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Joint jammer and user scheduling scheme for wireless physical-layer security

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Journal of Southeast University(English Edition) 2016年第3期32卷 261-266页

作者：丁晓进宋铁成邹玉龙陈晓曙东南大学移动通信国家重点实验室南京210096 南京邮电大学通信与信息工程学院南京210003

In order to improve the performance of the security-reliability tradeoff （SRT）, a joint jammer and user scheduling （JJUS） scheme is proposed. First, a user with the maximal instantaneous channel capacity is selected to transmit its signal to the base station （ BS） in the transmission time slot. Then, when the user transmits its signal to BS, the jammer is invoked for transmitting artificial noise in order to perturb the eavesdropper’s reception. Simulation results show that increasing the number of users can enhance the SRT performance of the proposed JJUS scheme. In addition, the SRT performance of the proposed JJUS scheme is better than that of the traditional round-robin scheduling and pure user scheduling schemes. The proposed JJUS scheme can guarantee the secure transmission even in low main-to-eavesdropper ratio（ MER） regions.

关键词： security-reliability tradeoff (SRT) multi-user scheduling artificial noise physical-layer security

Two-dimensional directional modulation with dual-mode vortex beam for security transmission

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Journal of Systems Engineering and Electronics 2022年第6期33卷 1108-1118页

作者： ZHU Changju SONG Maozhong DANG Xiaoyu ZHU Qiuming College of Electronic Information Engineering Nanjing University of Aeronautics and AstronauticsNanjing 211106China

A two-dimensional directional modulation(DM)technology with dual-mode orbital angular momentum(OAM)beam is proposed for physical-layer security of the relay unmanned aerial vehicle(UAV)tracking *** elevation and azimuth of the vortex beam are modulated into the *** can form the digital waveform with the encoding *** the signal is direction-dependent,the modulated waveform is purposely distorted in other directions to offer a security *** concentric uniform circular arrays(UCAs)with different radii are excited to generate dual vortex beams with orthogonality for the composite signal,which can increase the demodulation *** to the phase propagation characteristics of vortex beam,the constellation at the desired azimuth angle will change continuously within a wavelength.A desired single antenna receiver can use the propagation phase compensation and an opposite helical phase factor for the signal demodulation in the desired *** show that the proposed OAM-DM scheme offers a security approach with direction sensitivity transmission.

关键词： directional modulation(DM) orbital angular momentum(OAM) physical-layer security directional sensitivity

Reconfiguring wireless environments via intelligent surfaces for 6G: reflection, modulation, and security

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Science China(Information Sciences) 2023年第3期66卷 60-79页

作者： Jindan XU Chau YUEN Chongwen HUANG Naveed UL HASSAN George C.ALEXANDROPOULOS Marco DI RENZO Mérouane DEBBAH Engineering Product Development Pillar Singapore University of Technology and Design College of Information Science and Electronic Engineering Zhejiang University Department of Electrical Engineering Lahore University of Management Sciences Department of Informatics and Telecommunications National and Kapodistrian University of Athens Technology Innovation Institute Université Paris-Saclay CNRS Centrale Supélec Laboratoire des Signaux et Systèmes

The reconfigurable intelligent surface(RIS) has been recognized as an essential enabling technology for sixth-generation(6G) mobile communication networks. An RIS comprises a large number of small and low-cost reflecting elements whose parameters can be dynamically adjusted with a programmable *** of these elements can effectively reflect a phase-shifted version of the incident electromagnetic wave. By configuring the wave phases in real time, the propagation environment of the information-bearing signals can be dynamically manipulated to enhance communication reliability, boost transmission rate, expand cellular coverage, and strengthen communication security. In this study, we provide an overview on RIS-assisted wireless communications. Specifically, we elaborate on the state-of-the-art enabling techniques for the RIS technology as well as their corresponding substantial benefits from the perspectives of RIS reflection and RIS modulation. With these benefits, we envision the integration of RISs into emerging applications for6G. In addition, communication security is of unprecedented importance in future 6G networks with ubiquitous wireless services in multifarious verticals and areas. We highlight potential contributions of RISs to physical-layer security, in terms of secrecy rate and secrecy outage probability, exemplified by a typical case study from both theoretical and numerical aspects. Finally, we discuss challenges and opportunities on the deployment of RISs in practice to motivate future research.

