The DOI matches its Crossref record; 27 of the 31 references it cites were found in a registry or an index.
Backscatter-Aided NOMA V2X Communication under Channel Estimation Errors
Open accessAbstract
Backscatter communications (BC) has emerged as a promising technology for providing low-powered transmissions in nextG (i.e., beyond 5G) wireless networks. The fundamental idea of BC is the possibility of communications among wireless devices by using the existing ambient radio frequency signals. Non-orthogonal multiple access (NOMA) has recently attracted significant attention due to its high spectral efficiency and massive connectivity. This paper proposes a new optimization framework to minimize total transmit power of BC-NOMA cooperative vehicle-to-everything networks (V2XneT) while ensuring the quality of services. More specifically, the base station (BS) transmits a superimposed signal to its associated roadside units (RSUs) in the first time slot. Then the RSUs transmit the superimposed signal to their serving vehicles in the second time slot exploiting decode and forward protocol. A backscatter device (BD) in the coverage area of RSU also receives the superimposed signal and reflect it towards vehicles by modulating own information. Thus, the objective is to simultaneously optimize the transmit power of BS and RSUs along with reflection coefficient of BDs under perfect and imperfect channel state information. The problem of energy efficiency is formulated as non-convex and coupled on multiple optimization variables which makes it very complex and hard to solve. Therefore, we first transform and decouple the original problem into two sub-problems and then employ iterative sub-gradient method to obtain an efficient solution. Simulation results demonstrate that the proposed BC-NOMA V2XneT provides high energy efficiency than the conventional NOMA V2XneT without BC.
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“A geographically-based novel scheduling scheme [92] and a new optimization framework [93] are introduced to optimize the synchronization resource coordination and minimize the total transmission power.”
From Vehicle-to-Everything Communication in Intelligent Connected Vehicles: A Survey and Taxonomy (2025) · cites this paper as [93]
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Cites
Boyd, S., & Vandenberghe, L. (2004) · doi:10.1017/cbo9780511804441 · Cited by 56,601
Simultaneous Wireless Information and Power Transfer (SWIPT): Recent Advances and Future Challenges
Ponnimbaduge Perera, T. D., Jayakody, D. N. K., Sharma, S. K., Chatzinotas, S., & Li, J. (2018) · IEEE Communications Surveys & Tutorials · doi:10.1109/comst.2017.2783901 · Cited by 920
Self-citationNoor-A-Rahim, M., Liu, Z., Lee, H., Khyam, M. O., He, J., Pesch, D., Moessner, K., Saad, W., & Poor, H. V. (2022) · Proceedings of the IEEE · doi:10.1109/jproc.2022.3173031 · Cited by 737
Challenges and Solutions for Cellular Based V2X Communications
Gyawali, S., Xu, S., Qian, Y., & Hu, R. Q. (2020) · IEEE Communications Surveys & Tutorials · doi:10.1109/comst.2020.3029723 · Cited by 492
Wang, J., Zhu, K., & Hossain, E. (2021) · IEEE Transactions on Green Communications and Networking · doi:10.1109/tgcn.2021.3127923 · Cited by 220
Developing NOMA to Next Generation Multiple Access: Future Vision and Research Opportunities
Liu, Y., Yi, W., Ding, Z., Liu, X., Dobre, O. A., & Al‐Dhahir, N. (2022) · IEEE Wireless Communications · doi:10.1109/mwc.007.2100553 · Cited by 209
Liu, G., Wang, Z., Hu, J., Ding, Z., & Fan, P. (2019) · IEEE Internet of Things Journal · doi:10.1109/jiot.2019.2908415 · Cited by 172
Physical Layer Security of Cognitive Ambient Backscatter Communications for Green Internet-of-Things
Li, X., Zheng, Y., Khan, W. U., Zeng, M., Li, D., Ragesh, G. K., & Li, L. (2021) · IEEE Transactions on Green Communications and Networking · doi:10.1109/tgcn.2021.3062060 · Cited by 162
Self-citationEnergy-Efficient Resource Allocation for 6G Backscatter-Enabled NOMA IoV Networks
Khan, W. U., Javed, M. A., Nguyen, T. N., Khan, S., & ElHalawany, B. M. (2021) · IEEE Transactions on Intelligent Transportation Systems · doi:10.1109/tits.2021.3110942 · Cited by 151
Self-citationJoint Spectral and Energy Efficiency Optimization for Downlink NOMA Networks
Khan, W. U., Jameel, F., Ristaniemi, T., Khan, S., Sidhu, G. A. S., & Liu, J. (2019) · IEEE Transactions on Cognitive Communications and Networking · doi:10.1109/tccn.2019.2945802 · Cited by 118
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4 of the 31 references couldn’t be matched to a known paper.
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Vehicle-to-Everything Communication in Intelligent Connected Vehicles: A Survey and Taxonomy
Zhang, X., Li, J., Zhou, J., Zhang, S., Wang, J., Yuan, Y., Liu, J., & Li, J. (2025) · Automotive Innovation · doi:10.1007/s42154-024-00310-2 · Cited by 103
Khan, W. U., Jamshed, M. A., Lagunas, E., Chatzinotas, S., Li, X., & Ottersten, B. (2022) · IEEE Transactions on Intelligent Transportation Systems · doi:10.1109/tits.2022.3187567 · Cited by 89
Self-citationKim, M., Oh, I., Yim, K., Sahlabadi, M., & Shukur, Z. (2023) · IEEE Access · doi:10.1109/access.2023.3348409 · Cited by 82
Cooperative Power-Domain NOMA Systems: An Overview
Ghous, M., Hassan, A. K., Abbas, Z. H., Abbas, G., Hussien, A. A., & Baker, T. (2022) · Sensors · doi:10.3390/s22249652 · Cited by 49
A Comprehensive Survey on NOMA-Based Backscatter Communication for IoT Applications
Mondal, S., Bepari, D., Chandra, A., Singh, K. K., Li, C., & Ding, Z. (2025) · IEEE Internet of Things Journal · doi:10.1109/jiot.2025.3548581 · Cited by 44
Metadata
- Authors
- Khan, W. U., Jamshed, M. A., Mahmood, A., Lagunas, E., Chatzinotas, S., & Ottersten, B.
- Affiliations
- University of Luxembourg (LU)
- University of Glasgow (GB)
- University of Luxembourg,Interdisciplinary Centre for Security, Reliability and Trust (SnT)
- Venue
- 2022 IEEE 95th Vehicular Technology Conference: (VTC2022-Spring)
- Publisher
- IEEE
- Published
- 2022-06
- Pages
- 1-6
- ISSN
- 1090-3038 (ISSN-L)
- OpenAlex
- W4293057920
- Cited by
- 14
- References
- 31
- Citations by year
- 2025: 4 · 2024: 2 · 2023: 3 · 2022: 5
- FWCI
- 5.66
- Type
- conference paper
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- IEEE Vehicular Technology Conference (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- Open Repository and Bibliography (University of Luxembourg) (submittedVersion, other-oa)
- arXiv (Cornell University)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Wireless Communication Technologies
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Energy Harvesting in Wireless Networks
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Vehicular Ad Hoc Networks (VANETs)
- Keywords
- backscatter communication, non-orthogonal multiple access, vehicle-to-everything communication, channel estimation error, energy efficiency, transmit power minimization, decode-and-forward relaying, roadside units, reflection coefficient optimization, imperfect channel state information, cooperative vehicular networks
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