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Double-RIS Enabled Physical Layer Security for Wireless-Powered Communication Systems Over Rayleigh Fading Channels
Jingyu Chen;Kunrui Cao;Haiyang Ding;Lu Lv;Yinghui Ye;Haolian Chi;Tao Wang;Liang Yang
IEEE Transactions on Communications
Year: 2025 | Early Access Article |
This paper investigates the physical layer security for a double-reconfigurable intelligent surface (DRIS) aided wireless-powered communication (WPC) system in the presence of an eavesdropper, where one RIS (termed as RIS-1) is deployed between power station (PS) and information user (U) while the other RIS (termed as RIS-2) is deployed between U and access point (AP). Moreover, an idle user acts ...Show More
Covert Communications in D2D Underlaying Cellular Networks With Dual Uncertainties at the Warden
Zhiyi Du;Weiyu Chen;Junshan Luo;Haiyang Ding;Shilian Wang;Zhengbo Sun
IEEE Internet of Things Journal
Year: 2025 | Early Access Article |
Covert device-to-device (D2D) communication aims to hide the existence of D2D transmission behavior from the warden, which plays a pivotal role in bolstering D2D communication security. The existing research on covert D2D communication either considered the interference’s assistance with perfect channel state information (CSI) available at the warden, or considered channel distribution information...Show More
Angle and Distance Discrimination by Utilizing Frequency Conversion Capability of STC-IRS for Covert Communications
Manlin Wang;Yao Yao;Haiyang Ding;Shihai Shao;Bin Xia;Jiangzhou Wang
Covert communication is an important approach to ensure information security by hiding the transmission behavior. Space-domain-coding intelligent reflecting surface (SDC-IRS) can adjust the phase of the reflection signal for passive beamforming in angle domains, which is widely employed in covert communications. However, the gains by SDC-IRS vanish when the warder is proximal to the receiver in an...Show More
Fast Zero Migration Algorithm for Near-Field Sparse MIMO Array Grating Lobe Suppression
Under near-field conditions, spatial undersampling leads to grating lobes in the sparse multiple-input multiple-output (MIMO) array results. A fast zero migration algorithm is developed in this communication for suppressing the grating lobes. In our method, resampling in the wavenumber domain is first achieved on the received data, and then, the fast inverse Fourier transform (FT) and compensation...Show More
Performance Analysis for STAR-RIS-Assisted Wireless Powered Communications With Cooperative Jamming
Haolian Chi;Kunrui Cao;Haiyang Ding;Lu Lv;Jingyu Chen;Danyu Diao;Buhong Wang;Fengkui Gong
This article investigates the simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) assisted secure transmissions in wireless powered communication (WPC) systems. According to the conditions of communication links, three scenarios are considered. Correspondingly, two transmission schemes are proposed for outdoor and indoor users to enhance the reliability and sec...Show More
Effective Secrecy Capacity for RIS-Assisted NOMA Communication Networks
Non-orthogonal multiple access (NOMA) and reconfigurable intelligent surface (RIS) are pivotal technologies for achieving the dual objectives of high spectral efficiency and low power consumption in the future of wireless communications. In this paper, we investigate the effective secrecy capacity (ESC) of the RIS-assisted NOMA network subject to delay constraint. The ESC serves as a crucial metri...Show More
Analysis and Calibration of Spatially Variant Wavenumber Spectrum in Near-Field SAR Imaging
2024 IEEE 17th International Conference on Signal Processing (ICSP)
Year: 2024 | Conference Paper |
Under the near-field condition, the wavenumber spectrum is spatially variant, and its center and size are both related to the target positions, which increases the difficulty of imaging processing and sidelobe suppression. In this article, a novel two-step spectrum calibration method is proposed to eliminate the correlation between the wavenumber spectrum and the target position. This method first...Show More
Cut to the Chase: A Fast-Decoding Scheme for Symbiotic Backscatter Multi-User NOMA Systems
Zhen Wen;Haiyang Ding;Maged Elkashlan;Dong Li;Chau Yuen;Jules M. Moualeu;Mingkai Chen;Zhongwei Liu
2024 16th International Conference on Wireless Communications and Signal Processing (WCSP)
Year: 2024 | Conference Paper |
This paper proposes a fast-decoding scheme based on the successive interference cancellation (SIC) framework for symbiotic backscatter multi-user non-orthogonal multiple access (NOMA) systems, which aims to decode the desired primary NOMA signal and the backscatter signal for the end-users in an efficient manner. Under the proposed decoding framework, we derive the symbiotic constraints on the dec...Show More
Ergodic Capacity Analysis for a STAR-RIS-Segmented Symbiotic Backscatter NOMA System
