Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

IEEE International Conference on Communications workshops

A Comparison of Secrecy Enhancing Techniques for Secure SWIPT System

Mustafa A. Kishk, Harpreet S. Dhillon

Published May 1, 2018• 1 citation
Publisher

Abstract

Owing to the tendency of RF-powered wireless devices to be located closer to the RF sources in SWIPT systems, the secrecy performance of RF transmissions needs to be carefully studied. In this paper, we study the secrecy performance of a wireless network that is simultaneously transmitting information and power to information receivers (IRs) and energy receivers (ERs), respectively. Considering the ERs as potential eavesdroppers, we provide a generalized model that captures three popular secrecy enhancing techniques: (i) adding artificial noise (AN) to the transmitted signal, (ii) surrounding the information transmitters (ITs) with secrecy guard zones, and (iii) using directional beamforming towards the intended IRs. Assuming an interference-limited system, we use the proposed generalized model to derive the successful connection and the secrecy outage probabilities of the IR (Pconand Pout, respectively) and the energy coverage probability (Penergy) of the ER for each of the three techniques. We then study the influence of the guard zone radius, the AN power splitting ratio, and the beamwidth on these performance metrics. We focus on two parameter selection criteria: (i) minimizing Poutfor given constraints on Pconand Penergy, and (ii) maximizing Pconfor given constraints on Pout and Penergy. At lower densities of ERs, the results demonstrate the optimality of the GZ technique for the first selection criterion and the BF technique for the second selection criterion. At higher densities of ERs, however, the AN technique is shown to be optimal for both the selection criteria.

DOI
10.1109/iccw.2018.8403566

Related papers

Secrecy Wireless Information and Power Transfer in Fading Wiretap Channel

Hong Xing, Liang Liu, Rui Zhang

Simultaneous wireless information and power transfer (SWIPT) has recently drawn significant interest for its dual use of radio signals to provide wireless data and energy access at the same time. However, a challenging secrecy communication issue arises as the messages sent to the information receivers (IRs) may be eavesdropped upon by energy receivers (ERs), which are presumed to harvest energy only from received signals. To tackle this problem, we propose in this paper an artificial-noise (AN)-aided transmission scheme to facilitate the secrecy information transmission to IRs and, yet, meet the energy harvesting requirement for ERs, under the assumption that the AN can be canceled at IRs but not at ERs. Specifically, the proposed scheme splits the transmit power into two parts: to send the confidential message to the IR and an AN to interfere with the ER, respectively. Under a simplified three-node wiretap channel setup, the transmit power allocations and power splitting ratios over fading channels are jointly optimized to minimize the outage probability for delay-limited secrecy information transmission or to maximize the average rate for no-delay-limited secrecy information transmission, subject to a combination of average and peak power constraints (APC and PPC) at the transmitter (Tx) and an average energy harvesting constraint at the ER. Both the secrecy outage probability minimization and average rate maximization problems are shown to be nonconvex, and for each, we propose the optimal solution based on the dual decomposition and the suboptimal solution based on the alternating optimization. Furthermore, two benchmark schemes are introduced for comparison where the AN is not used at the Tx and where the AN is used but cannot be canceled by the IR, respectively. Finally, the performances of proposed schemes are evaluated by simulations in terms of various tradeoffs for wireless (secrecy) information versus energy transmissions.

arXiv:1408.1987•IEEE Transactions on Vehicular Technology•Jan 22, 2015•188 citations

Secrecy wireless information and power transfer in fading wiretap channel

Hong Xing, Liang Liu, Rui Zhang

Simultaneous wireless information and power transfer (SWIPT) has recently drawn significant interests for its dual use of radio signals to provide wireless data and energy access at the same time. However, a challenging secrecy communication problem arises in the SWIPT system since the messages sent to information receivers (IRs) may be eavesdropped by energy receivers (ERs), which are presumed to receive energy from the same signals broadcast by the transmitter. To tackle this problem, we propose in this paper an artificial noise (AN) aided transmission scheme to facilitate the secrecy information transmission to IRs and yet meet the energy harvesting requirement for ERs, under the assumption that the AN can be cancelled at IRs but not at ERs. Specifically, the proposed scheme splits the power at the transmitter into two parts, to send the confidential message to the IR and an AN to interfere with the ER against eavesdropping, respectively. Under a simplified three-node wiretap channel setup, the transmit power allocations and power splitting ratios over fading channels are jointly optimized to maximize the average secrecy information rate for the IR subject to a combination of average and peak power constraints at the transmitter as well as an average energy harvesting constraint at the ER. The formulated problem is shown to be non-convex, for which we propose an efficient algorithm by iteratively optimizing the transmit power allocations and power splitting ratios over fading channels. Finally, the performance of the proposed scheme is evaluated by simulations and compared against other heuristic schemes in terms of achievable (secrecy) rate-energy trade-off.

