scispace - formally typeset
Open AccessJournal ArticleDOI

Wireless Information Transfer with Opportunistic Energy Harvesting

Reads0
Chats0
TLDR
In this paper, the authors considered a point-to-point wireless link over the narrowband flat-fading channel subject to time-varying co-channel interference and derived the optimal mode switching rule at the receiver to achieve various trade-offs between wireless information transfer and energy harvesting.
Abstract
Energy harvesting is a promising solution to prolong the operation of energy-constrained wireless networks. In particular, scavenging energy from ambient radio signals, namely wireless energy harvesting (WEH), has recently drawn significant attention. In this paper, we consider a point-to-point wireless link over the narrowband flat-fading channel subject to time-varying co-channel interference. It is assumed that the receiver has no fixed power supplies and thus needs to replenish energy opportunistically via WEH from the unintended interference and/or the intended signal sent by the transmitter. We further assume a single-antenna receiver that can only decode information or harvest energy at any time due to the practical circuit limitation. Therefore, it is important to investigate when the receiver should switch between the two modes of information decoding (ID) and energy harvesting (EH), based on the instantaneous channel and interference condition. In this paper, we derive the optimal mode switching rule at the receiver to achieve various trade-offs between wireless information transfer and energy harvesting. Specifically, we determine the minimum transmission outage probability for delay-limited information transfer and the maximum ergodic capacity for no-delay-limited information transfer versus the maximum average energy harvested at the receiver, which are characterized by the boundary of so-called "outage-energy" region and "rate-energy" region, respectively. Moreover, for the case when the channel state information (CSI) is known at the transmitter, we investigate the joint optimization of transmit power control, information and energy transfer scheduling, and the receiver's mode switching. The effects of circuit energy consumption at the receiver on the achievable rate-energy trade-offs are also characterized. Our results provide useful guidelines for the efficient design of emerging wireless communication systems powered by opportunistic WEH.

read more

Citations
More filters
Book ChapterDOI

Research on Interference Energy Harvesting Based on SWIPT Relay System

TL;DR: In this paper, the authors proposed interference energy harvesting (IEH) which can compensate for the loss of the SWIPT relay system rate caused by the interference, where the interference energy is divided among subsequent transmission blocks, which can reduce the duration of EH slots.
Journal ArticleDOI

Secure Analog Network Coding With Wireless Energy Harvesting Under Multiple Eavesdroppers

TL;DR: The comparison of these two protocols in various network environments exhibits that PS-ANC has a better performance than TS-ANC when the network conditions are unfavorable for wiretapping by the eavesdroppers.
Proceedings ArticleDOI

Role Selection for Energy Harvesting Cooperative Systems

TL;DR: In the high SNR regime, in the conventional EH relay system with fixed role configuration, the results show that the energy conversion efficiency and the power-splitting factor at the relay have negligible effect on the outage behavior of ROSE cooperation.
Journal ArticleDOI

Optimal Probabilistic Robust Beamforming for MISO SWIPT Systems with Gaussian Channel Uncertainties

TL;DR: For simultaneous wireless information and power transfer in the multi-input single-output broadcast channel, a probabilistic robust beamforming scheme which minimizes the outage probability of the information receiver subject to the probabilistically energy harvesting constraint is proposed.
Journal ArticleDOI

Design of an Intrinsically Safe Series-Series Compensation WPT System for Automotive LiDAR

TL;DR: A simple design procedure for a series-series compensation circuit, which uses capacitors in series with both primary and secondary coils of an air-gapped transformer, is consolidated, exemplifying its use in the prototype of a WPT system for automotive light detection and ranging (LiDAR) equipment.
References
More filters
Journal ArticleDOI

Interference Alignment and Degrees of Freedom of the $K$ -User Interference Channel

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

MIMO Broadcasting for Simultaneous Wireless Information and Power Transfer

TL;DR: This paper studies a multiple-input multiple-output (MIMO) wireless broadcast system consisting of three nodes, where one receiver harvests energy and another receiver decodes information separately from the signals sent by a common transmitter, and all the transmitter and receivers may be equipped with multiple antennas.
Journal ArticleDOI

Capacity of fading channels with channel side information

TL;DR: The Shannon capacity of a fading channel with channel side information at the transmitter and receiver, and at the receiver alone is obtained, analogous to water-pouring in frequency for time-invariant frequency-selective fading channels.
Journal ArticleDOI

Fading channels: information-theoretic and communications aspects

TL;DR: This paper describes the statistical models of fading channels which are frequently used in the analysis and design of communication systems, and focuses on the information theory of fading channel, by emphasizing capacity as the most important performance measure.
Journal ArticleDOI

A new achievable rate region for the interference channel

TL;DR: A new achievable rate region for the general interference channel which extends previous results is presented and evaluated and the capacity of a class of Gaussian interference channels is established.
Related Papers (5)