关键词： reconfigurable intelligent surface physical-layer security RIS-assisted wireless communications phase modulation 6G

A Novel Ensemble Learning Algorithm Based on D-S Evidence Theory for IoT security

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Computers, Materials & Continua 2018年第12期57卷 635-652页

作者： Changting Shi College of Computer Science and Technology Harbin Engineering UniversityHarbin150001China

In the last decade,IoT has been widely used in smart cities,autonomous driving and Industry 4.0,which lead to improve efficiency,reliability,security and economic ***,with the rapid development of new technologies,such as cognitive communication,cloud computing,quantum computing and big data,the IoT security is being confronted with a series of new threats and *** device identification via Radio Frequency Fingerprinting(RFF)extracting from radio signals is a physical-layer method for IoT *** physical-layer,RFF is a unique characteristic of IoT device themselves,which can difficultly be *** as people’s unique fingerprinting,different IoT devices exhibit different RFF which can be used for identification and *** this paper,the structure of IoT device identification is proposed,the key technologies such as signal detection,RFF extraction,and classification model is ***,based on the random forest and Dempster-Shafer evidence algorithm,a novel ensemble learning algorithm is *** theoretical modeling and experimental verification,the reliability and differentiability of RFF are extracted and verified,the classification result is shown under the real IoT device environments.

关键词： IoT security physical-layer security radio frequency fingerprinting random Forest evidence theory

SCIM: Incorporating secure communication and interference management in one operation

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Digital Communications and Networks 2023年第2期9卷 512-522页

作者： Zhao Li Pintian Lyu Jun Li Zhixian Chang Jia Liu Zheng Yan School of Cyber Engineering Xidian UniversityXi'an710126China Technol.on Commun.Net.Lab The 54th Research Inst.of China Elec.Technol.Group CorpShijiazhuang050081China School of Telecommun.and Inf.Engineering Xi'an University of Posts&TelecommunXi'an710071China School of Computer Science and Technology Xidian UniversityXi'an710126China The Department of Comnet Aalto UniversityEspoo02150Finland

Due to the broadcast nature of wireless communications,users’data transmitted wirelessly is susceptible to security/privacy ***,as a result of the limitation of spectrum resources,massive wireless connections will incur serious interference,which may damage the efficiency of data ***,improving both efficiency and secrecy of data transmission is of research *** this paper,we propose a wireless transmission scheme by taking both Secure Communication(SC)and Interference Management(IM)into account,namely *** this scheme,an SCIM signal is generated by the legitimate transmitter(Tx)and sent along with the desired signal,so that the SCIM signal can interact with and suppress the environmental interference at the legitimate receiver(Rx).Meanwhile,the SCIM signal may interfere with the eavesdropper in the coverage of legitimate transmission so as to deteriorate the eavesdropping ***,the secrecy of desired transmission is *** this way,both the transmission efficiency and privacy are ***,by taking various transmission preferences into account,we develop different implementations of SCIM,including Interference Suppression First SCIM(ISF-SCIM),Data Transmission First SCIM(DTF-SCIM),Anti-Eavesdropping First SCIM(AEF-SCIM),and Secrecy Rate Maximization SCIM(SRM-SCIM).Our in-depth simulation results have shown the proposed methods to effectively improve the efficiency and secrecy of the legitimate transmission.

关键词： physical-layer security Secure communication Anti-eavesdropping Interference management Secrecy rate

Robust secrecy beamforming for full-duplex two-way relay networks under imperfect channel state information

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Science China(Information Sciences) 2018年第2期61卷 115-124页

作者： Si LI Qiang LI Shihai SHAO National Key Laboratory of Science and Technology on Communications University of Electronic Science and Technology of China School of Communication and Information Engineering University of Electronic Science and Technology of China

Consider a two-way amplify-and-forward(AF) relay network where two legitimate nodes communicate through a relay in the presence of an eavesdropper. Assuming full duplexity at the legitimate nodes and the relay, a robust artificial noise(AN)-aided AF scheme is proposed to maximize the worst-case sum secrecy rate under imperfect channel state information(CSI) of the eavesdropper. This robust sum secrecy rate maximization(SSRM) problem is formulated as a max-min semi-infinite problem and is tackled by the semidefinite relaxation(SDR) method. In particular, we first convert the max-min semi-infinite problem into a maximization problem with a finite number of constraints. Then, an efficient two-block alternating difference-of-concave(DC) programming approach is proposed to iteratively solve the SDR problem, with one of the blocks computed in closed form. In addition, a specific robust rank-one solution construction procedure is presented to extract a feasible solution for the original robust SSRM problem from the SDR solution. The efficacy of the proposed method is demonstrated by numerical simulations.