International Conference on Communications•Jun 1, 2014•35 citations

Robust Secrecy Beamforming With Energy-Harvesting Eavesdroppers

Muhammad R. A. Khandaker, Kai‐Kit Wong

This letter considers simultaneous wireless information and power transfer (SWIPT) in multiple-input-single-output downlink systems in which a multiantenna transmitter sends a secret message to a single-antenna information receiver (IR) with multiple single-antenna energy receivers (ERs). We aim to maximize the harvested energy by the ERs while maintaining the signal-to-interference-and-noise ratio (SINR) threshold at the IR and keeping the message secure from possible eavesdropping by the ERs by suppressing their SINRs. Both scenarios of perfect and imperfect channel state information at the transmitter are studied. Using semidefinite relaxation techniques, we show that there always exists a rank-one optimal solution for the IR, i.e., transmit beamforming is optimal for the IR.

IEEE Wireless Communications Letters•Sep 17, 2014•87 citations

Secrecy Outage Analysis of CR-SWIPT Networks With Artificial Noise and Spatially Random Secondary Terminals

Yuanyuan Ma, Tiejun Lv, Han Liu +3 more

In this paper, the secrecy outage performance of cognitive radio (CR) systems with simultaneous wireless information and power transfer (SWIPT) is investigated, in which non-colluding eavesdroppers (Eves) are randomly located in a 2-dimensional disk and artificial noise is added to safeguard the secrecy performance of the targeted information delivery in the secondary network. The secondary users coexist with primary users in the same bands while the secondary user transmitter (SU-TX) transmits confidential messages to a legitimate receiver (Bob) and energy to multiple energy-receivers (ERs) via the same radio frequency signals. Apart from harvesting energy, these ERs may act as Eves to overhear the confidential information only for Bob. SU-TX equipped with multiple antennas performs beamforming to Bob, which is equipped with multiple antennas and adopts selection combining (SC) scheme. To enhance the secure performance of the considered CR-SWIPT system, SU-TX adds artificial noise (AN) to the original signal designed for Bob according to the instantaneous channel state information (CSI) between SU-TX and Bob, where the artificial noise and original signals for Bob are orthogonal so that Bob can cancel this noise. On ERs’ side, the total received energy for harvesting is not degraded, and a lower signal-to-interference-plus-noise ratio for eavesdropping on the information between SU-TX and Bob is introduced. The approximated closed-form expression for the secrecy outage probability (SOP) is derived by using Gauss-Laguerre quadrature, as well as the asymptotic results are valid in the high signal to noise ratio region. Finally, Monte-Carlo simulations are presented to validate the correctness of the derived analytical results.

IEEE Transactions on Cognitive Communications and Networking•Nov 26, 2021•16 citations

Secrecy Performance Optimization of SWIPT Wireless Networks in Partial Secrecy Regime

Shilpa Thakur, Satyajit Thakor

This work considers a single-input-single-output (SISO) simultaneous wireless information and power transfer (SWIPT) system, which comprises a single-antenna transmitter named Alice, one single-antenna legitimate receiver named Bob, and$M(M\gt 1)$single-antenna energy receivers (ERs). This paper examines the secrecy performance SISO SWIPT network in the presence of malevolent ERs in the partial secrecy regime that is based on the notion of practical equivocation and derives the closed-form expression for the generalized secrecy outage probability (GSOP), average fractional equivocation (AFE), and average information leakage rate (AILR). Moreover, a performance metric, referred to as the amount of confusion level (ACL), which measures the degree of confusion level at ERs is also analyzed for the proposed SWIPT networks. The optimal values of the secrecy rate and Alice’s transmission rate which are subject to throughput constraints are calculated in order to minimize the GSOP, maximize the AFE, and minimize the AILR. Finally, the optimal value of the power spitting factor is calculated.