Zhen Wen;Haiyang Ding;Maged Elkashlan;Chau Yuen;Jules M. Moualeu
2024 IEEE 35th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)
Year: 2024 | Conference Paper |
This paper proposes a simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) segmented symbiotic backscatter non-orthogonal multiple access (NOMA) system. Specifically, the STAR-RIS is divided into an enchancing primary signal (EP) zone and a backscatter device (BD) zone. To characterize the overall transmission effectiveness, the metric of sum ergodic capacity (EC)...Show More
Riding over Multiuser NOMA Carrier: A Spectrally-Efficient RIS-Enabled Symbiotic Backscatter System
Mingkai Chen;Haiyang Ding;Maged Elkashlan;Chau Yuen;Jules M. Moualeu;Shilian Wang;Zhen Wen;Fambirai Takawira
2024 IEEE 100th Vehicular Technology Conference (VTC2024-Fall)
Year: 2024 | Conference Paper |
This paper puts forth a proposal for a reconfigurable intelligent surface (RIS) enabled symbiotic backscatter system riding over a multiuser non-orthogonal multiple access (NOMA) carrier, where the RIS is employed as a substitute for the conventional backscatter device (BD) with the objective of enhancing both primary NOMA transmission and backscatter communications. In particular, a symbiotic mec...Show More
STAR-RIS Assisted Reliable and Secure Transmissions in Wireless-Powered Communications
Siwei Tang;Kunrui Cao;Lu Lv;Haiyang Ding;Beixiong Zheng;Jingyu Chen;Danyu Diao;Buhong Wang
This article investigates a reliable and secure wireless-powered communication system assisted by a simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) serving indoor and outdoor users. To align with practical application, we consider two eavesdropping conditions: mixed and indirect eavesdropping links. To improve the reliability and security of downlink energy t...Show More
Metasurfaces for Polarization-Insensitive and Directional Backscatter Communications
Haipeng Li;Kewei Xin;Jiaqi Han;Haiyang Ding;Chaoyang Liu;Fei Wang;Xiaowen Liu;Letian Wang;He-Xiu Xu
Achieving low-power and polarization-insensitive communication is a crucial and challenging task in the Internet of Everything. In this communication, we propose and demonstrate the implementation of two amplitude-reconfigurable metasurfaces, loaded with p-i-n diodes and operated around 5.8 GHz, to develop a novel polarization-insensitive backscatter communication (BC) system. Both communication t...Show More
Breaking the Interference and Fading Gridlock in Backscatter Communications: State-of-the-Art, Design Challenges, and Future Directions
Bowen Gu;Dong Li;Haiyang Ding;Gongpu Wang;Chintha Tellambura
As the Internet of Things (IoT) advances by leaps and bounds, a multitude of devices are becoming interconnected, marking the onset of an era where everything is connected. While this growth opens up opportunities for novel products and applications, it also leads to increased energy reliance on IoT devices, creating a significant bottleneck that hinders sustainable progress. Backscatter communica...Show More
Ergodic Secrecy Capacity Analysis for RIS-Aided Wireless Powered Communication System Under Different Phase Shifting
Jingyu Chen;Kunrui Cao;Lu Lv;Haiyang Ding;Runze Dong;Tianhao Cheng;Danyu Diao
This paper investigates the physical layer security (PLS) of reconfigurable intelligent surface (RIS) aided wireless powered communication (WPC) system, where an energy-limited user first harvests energy from a hybrid access point (HAP) and then uses the harvested energy to transmit information in the presence of a passive eavesdropper. In particular, four phase shifting designs at RIS are conside...Show More
Outage Analysis for a STAR-RIS-Segmented Symbiotic Backscatter NOMA System
Zhen Wen;Haiyang Ding;Maged Elkashlan;Chau Yuen;Jules M. Moualeu;Jiyang Liu;Kewei Xin;Chenhao Yang
This paper proposes a simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) segmented symbiotic backscatter non-orthogonal multiple access (NOMA) system, where the STAR-RIS is composed of an enhancing primary signal (EP) zone and a backscatter device (BD) zone. To evaluate the overall system transmission reliability, we derive a tight lower bound of the coexistence...Show More
A STAR-RIS-Segmented Symbiotic AmBC System
Jiyang Liu;Haiyang Ding;Maged Elkashlan;Weiyu Chen;Shilian Wang;Teng Sun
This letter proposes a simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) segmented symbiotic ambient backscatter system. The elements of the STAR-RIS are segmented into an enhancing primary-signal (EP) zone and a backscatter-device (BD) zone, which are adjusted to enhance receivers’ reception of the primary signal from S and to convey STAR-RIS’s information, ...Show More
Covert Communication Based on Noise Uncertainty Against Multi-Antenna Detection: Analyses of Limit Covert and Reliable Rate
Weiyu Chen;Haiyang Ding;Shilian Wang;Li Hu;Junshan Luo;Fengkui Gong
