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In this paper, we present a new power allocation scheme for a decode-and-forward (DF) relaying-enhanced cooperative wireless system. While both source and relay nodes may have limited traditional brown power supply or fixed green energy…

Information Theory · Computer Science 2014-07-09 Xueqing Huang , Nirwan Ansari

Internet of Things (IoT) devices have become increasingly ubiquitous with applications not only in urban areas but remote areas as well. These devices support industries such as agriculture, forestry, and resource extraction. Due to the…

Networking and Internet Architecture · Computer Science 2025-03-11 Ethan Fettes , Pablo G. Madoery , Halim Yanikomeroglu , Gunes Karabulut-Kurt , Abhishek Naik , Colin Bellinger , Stephane Martel , Khaled Ahmed , Sameera Siddiqui

In this paper, we consider an energy harvesting (EH) node which harvests energy from a radio frequency (RF) signal broadcasted by an access point (AP) in the downlink (DL). The node stores the harvested energy in an energy buffer and uses…

Information Theory · Computer Science 2014-12-04 Rania Morsi , Diomidis S. Michalopoulos , Robert Schober

Radio frequency (RF) wireless energy transfer (WET) is a promising technology for powering the growing ecosystem of Internet of Things (IoT) using power beacons (PBs). Recent research focuses on efficient PB architectures that can support…

An emerging solution for prolonging the lifetime of energy constrained relay nodes in wireless networks is to avail the ambient radio-frequency (RF) signal and to simultaneously harvest energy and process information. In this paper, an…

Information Theory · Computer Science 2016-11-17 A. A. Nasir , X. Zhou , S. Durrani , R. A. Kennedy

We investigate reconfigurable intelligent surface (RIS)-assisted simultaneous wireless information and power transfer (SWIPT) Internet of Things (IoT) networks, where energy-limited IoT devices are overlaid with cellular information users…

Information Theory · Computer Science 2024-07-18 Mohammadali Mohammadi , Hien Quoc Ngo , Michail Matthaiou

We investigate the long-term scheduling and power control scheme for a wirelessly powered cell-free Internet of Things (IoT) network which consists of distributed access points (APs) and large number of sensors. In each time slot, a subset…

Signal Processing · Electrical Eng. & Systems 2020-04-14 Xinhua Wang , Xiaodong Wang , Alexei Ashikhmin

The advance in RF energy transfer and harvesting technique over the past decade has enabled wireless energy replenishment for electronic devices, which is deemed as a promising alternative to address the energy bottleneck of conventional…

Information Theory · Computer Science 2015-01-06 Xiao Lu , Ian Flint , Dusit Niyato , Nicolas Privault , Ping Wang

Wireless energy transfer (WET) is emerging as an enabling green technology for Internet of Things (IoT) networks. WET allows the IoT devices to wirelessly recharge their batteries with energy from external sources such as dedicated radio…

Signal Processing · Electrical Eng. & Systems 2021-03-05 Osmel Martínez Rosabal , Onel L. Alcaraz López , Hirley Alves , Samuel Montejo-Sánchez , Matti Latva-aho

We investigate an internet-of-things system where energy-harvesting devices send status updates to a common receiver using the irregular repetition slotted ALOHA (IRSA) protocol. Energy shortages in these devices may lead to transmission…

Information Theory · Computer Science 2025-01-03 Khac-Hoang Ngo , Diep N. Nguyen , Thai-Mai Dinh Thi

Harvesting energy from ambient environment is a new promising solution to free electronic devices from electric wire or limited-lifetime battery, which may find very significant applications in sensor networks and body-area networks. This…

Information Theory · Computer Science 2014-11-25 Tao Li , Pingyi Fan , Khaled Ben Letaief

Wireless energy transfer (WET) is a green enabler of low-power Internet of Things (IoT). Therein, traditional optimization schemes relying on full channel state information (CSI) are often too costly to implement due to excessive energy…

Information Theory · Computer Science 2020-08-31 Onel L. A. López , Francisco A. Monteiro , Hirley Alves , Rui Zhang , Matti Latva-aho

This paper considers a heterogeneous ad hoc network with multiple transmitter-receiver pairs, in which all transmitters are capable of harvesting renewable energy from the environment and compete for one shared channel by random access. In…

Information Theory · Computer Science 2016-06-16 Hang Li , Chuan Huang , Ping Zhang , Shuguang Cui , Junshan Zhang

Radio Frequency (RF) Energy Harvesting holds a promising future for generating a small amount of electrical power to drive partial circuits in wirelessly communicating electronics devices. Reducing power consumption has become a major…

Networking and Internet Architecture · Computer Science 2012-09-05 A. M. Zungeru , Li-Minn Ang , S. R. S. Prabaharan , Kah Phooi Seng

In this paper, we investigate a communication system comprised of an energy harvesting (EH) source which harvests radio frequency (RF) energy from an out-of-band full-duplex relay node and exploits this energy to transmit data to a…

Information Theory · Computer Science 2016-09-20 Nikola Zlatanov , Derrick Wing Kwan Ng , Robert Schober

Energy harvesting is increasingly gaining importance as a means to charge battery powered devices such as sensor nodes. Efficient transmission strategies must be developed for Wireless Energy Harvesting Nodes (WEHNs) that take into account…

Information Theory · Computer Science 2012-12-06 Maria Gregori , Miquel Payaró

Over the last decade, simultaneous wireless information and power transfer (SWIPT) has become a practical and promising solution for connecting and recharging battery-limited devices, thanks to significant advances in low-power electronics…

Information Theory · Computer Science 2021-10-15 Zhiqiang Wei , Xianghao Yu , Derrick Wing Kwan Ng , Robert Schober

In this paper, we propose a wirelessly powered Internet of Things (IoT) system based on the cell-free massive MIMO technology. In such a system, during the downlink phase, the sensors harvest radio-frequency (RF) energy emitted by the…

Signal Processing · Electrical Eng. & Systems 2020-01-07 Xinhua Wang , Alexei Ashikhmin , Xiaodong Wang

In this paper, we present techniques and examples to reduce power consumption and increase energy efficiency of autonomous Wireless Sensor Nodes (WSNs) for the Internet of Things. We focus on the RF Energy Harvester (RFEH), the data…

Emerging Technologies · Computer Science 2018-02-09 G. C. Martins , A. Urso , A. Mansano , Y. Liu , W. A. Serdijn

Many Internet of Things (IoT) networks with Radio Frequency (RF) powered devices operate over a shared medium. They thus require a channel access protocol. Unlike conventional networks where devices have unlimited energy, in an RF-powered…

Networking and Internet Architecture · Computer Science 2024-04-24 Hang Yu , Lei Zhang , Yiwei Li , Kwan-Wu Chin , Changlin Yang