IEEE Transactions on Green Communications and Networking•Sep 19, 2024•2 citations

On Secrecy Performance of MISO SWIPT Systems With TAS and Imperfect CSI

Gaofeng Pan, Hongjiang Lei, Yansha Deng +4 more

In this paper, a multiple-input single-output (MISO) simultaneous wireless information and power transfer (SWIPT) system, including one base station (BS) equipped with multiple antennas, one desired single-antenna information receiver (IR), and N (N > 1) single-antenna energy-harvesting receivers (ERs) is considered. Assuming that the information signal to the desired IR may be eavesdropped by ERs if ERs are malicious, we investigate the secrecy performance of the target MISO SWIPT system when imperfect channel state information (CSI) is available and adopted for transmit antenna selection at the BS. Considering that each eavesdropping link experiences independent but not necessarily identically distributed Rayleigh fading, the closed-form expressions for the exact and the asymptotic secrecy outage probability, and the average secrecy capacity are derived and verified by simulations. Furthermore, the optimal power splitting factor is derived for each ER to realize the tradeoff between the energy harvesting and the information eavesdropping. Our results reveal the impact of the imperfect CSI on the secrecy performance of MISO SWIPT systems in the presence of multiple wiretap channels.

IEEE Transactions on Communications•May 27, 2016•136 citations
Owing to the tendency of RF-powered wireless devices to be located closer to the RF sources in SWIPT systems, the secrecy performance of RF transmissions needs to be carefully studied. In this paper, we study the secrecy performance of a wireless network that is simultaneously transmitting information and power to information receivers (IRs) and energy receivers (ERs), respectively. Considering the ERs as potential eavesdroppers, we provide a generalized model that captures three popular secrecy enhancing techniques: (i) adding artificial noise (AN) to the transmitted signal, (ii) surrounding the information transmitters (ITs) with secrecy guard zones, and (iii) using directional beamforming towards the intended IRs. Assuming an interference-limited system, we use the proposed generalized model to derive the successful connection and the secrecy outage probabilities of the IR (Pconand Pout, respectively) and the energy coverage probability (Penergy) of the ER for each of the three techniques. We then study the influence of the guard zone radius, the AN power splitting ratio, and the beamwidth on these performance metrics. We focus on two parameter selection criteria: (i) minimizing Poutfor given constraints on Pconand Penergy, and (ii) maximizing Pconfor given constraints on Pout and Penergy. At lower densities of ERs, the results demonstrate the optimality of the GZ technique for the first selection criterion and the BF technique for the second selection criterion. At higher densities of ERs, however, the AN technique is shown to be optimal for both the selection criteria.
Simultaneous wireless information and power transfer (SWIPT) has recently drawn significant interest for its dual use of radio signals to provide wireless data and energy access at the same time. However, a challenging secrecy communication issue arises as the messages sent to the information receivers (IRs) may be eavesdropped upon by energy receivers (ERs), which are presumed to harvest energy only from received signals. To tackle this problem, we propose in this paper an artificial-noise (AN)-aided transmission scheme to facilitate the secrecy information transmission to IRs and, yet, meet the energy harvesting requirement for ERs, under the assumption that the AN can be canceled at IRs but not at ERs. Specifically, the proposed scheme splits the transmit power into two parts: to send the confidential message to the IR and an AN to interfere with the ER, respectively. Under a simplified three-node wiretap channel setup, the transmit power allocations and power splitting ratios over fading channels are jointly optimized to minimize the outage probability for delay-limited secrecy information transmission or to maximize the average rate for no-delay-limited secrecy information transmission, subject to a combination of average and peak power constraints (APC and PPC) at the transmitter (Tx) and an average energy harvesting constraint at the ER. Both the secrecy outage probability minimization and average rate maximization problems are shown to be nonconvex, and for each, we propose the optimal solution based on the dual decomposition and the suboptimal solution based on the alternating optimization. Furthermore, two benchmark schemes are introduced for comparison where the AN is not used at the Tx and where the AN is used but cannot be canceled by the IR, respectively. Finally, the performances of proposed schemes are evaluated by simulations in terms of various tradeoffs for wireless (secrecy) information versus energy transmissions.