Uncertainty about noise variance is unavoidable. Many existing works exploited the noise uncertainty for covert communication and meanwhile assumed that the adversary third party Willie adopts a radiometer detector, in which case a positive covert and reliable rate $\mathcal {O}(N) {\mathrm{ bits}}/{N}$ channel uses is achievable. Nonetheless, the radiometer is not optimal in general. The limit ...Show More
A RIS-Segmented Symbiotic Ambient Backscatter Communication System
Hancheng Yang;Haiyang Ding;Kunrui Cao;Maged Elkashlan;Haipeng Li;Kewei Xin
This article proposes a reconfigurable intelligent surface (RIS) segmented symbiotic ambient backscatter system, which is composed of a primary source (S), a RIS, and a cooperative receiver (D) that decodes the signals from S and RIS with the aid of successive interference cancellation (SIC). For such, the RIS is segmented into two zones, namely, an EP zone and a BD zone, where the EP zone is used...Show More
A Nonlinear Modulation and Demodulation Method Design Applied to RIS Communication System
2023 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)
Year: 2023 | Conference Paper |
To meet the demand of information modulation and demodulation in RIS communication system, this paper realizes a signal modulation and demodulation method that can realize 16QAM communication by manipulating the phase of electromagnetic signal in space only by RIS. This modulation and demodulation method relies on the RIS system that can continuously adjust the phase of the signal, which can contr...Show More
On the Limits of Covert Backscatter Communication Over Undecodable Ambient Signals
Weiyu Chen;Haiyang Ding;Shilian Wang;Fengkui Gong;Guojiang Xia
This paper investigates the limit covert rate of the backscatter communication systems based on undecodable ambient radio frequency (RF) signals over additive white Gaussian noise channel. In the considered network, source node Alice expects to transmit information to receiver Bob without being detected by warden Willie, by backscattering undecodable ambient RF signals. In this case, it is challen...Show More
Physical-Layer Security for Intelligent-Reflecting-Surface-Aided Wireless-Powered Communication Systems
Kunrui Cao;Haiyang Ding;Lu Lv;Zhou Su;Jing Tao;Fengkui Gong;Buhong Wang
IEEE Internet of Things Journal
Cited by: Papers (15)
This article investigates physical-layer security (PLS) of a typical wireless-powered communication (WPC) system with the aid of intelligent reflecting surface (IRS) in the presence of a passive eavesdropper for Internet of Things (IoT), and proposes three IRS-aided secure WPC modes. Specifically, in mode-I, the IRS is deployed between hybrid access point (HAP) and wireless user (U) for co-located...Show More
A Novel Symbiotic Backscatter-NOMA System
Hancheng Yang;Haiyang Ding;Maged Elkashlan;Haipeng Li;Kewei Xin
This article proposes a symbiotic backscatter non-orthogonal multiple access (backscatter-NOMA) system, where a backscatter device (BD) conveys its own information $c(n)$ to two users by riding on the NOMA downlink signal. Notably, different from the conventional backscatter-NOMA, the BD adaptively adjusts its reflection coefficient to guarantee the successful decoding of the NOMA downlink signal ...Show More
Opportunistic Symbiotic Backscatter Communication Systems
IEEE Communications Letters
Cited by: Papers (3)
This letter proposes an opportunistic commensal mechanism (OppCom) and an opportunistic parasitic mechanism (OppPar) for a pair of backscatter devices (BDs) to strengthen the concurrent transmission of the primary and the backscatter systems. It is shown that the asymptotic outage probability of the OppCom and OppPar mechanisms is not affected by the channel statistics between the two BDs. Also, f...Show More
Symbiotic Backscatter System over Cascaded Fading Channels
Haiyang Ding;Maged Elkashlan;Hancheng Yang;Haipeng Li;Kewei Xin
2022 IEEE 96th Vehicular Technology Conference (VTC2022-Fall)
Year: 2022 | Conference Paper |
Cascaded fading plays a vital role in backscatter communications but its effect on the transmission robustness of symbiotic backscatter system has not been well understood yet. In this paper, we investigate this effect under three symbiotic mechanisms, namely commensal, parasitic and competitive schemes. Our analysis indicates that: 1) For the commensal scheme, cascaded backscatter fading incurs a...Show More
On the Ergodic Secrecy Capacity of Intelligent Reflecting Surface Aided Wireless Powered Communication Systems
Kunrui Cao;Haiyang Ding;Wei Li;Lu Lv;Mei Gao;Fengkui Gong;Buhong Wang
This letter studies physical layer security (PLS) of an intelligent reflecting surface (IRS) aided wireless powered communication (WPC) system in the presence of a passive eavesdropper, and proposes three secure IRS-WPC modes. In mode-I, the IRS is deployed between hybrid access point (HAP) and wireless user (U) for co-located power station (PS) and access point (AP). In mode-II, the IRS is deploy...Show More
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