Exploiting Cell-Free Massive MIMO for Enabling Simultaneous Wireless Information and Power Transfer

Galappaththige, Diluka Loku; Shrestha, Rajan; Baduge, Gayan Amarasuriya Aruma

doi:10.1109/tgcn.2021.3090357

Cited by 18 publications

(7 citation statements)

References 44 publications

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“…The energy consumption values of an AP, including the power consumption of circuits for each antenna and fronthaul link, were adopted from [11]. To calculate the large-scale fading coefficient, we use the following model, which includes the effects of path loss and shadow fading [55]:…”

Section: A Scenarios and Simulation Parametersmentioning

confidence: 99%

Resource Allocation in Cell-Free Massive MIMO Networks With Hybrid Energy Supplies

2023

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Cell-free massive multiple-input multiple-output (CF-mMIMO) networks were proposed as a novel architecture for radio access networks, which consists of a large number of access points (APs) over a vast area that simultaneously offer services to user equipment (UEs) in a single frequency band. However, powering a large number of APs along with impossibility or high cost of accessing the electrical grid in some scenarios remains a key challenge in unleashing the full potential of CF-mMIMO networks. One remedy is to resort to various forms of renewable energy sources and come up with AP designs equipped with energy harvesting capabilities. Regarding the unpredictable nature of renewable energy sources, energyefficient resource allocation techniques need to be developed so that APs remain operational at all times. In this paper, we envision a CF-mMIMO system in which different APs get their power from an electrical grid, a solar energy source, or a hybrid design. We aim at designing an AP-to-UE power allocation scheme with the objective of minimizing overall energy consumption from the electrical grid while satisfying the spectral efficiency (SE) constraints. Moreover, we come up with a green energy budgeting mechanism to prevent energy deficiency when solar energy is scarce. We first propose an idealistic offline formulation of the problem, and transform it into a second-order cone programming (SOCP) problem. Then, we come up with a suite of lightweight model-free myopic heuristic algorithms, and compare their performance against offline benchmark.INDEX TERMS Cell free massive MIMO, renewable energy sources, power allocation.

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Section: A Scenarios and Simulation Parametersmentioning

confidence: 99%

Resource Allocation in Cell-Free Massive MIMO Networks With Hybrid Energy Supplies

2023

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“…The performance improvement becomes more visible with the increase in the number of APs that further improves the SE. Diluka et al [167] investigated the feasibility of utilizing the harvested energy during DL WPT for UL data payload transmission in CF-mMIMO systems. Energy-rate trade-offs by considering the availability of statistical CSI and estimated DL CSI at the UEs were also quantified.…”

Section: A Literature Reviewmentioning

confidence: 99%

Next Generation Multiple Access with Cell-Free Massive MIMO

Mohammadi,

Mobini,

Ngo

et al. 2023

Preprint

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<p>To meet the unprecedented mobile traffic demands of future wireless networks, a paradigm shift from conventional cellular networks to distributed communication systems is imperative. Cell-free massive multiple-input multiple-output (CF-mMIMO) represents a practical and scalable embodiment of distributed/network MIMO systems. It inherits not only the key benefits of co-located massive MIMO systems but also the macro-diversity gains from distributed systems. This innovative architecture has demonstrated significant potential in enhancing network performance from various perspectives, outperforming co-located mMIMO and conventional small-cell systems. Moreover, CF-mMIMO offers flexibility in integration with emerging wireless technologies such as full-duplex (FD), non-orthogonal transmission schemes, millimeter-wave (mmWave) communications, ultra-reliable low-latency communication (URLLC), unmanned aerial vehicle (UAV)-aided communication, and reconfigurable intelligent surfaces (RISs). In this paper, we provide an overview of current research efforts on CF-mMIMO systems and their promising future application scenarios. We then elaborate on new requirements for CF-mMIMO networks in the context of these technological breakthroughs. We also present several current open challenges and outline future research directions aimed at fully realizing the potential of CF mMIMO systems in meeting the evolving demands of future wireless networks.</p>

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“…The reality that users of cell-edge frequently experience (𝑑 𝐴𝐵 /𝑑 0 ) 𝜖 , where 𝑑 𝐴𝐵 describes the separation between two nodes, 𝜖 represents the path-loss exponent, the reference distance is specified by 𝑑 0 , and 𝑙 is the average attenuation of the signal power at 𝑑 0 . Relay 𝑋 acts as a hybrid TS/PS EH relay in the presented approach (see [20]- [24] and the references therein for additional information on hybrid TS/PS receivers). Three subblocks of block time 𝑇 are separated.…”

Section: Introductionmentioning

confidence: 99%

Best sum-throughput evaluation of cooperative downlink transmission nonorthogonal multiple access system

Albdairat,

Wanis Zaki,

Ashour

2024

IJECE

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In cooperative simultaneous wireless information and power transfer (SWIPT) nonorthogonal multiple access (NOMA) downlink situations, the current research investigates the total throughput of users in center and edge of cell. We focus on creating ways to solve these problems because the fair transmission rate of users located in cell edge and outage performance are significant hurdles at NOMA schemes. To enhance the functionality of cell-edge users, we examine a two-user NOMA scheme whereby the cell-center user functions as a SWIPT relay using power splitting (PS) with a multiple-input single-output. We calculated the probability of an outage for both center and edge cell users, using closed-form approximation formulas and evaluate the system efficacy. The usability of cell edge users is maximized by downlink transmission NOMA (CDT-NOMA) employing a SWIPT relay that employs PS. The suggested approach calculates the ideal value of the PS coefficient to optimize the sum throughput. Compared to the noncooperative and single-input single-output NOMA systems, the best SWIPT-NOMA system provides the cell-edge user with a significant throughput gain. Applying SWIPT-based relaying transmission has no impact on the framework’s overall throughput.

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Exploiting Cell-Free Massive MIMO for Enabling Simultaneous Wireless Information and Power Transfer

Cited by 18 publications

References 44 publications

Resource Allocation in Cell-Free Massive MIMO Networks With Hybrid Energy Supplies

Resource Allocation in Cell-Free Massive MIMO Networks With Hybrid Energy Supplies

Next Generation Multiple Access with Cell-Free Massive MIMO

Best sum-throughput evaluation of cooperative downlink transmission nonorthogonal multiple access system

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