Distributed Resource Allocation for Energy Efficiency in OFDMA Multicell Networks With Wireless Power Transfer

Chang, Zheng; Wang, Zhongyu; Guo, Xijuan; Yang, Chungang; Han, Zhu; Ristaniemi, Tapani

doi:10.1109/jsac.2018.2872398

Cited by 44 publications

(20 citation statements)

References 29 publications

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“…The ADMM algorithm divides the original problem into two or more branches by introducing auxiliary variables to perform alternate optimization. Refer to [36]- [38], this paper created a new variablě P UL as a copy of P UL , similarly,F LC corresponds to F LC , which makes it possible to alternately optimize P4a and P4b.…”

Section: B Part-1: Admmmentioning

confidence: 99%

Energy-efficient computation offloading and resource allocation in SWIPT-based MEC Networks

Xuefei

2024

IEEE Access

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Section: B Part-1: Admmmentioning

confidence: 99%

Energy-efficient computation offloading and resource allocation in SWIPT-based MEC Networks

Xuefei

2024

IEEE Access

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“…The fractional objective function in P1 and the C1 and C2 constraints turn the problem P1 into a mixed integer non-convex fractional programming problem. The objective function in P1 can transform to the subtractive linear form [16,17] and solved according to the Dinkelbach theorem [18]. The relaxed problem can be represented by: In the cellular D2D system, we assume that the resource allocation policy is centrally coordinated by the base station.…”

Section: Iterative Algorithm For Resource Allocationmentioning

confidence: 99%

Energy Efficient Power Domain Non-Orthogonal Multiple Access Based Cellular Device-to-Device Communication for 5G Networks

2020

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This paper examines the resource block and power allocation in the power domain non-orthogonal multiple access (PD-NOMA) based cellular device-to-device (D2D) systems. To improve the energy efficiency of the D2D systems and to manage the mutual interference level as well as the quality of service (QoS) requirement of cellular users, different power level is applied to the D2D users sharing the same resource blocks (RBs) to the legacy users. It is essential to design an efficient resource block and power allocation method for PD-NOMA based cellular D2D systems which guarantee the successive interference cancellation (SIC) order in the power allocation solution. In this paper, we propose an iterative algorithm of resource block and power allocation for cellular D2D system which incorporates the SIC aware geometric water filling (GWF) method in the power allocation solution. It is shown that the proposed SIC aware geometric water filling achieves higher energy efficiency compared to iterative water-filling (IWF) power allocation and the GWF based orthogonal multiple access (OMA) method.

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“…whereγ 2 is the average channel gain between backscattering device and the gateway. Substituting the Eqs (10), (12), (13), and (15) in (9), we obtain…”

Section: A Outage Performancementioning

confidence: 99%

“…The distributed architecture of IoT networks favors the deployment of decentralized RF sources that can be accessed anytime. Besides this, energy harvesting through wireless power transmission can extend the life cycle of the IoT networks with little changes in hardware implementations [11], [12] To overcome the above-mentioned limitations, a new backscatter paradigm has emerged that is called ambient backscatter communication [13]. An ambient backscatter transmitter uses ambient RF signals in order to perform in a battery-free manner.…”

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confidence: 99%

Simultaneous harvest-and-transmit ambient backscatter communications under Rayleigh fading

Jameel

Ristaniemi

Khan

et al. 2019

J Wireless Com Network

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Ambient backscatter communications is an emerging paradigm and a key enabler for pervasive connectivity of low-powered wireless devices. It is primarily beneficial in the Internet of things (IoT) and the situations where computing and connectivity capabilities expand to sensors and miniature devices that exchange data on a low power budget. The premise of the ambient backscatter communication is to build a network of devices capable of operating in a battery-free manner by means of smart networking, radio frequency (RF) energy harvesting and power management at the granularity of individual bits and instructions. Due to this innovation in communication methods, it is essential to investigate the performance of these devices under practical constraints. To do so, this article formulates a model for wireless-powered ambient backscatter devices and derives a closed-form expression of outage probability under Rayleigh fading. Based on this expression, the article provides the power-splitting factor that balances the tradeoff between energy harvesting and achievable data rate. Our results also shed light on the complex interplay of a power-splitting factor, amount of harvested energy, and the achievable data rates. Index TermsAmbient backscatter communications, Energy harvesting, Internet of Things (IoT), Smart networking, Wireless-powered communication I. INTRODUCTIONThe grand vision of the Internet of things (IoT) is quickly turning into reality by bringing everything to the Internet [1], [2]. Latest devices ranging from smartphones to implantable sensors and wearables are claiming to be "IoT capable". Although significant improvements have been seen from the design perspective of wireless devices, the objective of connecting everything to the Internet is still a far cry [3]. It is because several important challenges arise when ensuring ubiquitous connectivity of devices. As indicated in [4], one of the first challenge is the limited life-cycle of miniature wireless devices. The energy constrained nature of devices becomes an obstacle as the massive amount of data is transferred across an IoT network and the devices are required to be operated in an untethered manner. Then, there is a requirement of communication reliability which is even more difficult to maintain in large-scale wireless systems [5]. The increased reliability most often comes at a cost of increased energy consumption which cannot be regulated by small energy reservoirs of miniature IoT devices. Above all, these devices would need to demonstrate services like ultra-reliable low-latency communications (URLLC), enhanced mobile broadband (eMBB), and massive machine type communications (mMTC)for beyond 5G networks. Resultantly, it has become evident that an ultra low-powered communication paradigm is essential for enabling short-range communication among devices, without compromising the reliability of communications [2], [6].Of late, backscatter communication has gathered the attention of the researchers as a key enabling technology for connecting IoT...

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Distributed Resource Allocation for Energy Efficiency in OFDMA Multicell Networks With Wireless Power Transfer

Abstract: This is a self-archived version of an original article. This version may differ from the original in pagination and typographic details.

Cited by 44 publications

References 29 publications

Energy-efficient computation offloading and resource allocation in SWIPT-based MEC Networks

Energy-efficient computation offloading and resource allocation in SWIPT-based MEC Networks

Energy Efficient Power Domain Non-Orthogonal Multiple Access Based Cellular Device-to-Device Communication for 5G Networks

Simultaneous harvest-and-transmit ambient backscatter communications under Rayleigh fading

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