关键词： physical-layer security full-duplex relay difference-of-concave program semidefinite relaxation MIMO

Secure Transmissions in Wireless Multiuser Networks Using Message Correlation

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China Communications 2022年第2期19卷 186-200页

作者： Hongliang He Libo Wang School of Mechanical Engineering and Electronic Information China University of GeosciencesWuhan 430074China College of Information Science and Technology&College of Cyber security Jinan UniversityGuangzhou 510632China

Due to the openness of wireless multiuser networks,the private information transmitted in uplink or downlink is vulnerable to ***,when the downlink transmissions use nonorthogonal multiple access(NOMA)techniques,the system further encounters interior *** order to address these security problems,we study the secret communication in multiuser networks with both uplink and downlink ***,in uplink transmissions,the private messages transmitted in each slot are correlated,so any loss of the private information at the eavesdropper will prevent the eavesdropper from decoding the private information in later time *** downlink transmissions,the messages are correlated to the uplink *** this way,any unexpected users who lose the expected user’s uplink information cannot decode its downlink *** intercept probability is used to measure security performance and we analyze it in ***,simulation results are provided to corroborate our theoretical analysis.

关键词： physical-layer security multiuser networks user selection message correlation NOMA

Joint Trajectory and Power Optimization for Securing UAV Communications Against Active Eavesdropping

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China Communications 2021年第1期18卷 88-99页

作者： Bin Duo Junsong Luo Yilian Li Hao Hu Zibin Wang College of Information Science and Technology Chengdu University of TechnologyChengdu 610059China National Key Laboratory of Science and Technology on Information System security Beijing 100093China

Due to both of jamming and eavesdropping,active eavesdroppers can induce more serious security threats to unmanned aerial vehicle(UAV)-enabled *** paper considers a secure UAV communication system including both the downlink(DL)and uplink(UL)transmissions,where the confidential information is transmitted between a UAV and a ground node in the presence of an active *** aim to maximize the average secrecy rates of the DL and UL communications,respectively,by jointly optimizing the UAV trajectory and the UAV/ground node’s transmit power control over a given flight *** to the non-convexity of the formulated problems,it is difficult to obtain globally optimal ***,we propose efficient iterative algorithms to obtain high-quality suboptimal solutions by applying the block coordinate descent and successive convex optimization *** results show that the joint optimization algorithms can effectively improve the secrecy rate performance for both the DL and UL communications,as compared with other baseline *** proposed schemes can be considered as special cases of UAV-assisted non-orthogonal multiple access(NOMA)networks.

关键词： UAV communications active eavesdropping physical-layer security secrecy rate maximization power control trajectory design

Secure Short-Packet Transmission in Uplink Massive MU-MIMO Assisted URLLC Under Imperfect CSI

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China Communications 2023年第12期20卷 196-211页

作者： Tian Yu Xiaoli Sun Yueming Cai Zeyuan Zhu Army Engineering University of PLA Nanjing 210007China Unit 31401 of PLA Jinan 250002China PLA Strategic Support Force Information Engineering University Zhengzhou 450001China

Ultra-reliable and low-latency communication(URLLC)is still in the early stage of research due to its two strict and conflicting requirements,i.e.,ultra-low latency and ultra-high reliability,and its impact on security performance is still ***,short-packet communication is expected to meet the delay requirement of URLLC,while the degradation of reliability caused by it makes traditional physical-layer security metrics not *** this paper,we investigate the secure short-packet transmission in uplink massive multiuser multiple-inputmultiple-output(MU-MIMO)system under imperfect channel state information(CSI).We propose an artificial noise scheme to improve the security performance of the system and use the system average secrecy throughput(AST)as the analysis *** derive the approximate closed-form expression of the system AST and further analyze the system asymptotic performance in two ***,a one-dimensional search method is used to optimize the maximum system AST for a given pilot *** results verify the correctness of theoretical analysis,and show that there are some parameters that affect the tradeoff between security and ***,appropriately increasing the number of antennas at the base station(BS)and transmission power at user devices(UDs)can increase the system AST to achieve the required threshold.

关键词： average secrecy throughput imperfect CSI massive MU-MIMO physical-layer security short-packet