RF-Based Energy Harvesting in Decode-and-Forward Relaying Systems: Ergodic and Outage Capacities
Yanju Gu,Sonia Aissa +1 more
Reads0
Chats0
TLDR
An interference aided energy harvesting scheme is proposed for cooperative relaying systems, where energy-constrained relays harvest energy from the received information signal and co-channel interference signals, and then use that harvested energy to forward the correctly decoded signal to the destination.Abstract:
Radio-frequency energy harvesting constitutes an effective way to prolong the lifetime of wireless networks, wean communication devices off the battery and power line, benefit the energy saving and lower the carbon footprint of wireless communications. In this paper, an interference aided energy harvesting scheme is proposed for cooperative relaying systems, where energy-constrained relays harvest energy from the received information signal and co-channel interference signals, and then use that harvested energy to forward the correctly decoded signal to the destination. The time-switching scheme (TS), in which the receiver switches between decoding information and harvesting energy, as well as the power-splitting scheme (PS), where a portion of the received power is used for energy harvesting and the remaining power is utilized for information processing, are adopted separately. Applying the proposed energy harvesting approach to a decode-and-forward relaying system with the three-terminal model, the analytical expressions of the ergodic capacity and the outage capacity are derived, and the corresponding achievable throughputs are determined. Comparative results are provided and show that PS is superior to TS at high signal-to-noise ratio (SNR) in terms of throughput, while at low SNR, TS outperforms PS. Furthermore, considering different interference power distributions with equal aggregate interference power at the relay, the corresponding system capacity relationship, i.e., the ordering of capacities, is obtained.read more
Citations
More filters
Journal ArticleDOI
Fundamentals of Wireless Information and Power Transfer: From RF Energy Harvester Models to Signal and System Designs
TL;DR: This paper highlights three different energy harvester models, namely, one linear model and two nonlinear models, and shows how WIPT designs differ for each of them in single-user and multi-user deployments, and identifies the fundamental tradeoff between conveying information and power wirelessly.
Journal ArticleDOI
Performance of Wireless Powered Amplify and Forward Relaying Over Nakagami- $m$ Fading Channels With Nonlinear Energy Harvester
TL;DR: Performance of wireless powered relay with amplify-and-forward protocol is studied for Nakagami-m fading channels and an analytical expression is derived for the complementary cumulative distribution function (CCDF) of the end- to-end signal-to-noise ratio.
Journal ArticleDOI
Secure Communication via a Wireless Energy Harvesting Untrusted Relay
TL;DR: In this article, the authors investigated the problem of secure communication between a source and a destination via a wireless energy harvesting untrusted node that acts as a helper to relay the information; however, the source and destination nodes wish to keep the information confidential from the relay node.
Journal ArticleDOI
Optimal Energy Harvesting Protocols for Wireless Relay Networks
Saman Atapattu,Jamie Evans +1 more
TL;DR: This paper considers a relay network over a flat-fading channel, where the relay has no fixed power supply and thus needs to replenish energy via wireless energy harvesting from the signals transmitted by the source, and proposes a novel hybrid protocol which outperforms both PS and TS protocols.
Journal ArticleDOI
Simultaneous Wireless Transfer of Power and Information in a Decode-and-Forward Two-Way Relaying Network
TL;DR: The results from analysis and simulation show that the proposed schemes outperform the benchmark scheme with equal resource allocation and that the gain gets more prominent as the rates of the data exchanged or the relay locations become more asymmetric.
References
More filters
Book
Table of Integrals, Series, and Products
TL;DR: Combinations involving trigonometric and hyperbolic functions and power 5 Indefinite Integrals of Special Functions 6 Definite Integral Integral Functions 7.Associated Legendre Functions 8 Special Functions 9 Hypergeometric Functions 10 Vector Field Theory 11 Algebraic Inequalities 12 Integral Inequality 13 Matrices and related results 14 Determinants 15 Norms 16 Ordinary differential equations 17 Fourier, Laplace, and Mellin Transforms 18 The z-transform
Journal ArticleDOI
Interference Alignment and Degrees of Freedom of the $K$ -User Interference Channel
Viveck R. Cadambe,Syed A. Jafar +1 more
TL;DR: For the fully connected K user wireless interference channel where the channel coefficients are time-varying and are drawn from a continuous distribution, the sum capacity is characterized as C(SNR)=K/2log (SNR)+o(log( SNR), which almost surely has K/2 degrees of freedom.
Journal ArticleDOI
Multi-Cell MIMO Cooperative Networks: A New Look at Interference
TL;DR: An overview of the theory and currently known techniques for multi-cell MIMO (multiple input multiple output) cooperation in wireless networks is presented and a few promising and quite fundamental research avenues are also suggested.
Journal ArticleDOI
Energy Harvesting Sensor Nodes: Survey and Implications
TL;DR: Various aspects of energy harvesting sensor systems- architecture, energy sources and storage technologies and examples of harvesting-based nodes and applications are surveyed and the implications of recharge opportunities on sensor node operation and design of sensor network solutions are discussed.
Journal ArticleDOI
Dedicated Short-Range Communications (DSRC) Standards in the United States
TL;DR: The content and status of the DSRC standards being developed for deployment in the United States are explained, including insights into why specific technical solutions are being adopted, and key challenges remaining for successful DSRC deployment.
Related Papers (5)
Wireless Information and Power Transfer: Architecture Design and Rate-Energy Tradeoff
Xun Zhou,Rui Zhang,Chin Keong Ho +2 more