - IQ imbalances

KW - Physical layer security

KW - Secrecy outage probability

KW - Strictly positive secrecy capacity

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DO - 10.1109/TVT.2023.3285209

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SN - 0018-9545

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JO - IEEE Transactions on Vehicular Technology

JF - IEEE Transactions on Vehicular Technology

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ER -

Secrecy analysis of uplink IM-OFDMA systems in the presence of IQ imbalance

Abstract

Keywords

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EX-QNRF-NPRPC-8: ReSolVE (Resilient Solutions for Vulnerabilities and Emergencies): An Effective National Risk Management Plan for Qatar

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Secrecy analysis of uplink IM-OFDMA systems in the presence of IQ imbalance

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Keywords

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EX-QNRF-NPRPC-8: ReSolVE (Resilient Solutions for Vulnerabilities and Emergencies): An Effective National Risk Management Plan for Qatar

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