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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Energy Efficient Uplink Transmission in Cooperative mmWave NOMA Networks with Wireless Power Transfer
AU - Khazali, A.
AU - Tarchi, D.
AU - G. Shayesteh, M.
AU - Kalbkhani, H.
AU - Bozorgchenani, A.
N1 - ©2021 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
PY - 2022/1/30
Y1 - 2022/1/30
N2 - In 5G wireless networks, cooperative non-orthogonal multiple access (NOMA) and wireless power transfer (WPT) are efficient ways to improve the spectral efficiency (SE) and energy efficiency (EE). In this paper, a new cooperative NOMA scheme with WPT is proposed, where EE optimization with a constrained maximum transmit power and minimum required SE is considered for the user grouping and transmit power allocation of users. We obtain a sub-optimal solution by decoupling the original problem in two sub-problems: an iterative algorithm is considered for the user grouping, while, in addition, we utilize the Bat Algorithm (BA) for solving the power allocation problem, where BA was proved to be able to achieve a higher accuracy and efficiency with respect to other meta-heuristic algorithms. Furthermore, to validate the performance of the proposed system, analytical expressions for the energy outage probability and outage probability of users are derived, confirming the effectiveness of the simulation results. It is demonstrated that the proposed cooperative NOMA with WPT offers a considerable improvement in terms of SE and EE of the network compared to other methods. Finally, the effectiveness of BA in solving the EE optimization problem is demonstrated through a high convergence speed by comparing it with other methods.
AB - In 5G wireless networks, cooperative non-orthogonal multiple access (NOMA) and wireless power transfer (WPT) are efficient ways to improve the spectral efficiency (SE) and energy efficiency (EE). In this paper, a new cooperative NOMA scheme with WPT is proposed, where EE optimization with a constrained maximum transmit power and minimum required SE is considered for the user grouping and transmit power allocation of users. We obtain a sub-optimal solution by decoupling the original problem in two sub-problems: an iterative algorithm is considered for the user grouping, while, in addition, we utilize the Bat Algorithm (BA) for solving the power allocation problem, where BA was proved to be able to achieve a higher accuracy and efficiency with respect to other meta-heuristic algorithms. Furthermore, to validate the performance of the proposed system, analytical expressions for the energy outage probability and outage probability of users are derived, confirming the effectiveness of the simulation results. It is demonstrated that the proposed cooperative NOMA with WPT offers a considerable improvement in terms of SE and EE of the network compared to other methods. Finally, the effectiveness of BA in solving the EE optimization problem is demonstrated through a high convergence speed by comparing it with other methods.
KW - 5G mobile communication
KW - Array signal processing
KW - Bat Algorithm
KW - Cooperative NOMA
KW - Energy efficiency
KW - Energy harvesting
KW - mmWave network
KW - NOMA
KW - Resource management
KW - Spectral efficiency
KW - Uplink
KW - Wireless communication
KW - Wireless power transfer
KW - 5G mobile communication systems
KW - Array processing
KW - Constrained optimization
KW - Cooperative communication
KW - Energy transfer
KW - Heuristic algorithms
KW - Iterative methods
KW - Millimeter waves
KW - Outages
KW - Bat algorithms
KW - Cooperative non-orthogonal multiple access
KW - Mm waves
KW - Mmwave network
KW - Multiple access
KW - Non-orthogonal
KW - Non-orthogonal multiple access
KW - Spectral efficiencies
KW - Wireless communications
U2 - 10.1109/TVT.2021.3124076
DO - 10.1109/TVT.2021.3124076
M3 - Journal article
VL - 71
SP - 391
EP - 405
JO - IEEE Transactions on Vehicular Technology
JF - IEEE Transactions on Vehicular Technology
SN - 0018-9545
IS - 1
ER -