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The use of wearable and mobile devices for health monitoring and activity recognition applications is increasing rapidly. These devices need to maximize their accuracy and active time under a tight energy budget imposed by battery and small…

Signal Processing · Electrical Eng. & Systems 2019-02-25 Ganapati Bhat , Kunal Bagewadi , Hyung Gyu Lee , Umit Y. Ogras

This paper investigates wireless-powered cell-free systems, in which the users send their uplink data signal while simultaneously harvesting energy from network nodes and user terminals - including the transmitting user terminal itself - by…

Signal Processing · Electrical Eng. & Systems 2022-12-29 Iran M. Braga , Roberto P. Antonioli , Gabor Fodor , Yuri C. B. Silva , Walter C. Freitas

Ensuring the frequency stability of electric grids with increasing renewable resources is a key problem in power system operations. In recent years, a number of advanced controllers have been designed to optimize frequency control. These…

Systems and Control · Electrical Eng. & Systems 2023-05-23 Wenqi Cui , Guanya Shi , Yuanyuan Shi , Baosen Zhang

To enhance wireless communication in IoT systems using reconfigurable intelligent surfaces (RISs), efficient control of programmable passive and active elements is essential. However, increasing RIS elements requires more microcontrollers,…

Information Theory · Computer Science 2025-02-14 Shakil Ahmed , Ahmed E. Kamal , Mohamed Y. Selim

We study decentralized estimation of time-varying signals at a fusion center, when energy harvesting sensors transmit sampled data over rate-constrained links. We propose dynamic strategies to select radio parameters, sampling set, and…

Signal Processing · Electrical Eng. & Systems 2020-08-05 C. Battiloro , P. Di Lorenzo , P. Banelli , S. Barbarossa

This paper considers a multiple-input multiple-output (MIMO) relay system with an energy harvesting relay node. All nodes are equipped with multiple antennas, and the relay node depends on the harvested energy from the received signal to…

Information Theory · Computer Science 2017-03-31 Jialing Liao , Muhammad R. A. Khandaker , Kai-Kit Wong

Soft robotic grippers are shown to be high effective for grasping unstructured objects with simple sensing and control strategies. However, they are still limited by their speed, sensing capabilities and actuation mechanism. Hence, their…

In this work, we employ multiple energy harvesting relays to assist information transmission from a multi-antenna hybrid access point (HAP) to a receiver. All the relays are wirelessly powered by the HAP in the power-splitting (PS)…

Information Theory · Computer Science 2020-01-29 Shimin Gong , Yuze Zou , Dinh Thai Hoang , Jing Xu , Wenqing Cheng , Dusit Niyato

Waveform optimization has recently been shown to be a key technique to boost the efficiency and range of far-field wireless power transfer (WPT). Current research has optimized transmit waveform adaptive to channel state information (CSI)…

Signal Processing · Electrical Eng. & Systems 2021-11-30 Yumeng Zhang , Bruno Clerckx

In this paper, we introduce a new model for RF-powered cognitive radio networks with the aim to improve the performance for secondary systems. In our proposed model, when the primary channel is busy, the secondary transmitter is able either…

Networking and Internet Architecture · Computer Science 2016-08-10 Dinh Thai Hoang , Dusit Niyato , Ping Wang , Dong In Kim , Zhu Han

In this paper, we propose a network scenario where the baseband processes of the virtual small cells powered solely by energy harvesters and batteries can be opportunistically executed in a grid-connected edge computing server, co-located…

Systems and Control · Electrical Eng. & Systems 2019-06-14 Dagnachew Azene T. , Marco Miozzo , Paolo Dini

We study a Stackelberg game between a base station and a multi-antenna power beacon for wireless energy harvesting in a multiple sensor node scenario. Assuming imperfect CSI between the sensor nodes and the power beacon, we propose a…

Information Theory · Computer Science 2016-10-27 Siddhartha Sarma , Kundan Kandhway , Joy Kuri

In this paper, the theoretical sustainable capacity of wireless networks with radio frequency (RF) energy harvesting is analytically studied. Specifically, we consider a large scale wireless network where base stations (BSs) and low power…

Networking and Internet Architecture · Computer Science 2018-06-05 Ziru Chen , Zhao Chen , Lin X. Cai , Yu Cheng , Ruoting Gong

We propose a variation of harvest-then-consume protocol with low complexity where the harvest and consume phases change when the battery energy level reaches certain thresholds. The proposed protocol allows us to control the possible energy…

Networking and Internet Architecture · Computer Science 2018-07-12 Sudarshan Guruacharya , Vandana Mittal , Ekram Hossain

In this paper, we develop optimal energy-bandwidth allocation algorithms in fading channels for multiple energy harvesting transmitters, each may communicate with multiple receivers via orthogonal channels. We first assume that the side…

Information Theory · Computer Science 2014-10-13 Zhe Wang , Vaneet Aggarwal , Xiaodong Wang

In this paper, a two-hop communication system with energy harvesting nodes is considered. Unlike battery powered wireless nodes, both the source and the relay are able to harvest energy from environment during communication, therefore, both…

Information Theory · Computer Science 2012-03-01 Oner Orhan , Elza Erkip

The increasing number of wireless devices operating in unlicensed spectrum motivates the development of intelligent adaptive approaches to spectrum access that go beyond traditional carrier sensing. We develop a novel distributed…

Networking and Internet Architecture · Computer Science 2021-11-19 Akash Doshi , Jeffrey G. Andrews

In this paper, a novel electret-based capacitive energy harvesting device has been developed according to out-of-plane gap closing scheme. The device is composed of a micro cantilever and a substrate which form a variable capacitor and is…

Mesoscale and Nanoscale Physics · Physics 2017-02-01 Mahyar Ghavami Khabir , Saber Azizi , Mohammad Reza Ghazavi

Wave energy harvesting could be a substantial renewable energy source without impact on the global climate and ecology, yet practical attempts have struggle d with problems of wear and catastrophic failure. An innovative technology for…

Soft Condensed Matter · Physics 2011-10-17 Karsten Ahnert , Markus Abel , Matthias Kollosche , Per Jørgen Jørgensen , Guggi Kofod

Cost-efficient and low-power sensing nodes enable to monitor various physical environments. Some of these impose extreme operating conditions, subjecting the nodes to excessive heat or rainfall or motion. Rough operating conditions affect…

Networking and Internet Architecture · Computer Science 2025-02-24 Waltenegus Dargie