Simultaneous wireless information and power transfer (SWIPT) has recently drawn significant interests for its dual use of radio signals to provide wireless data and energy access at the same time. However, a challenging secrecy communication problem arises in the SWIPT system since the messages sent to information receivers (IRs) may be eavesdropped by energy receivers (ERs), which are presumed to receive energy from the same signals broadcast by the transmitter. To tackle this problem, we propose in this paper an artificial noise (AN) aided transmission scheme to facilitate the secrecy information transmission to IRs and yet meet the energy harvesting requirement for ERs, under the assumption that the AN can be cancelled at IRs but not at ERs. Specifically, the proposed scheme splits the power at the transmitter into two parts, to send the confidential message to the IR and an AN to interfere with the ER against eavesdropping, respectively. Under a simplified three-node wiretap channel setup, the transmit power allocations and power splitting ratios over fading channels are jointly optimized to maximize the average secrecy information rate for the IR subject to a combination of average and peak power constraints at the transmitter as well as an average energy harvesting constraint at the ER. The formulated problem is shown to be non-convex, for which we propose an efficient algorithm by iteratively optimizing the transmit power allocations and power splitting ratios over fading channels. Finally, the performance of the proposed scheme is evaluated by simulations and compared against other heuristic schemes in terms of achievable (secrecy) rate-energy trade-off.
This letter considers simultaneous wireless information and power transfer (SWIPT) in multiple-input-single-output downlink systems in which a multiantenna transmitter sends a secret message to a single-antenna information receiver (IR) with multiple single-antenna energy receivers (ERs). We aim to maximize the harvested energy by the ERs while maintaining the signal-to-interference-and-noise ratio (SINR) threshold at the IR and keeping the message secure from possible eavesdropping by the ERs by suppressing their SINRs. Both scenarios of perfect and imperfect channel state information at the transmitter are studied. Using semidefinite relaxation techniques, we show that there always exists a rank-one optimal solution for the IR, i.e., transmit beamforming is optimal for the IR.
In this paper, the secrecy outage performance of cognitive radio (CR) systems with simultaneous wireless information and power transfer (SWIPT) is investigated, in which non-colluding eavesdroppers (Eves) are randomly located in a 2-dimensional disk and artificial noise is added to safeguard the secrecy performance of the targeted information delivery in the secondary network. The secondary users coexist with primary users in the same bands while the secondary user transmitter (SU-TX) transmits confidential messages to a legitimate receiver (Bob) and energy to multiple energy-receivers (ERs) via the same radio frequency signals. Apart from harvesting energy, these ERs may act as Eves to overhear the confidential information only for Bob. SU-TX equipped with multiple antennas performs beamforming to Bob, which is equipped with multiple antennas and adopts selection combining (SC) scheme. To enhance the secure performance of the considered CR-SWIPT system, SU-TX adds artificial noise (AN) to the original signal designed for Bob according to the instantaneous channel state information (CSI) between SU-TX and Bob, where the artificial noise and original signals for Bob are orthogonal so that Bob can cancel this noise. On ERs’ side, the total received energy for harvesting is not degraded, and a lower signal-to-interference-plus-noise ratio for eavesdropping on the information between SU-TX and Bob is introduced. The approximated closed-form expression for the secrecy outage probability (SOP) is derived by using Gauss-Laguerre quadrature, as well as the asymptotic results are valid in the high signal to noise ratio region. Finally, Monte-Carlo simulations are presented to validate the correctness of the derived analytical results.
This work considers a single-input-single-output (SISO) simultaneous wireless information and power transfer (SWIPT) system, which comprises a single-antenna transmitter named Alice, one single-antenna legitimate receiver named Bob, andM(M>1)M(M\gt 1)M(M>1)single-antenna energy receivers (ERs). This paper examines the secrecy performance SISO SWIPT network in the presence of malevolent ERs in the partial secrecy regime that is based on the notion of practical equivocation and derives the closed-form expression for the generalized secrecy outage probability (GSOP), average fractional equivocation (AFE), and average information leakage rate (AILR). Moreover, a performance metric, referred to as the amount of confusion level (ACL), which measures the degree of confusion level at ERs is also analyzed for the proposed SWIPT networks. The optimal values of the secrecy rate and Alice’s transmission rate which are subject to throughput constraints are calculated in order to minimize the GSOP, maximize the AFE, and minimize the AILR. Finally, the optimal value of the power spitting factor is calculated.
In this paper, a multiple-input single-output (MISO) simultaneous wireless information and power transfer (SWIPT) system, including one base station (BS) equipped with multiple antennas, one desired single-antenna information receiver (IR), and N (N > 1) single-antenna energy-harvesting receivers (ERs) is considered. Assuming that the information signal to the desired IR may be eavesdropped by ERs if ERs are malicious, we investigate the secrecy performance of the target MISO SWIPT system when imperfect channel state information (CSI) is available and adopted for transmit antenna selection at the BS. Considering that each eavesdropping link experiences independent but not necessarily identically distributed Rayleigh fading, the closed-form expressions for the exact and the asymptotic secrecy outage probability, and the average secrecy capacity are derived and verified by simulations. Furthermore, the optimal power splitting factor is derived for each ER to realize the tradeoff between the energy harvesting and the information eavesdropping. Our results reveal the impact of the imperfect CSI on the secrecy performance of MISO SWIPT systems in the presence of multiple wiretap channels.