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Cited by 77Advanced Wireless Communication TechnologiesAdvanced Wireless Network OptimizationVehicular Ad Hoc Networks (VANETs)

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Robust Resource Allocation With Imperfect Channel Estimation in NOMA-Based Heterogeneous Vehicular Networks

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Guo, Shengjie, Zhou, Xiangwei·2019·IEEE Transactions on Communications
DOI 10.1109/tcomm.2018.2885999
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Abstract

In heterogeneous vehicular networks, non-orthogonal multiple access (NOMA) with effective resource allocation improves spectrum efficiency by allowing multiple users to share the same channel. However, channel estimation errors caused by high mobility in vehicular networks affect system robustness and link reliability. As a result, resource allocation in high-mobility scenarios is a challenging issue. In this paper, robust resource allocation is studied to improve both the throughput performance and reliability of NOMA-based heterogeneous vehicular networks. A cascaded Hungarian channel assignment algorithm is proposed to simplify the formulated resource allocation problem with reliability requirements into a robust power allocation problem with chance constraints. With the approximation of non-central Chi-square distribution, the chance constraints are transformed into deterministic constraints. Furthermore, the optimal power allocation for the transformed problem is obtained in consideration of the requirements in NOMA. Simulation results illustrate the effectiv- eness of the proposed robust resource allocation scheme and its improvement over existing schemes.

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Metadata

Authors
Guo, S., & Zhou, X.
Affiliations
Louisiana State University (US)
ORCID
Venue
IEEE Transactions on Communications
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Published
2019-03
Volume
67
Issue
3
Pages
2321-2332
ISSN
  • 0090-6778 (ISSN-L)
  • 1558-0857
DOI
10.1109/tcomm.2018.2885999
OpenAlex
W2904306963
Cited by
77
References
1
Citations by year
2026: 2 · 2025: 6 · 2024: 9 · 2023: 8 · 2022: 13 · 2021: 17 · 2020: 17 · 2019: 5
FWCI
3.73
Type
journal article
Language
en
Open access
Licence
Locations
  • IEEE Transactions on Communications (publishedVersion)
  • Civil War Book Review (submittedVersion)
Funders
National Science Foundation (1560437)
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Wireless Communication Technologies
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Wireless Network Optimization
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Vehicular Ad Hoc Networks (VANETs)
Keywords
non-orthogonal multiple access, heterogeneous vehicular networks, robust resource allocation, channel estimation error, power allocation, chance constraints, channel assignment, noncentral chi-square distribution, high mobility

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Guo, S., & Zhou, X. (2019). Robust Resource Allocation With Imperfect Channel Estimation in NOMA-Based Heterogeneous Vehicular Networks. IEEE Transactions on Communications. https://doi.org/10.1109/tcomm.2018.2885999