NOMA for Wireless-Powered Communication Networks With Buffered Sources

Ren, Jiayu; Lei, Xianfu; Diamantoulakis, Panagiotis D.; Zhou, Fuhui; Tang, Xiaohu; Dobre, Octavia A.

doi:10.1109/tvt.2021.3100333

Cited by 3 publications

(4 citation statements)

References 38 publications

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“…0, for P i = 0, 1, for P i = P max and ω i ∈ {state 1}, 10, for P i = P max and ω i ∈ {state 2}. (39) In addition, the available transmission rates selected by the users are given by the vector ρ = 1 4 , 1 2 , 1, 2 . Finally, without loss of generality, the packet size, the slot duration, and the available bandwidth are assumed to be equal to S p = 50Kbit, S d = 1 sec, and W = 50 KHz, respectively, while the users input process is assumed to be Bernoulli with rate given by the vector λ = λ, λ 2 , λ 3 .…”

Section: Simulation Resultsmentioning

confidence: 99%

“…However, the use of bufferedsources in uplink NOMA systems has not been sufficiently investigated by existing literature. More specifically, it has been solely considered by [38], [39], within the context of wireless networks with energy harvesting, based on the assumption that instantaneous channel state information is perfectly and globally known, for which outage never occurs. It also deserves to be mentioned that resource allocation is particularly challenging and conventional methods cannot be used to optimize the long-term performance when buffers are used, due to the stochastic and combinatorial nature of the corresponding problems.…”

Section: A State Of the Art And Motivationmentioning

confidence: 99%

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Next Generation Multiple Access: Performance Gains From Uplink MIMO-NOMA

Diamantoulakis

Chatzidiamantis

Moustakas

et al. 2022

IEEE Open J. Commun. Soc.

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The use of multiple-input multiple-output (MIMO) non-orthogonal multiple access (NOMA) based communication protocols is proposed and investigated for the uplink of wireless networks with buffered data-sources, which is the basis of the introduced medium access control (MAC)-layer protocol. To this end, the long-term average throughput is maximized by optimizing the set of users that transmit information at each time slot and their transmit power, the number of packets that are admitted in each user's queue, and the transmission rates, assuming that the instantaneous channel state information is not available at the transmitters. Also, considering a receiver with multiple antennas, two detection techniques are used to mitigate the interference when two users are chosen to simultaneously transmit information in the same resource block, namely successive interference cancellation (SIC) and joint decoding (JD). More specifically, the outage probability for both considered techniques is derived in closed-from, which is a prerequisite for the derivation and the optimization of the throughput. The formulated multi-dimensional long-term stochastic optimization problem is solved by using the Lyapunov framework. Finally, simulation results verify the gains by using MIMO-NOMA as the basis of the next generation multiple access and illustrate the superiority of JD compared to SIC with respect to the number of the receiver's antennas.

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Section: Simulation Resultsmentioning

confidence: 99%

Section: A State Of the Art And Motivationmentioning

confidence: 99%

Next Generation Multiple Access: Performance Gains From Uplink MIMO-NOMA

Diamantoulakis

Chatzidiamantis

Moustakas

et al. 2022

IEEE Open J. Commun. Soc.

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show abstract

“…However, in practice, the harvested energy being small and random, this limits the performance of SWIPT-NOMA systems. Therefore, the energy buffer with the harvest-store-use (HSU) architecture was considered for storing the harvested energy, which can improve the performance of self-sustaining nodes [12]- [14]. In [12], a wireless-powered cooperative NOMA relay network was considered, where the relay was provisioned with energy buffer to improve the energy efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…In [13], an adaptive multiuser cooperative NOMA scheme was studied, where the near-user was equipped with an energy buffer to harvest energy from the ambiance, thus improving the system throughput. In [14], an MISO wirelesspowered NOMA network was investigated, which considers the utilization of a data buffer and an energy storage at sources to achieve both higher sum rate and improved fairness.…”

Section: Introductionmentioning

confidence: 99%

Design and Performance Analysis of RIS-Aided DCSK-WPC System With Energy Buffer

Xie

Cai

Kaddoum³

2023

IEEE Trans. Commun.

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In this paper, we propose a simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) and energy buffer aided multiple-input single-output (MISO) simultaneous wireless information and power transfer (SWIPT) nonorthogonal multiple access (NOMA) system, which consists of a STAR-RIS, an access point (AP), and reflection users and transmission users with energy buffers. In the proposed system, the multi-antenna AP can transmit information and energy to several single-antenna reflection and transmission users simultaneously in a NOMA fashion, where the power transfer and information transmission states of the users are modeled using Markov chains. The reflection and transmission users harvest and store the energy in energy buffers as additional power supplies. The power outage probability, information outage probability, sum throughput, and joint outage probability closed-form expressions of the proposed system are derived over Nakagami-m fading channels, which are validated via simulations. Results demonstrate that the proposed system achieves better performance in comparison to the STAR-RIS aided MISO SWIPT-NOMA buffer-less, conventional RIS and energy buffer aided MISO SWIPT-NOMA, and STAR-RIS and energy buffer aided MISO SWIPT-time-division multiple access (TDMA) systems. Furthermore, a particle swarm optimization based power allocation (PSO-PA) algorithm is designed to maximize the sum throughput with a constraint on the joint outage probability. Simulation results illustrate that the proposed PSO-PA algorithm can achieve an improved sum throughput performance of the proposed system. Index Terms-Simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS), energy buffer, simultaneous wireless information and power transfer (SWIPT), non-orthogonal multiple access (NOMA), Markov chains.

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Impacts of Sensing Energy and Data Availability on Throughput of Energy Harvesting Cognitive Radio Networks

Liu

Wang

et al. 2023

IEEE Trans. Veh. Technol.

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NOMA for Wireless-Powered Communication Networks With Buffered Sources

Cited by 3 publications

References 38 publications

Next Generation Multiple Access: Performance Gains From Uplink MIMO-NOMA

Next Generation Multiple Access: Performance Gains From Uplink MIMO-NOMA

Design and Performance Analysis of RIS-Aided DCSK-WPC System With Energy Buffer

Impacts of Sensing Energy and Data Availability on Throughput of Energy Harvesting Cognitive Radio Networks

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