Reference : Backscatter-Aided NOMA V2X Communication under Channel Estimation Errors |
Scientific congresses, symposiums and conference proceedings : Unpublished conference | |||
Engineering, computing & technology : Electrical & electronics engineering | |||
Security, Reliability and Trust | |||
http://hdl.handle.net/10993/51358 | |||
Backscatter-Aided NOMA V2X Communication under Channel Estimation Errors | |
English | |
Khan, Wali Ullah ![]() | |
Jamshed, Muhammad Ali ![]() | |
Mahmood, Asad ![]() | |
Lagunas, Eva ![]() | |
Chatzinotas, Symeon ![]() | |
Ottersten, Björn ![]() | |
20-Jun-2022 | |
Khan, Wali Ullah, et al. "Backscatter-aided NOMA V2X communication under channel estimation errors." IEEE Vehicular Technology Conference (VTC2022-Spring), Helsinki Finland, 2022. | |
Yes | |
International | |
The 2022 IEEE 95th Vehicular Technology Conference: VTC2022-Spring | |
19-06-2022 to 22-06-2022 | |
IEEE | |
Helsinki | |
Finland | |
[en] Backscatter Communications ; Non-orthogonal Multiple Access ; Vehicle to Everything | |
[en] 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. | |
Interdisciplinary Centre for Security, Reliability and Trust (SnT), University of Luxembourg | |
FNR – Luxembourg National Research Fund – CORE Program | |
RISOTTI - Reconfigurable Intelligent Surfaces for Smart Cities | |
Researchers ; Professionals ; Students ; General public ; Others | |
http://hdl.handle.net/10993/51358 | |
10.48550/arXiv.2202.01586 | |
https://arxiv.org/abs/2202.01586 | |
The original publication is available on arXiv | |
Not available | |
FnR ; FNR14773976 > Bjorn Ottersten > RISOTTI > Reconfigurable Intelligent Surfaces For Smart Cities > 01/06/2021 > 31/05/2024 > 2020 |
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