scholarly journals Covert Anti-Jamming Communication Based on Gaussian Coded Modulation

2021 ◽  
Vol 11 (9) ◽  
pp. 3759
Author(s):  
Haeung Choi ◽  
Sangjun Park ◽  
Heung-No Lee
Keyword(s):  
Communication System ◽  
Communication Systems ◽  
Coded Modulation ◽  
Probability Of Detection ◽  
Wireless Communication Systems ◽  
Modulation Scheme ◽  
Signal Recovery ◽  
Time Frequency ◽  
Frequency Domains ◽  
Receiver Algorithms

In several wireless communication systems, robustness against jammers and covertness against eavesdroppers are required simultaneously. In this paper, we propose a novel covert anti-jamming communication system. The properties of both anti-jamming and covertness are achieved through the Gaussian-coded time-frequency modulation scheme. We propose two receiver algorithms based on the sparse signal recovery framework. The receiver algorithms estimate and remove the jamming signal from the received signal. In addition, it is difficult to distinguish the proposed signal from the actual Gaussian noise in both the time and frequency domains. We compare the covertness of the proposed communication system with that of a conventional digital modulation system in terms of the probability of detection. We numerically evaluated the bit error rate of the proposed system to demonstrate its anti-jamming performance.

Introduction to Wireless Endogenous Security and Safety: Problems, Attributes, Structures and Functions

2021 ◽  
Author(s):  
Xiaoyan Hu ◽  
Liang Jin ◽  
Yangming Lou ◽  
Zhou Zhong ◽  
Xiaoli Sun
Keyword(s):  
Wireless Communication ◽  
Communication System ◽  
Communication Systems ◽  
Wireless Channel ◽  
Communication Security ◽  
Wireless Communication Systems ◽  
Functional Safety ◽  
Wireless Communication System ◽  
Safety Technology ◽  
Safety Attributes

Abstract: The information security and functional safety of wireless communication systems have become the focus of current research. The endogenous security principle based on Dynamic Heterogeneous Redundancy provides a direction for the development of wireless communication security and safety technology. This paper introduces the concept of wireless endogenous security from the following four aspects. First, we sorts out the endogenous security problems faced by the current wireless communication system, and then analyzes the endogenous security and safety attributes of the wireless channel. After that, the endogenous security and safety structure of the wireless communication system is given, and finally the applications of the existing wireless communication endogenous security and safety functions are listed. <br>

scholarly journals A wireless communication system for energy and environmental monitoring

2017 ◽  
Vol 6 (1) ◽  
pp. 19-26 ◽  
Author(s):  
Dmytro Krush ◽  
Christoph Cammin ◽  
Ralf Heynicke ◽  
Gerd Scholl ◽  
Bernd Kaercher
Keyword(s):  
Wireless Communication ◽  
Environmental Monitoring ◽  
Communication System ◽  
Communication Systems ◽  
Measurement Data ◽  
Shop Floor ◽  
Wireless Communication Systems ◽  
Wireless Communication System ◽  
Physical Sensor ◽  
Wireless Standards

Abstract. Custom-fit communication systems are key elements in modern cyber-physical sensor systems. Therefore a wireless communication system (WCS) for sensor/actuator communication has been developed to facilitate energy and environmental monitoring on the shop floor of industrial production sites. Initially, the distinct demands and requirements are described. As the WCS has been designed for new installations as well as for retrofitting already installed facilities, the WCS has to be able to coexist with other wireless communication systems already allocated in the same frequency band. The WCS handles measurement data from both, energy-autarkic sensors and fast line-powered sensors. Mobile users in the field equipped with mobile devices are served by the system, too. A modular hardware concept has been chosen for easy system modification or for the integration of new wireless standards. Finally, measured results for the coexistence capability are presented.

scholarly journals Cooperative beamforming for a double-IRS-assisted wireless communication system

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Guodong Tian ◽  
Rongfang Song
Keyword(s):  
Wireless Communication ◽  
Communication System ◽  
Communication Systems ◽  
Signal To Noise Ratio ◽  
Pso Algorithm ◽  
Base Station ◽  
Wireless Communication Systems ◽  
Wireless Communication System ◽  
Power Simulation ◽  
Reflecting Surface

AbstractIntelligent reflecting surface (IRS) has emerged as an innovative and disruptive solution to boost the spectral and energy efficiency and enlarge the coverage of wireless communication systems. However, the existing literature on IRS mainly concentrates on wireless communication systems assisted by single or multiple distributed IRSs, which are not always effective. In view of this issue, this paper considers a special double-IRS-assisted wireless communication system, where IRS1 and IRS2 are deployed near the base station (BS) and the user, respectively, and the transmitted signals reach the user via the cascaded BS-IRS1-IRS2-user channel only. We cooperatively optimize transmit and passive beamforming on the two IRSs based on the particle swarm optimization (PSO) algorithm to maximize the received signal power. Simulation indicates that despite no direct line-of-sight (LoS) path from the BS to the user, an excellent signal-to-noise ratio (SNR) is available at the receiver with the aid of two IRSs, which demonstrates that it is feasible to assist communication by double reflection links composed of two IRSs. Additionally, we unexpectedly find that when the positions of the two IRSs are fixed, by exchanging the positions of the BS and the user, the obtainable SNRs are similar.

Investigation of the Performance of OOK, 2DPSK, QDPSK in Downlink of Ground-to-Satellite Laser Communication Systems

2013 ◽  
Vol 411-414 ◽  
pp. 749-752
Author(s):  
Ming Hui Tang ◽  
Mi Li ◽  
Yan Li ◽  
Jia Chen Ding ◽  
Guo Liang Xu
Keyword(s):  
Error Rate ◽  
Communication System ◽  
Communication Systems ◽  
Laser Communication ◽  
Modulation Scheme ◽  
Combined Effects ◽  
Advantages And Disadvantages ◽  
Satellite Laser Communication ◽  
Noise Simulation ◽  
Simulation Results

With the development of satellite laser communication, modulation scheme has been the key technique for the modulation subsystem. The performance in terms of bite-error rate of OOK, 2DPSK, QDPSK used in the downlink of the ground-to-satellite laser communication systems are compared with the consideration of the combined effects of both intensity scintillation and detector noise. Simulation results are given and the advantages and disadvantages of the three modulation schemes are also studied. The design of the downlink of ground-to-satellite laser communication system can benefit from this work.

scholarly journals Introduction to Wireless Endogenous Security and Safety: Problems, Attributes, Structures and Functions

2021 ◽  
Author(s):  
Xiaoyan Hu ◽  
Liang Jin ◽  
Yangming Lou ◽  
Zhou Zhong ◽  
Xiaoli Sun
Keyword(s):  
Wireless Communication ◽  
Communication System ◽  
Communication Systems ◽  
Wireless Channel ◽  
Communication Security ◽  
Wireless Communication Systems ◽  
Functional Safety ◽  
Wireless Communication System ◽  
Safety Technology ◽  
Safety Attributes

Abstract: The information security and functional safety of wireless communication systems have become the focus of current research. The endogenous security principle based on Dynamic Heterogeneous Redundancy provides a direction for the development of wireless communication security and safety technology. This paper introduces the concept of wireless endogenous security from the following four aspects. First, we sorts out the endogenous security problems faced by the current wireless communication system, and then analyzes the endogenous security and safety attributes of the wireless channel. After that, the endogenous security and safety structure of the wireless communication system is given, and finally the applications of the existing wireless communication endogenous security and safety functions are listed. <br>

scholarly journals PROPERTIES AND FORMATION OF OFDM AND DERIVED SIGNALS

2020 ◽  
pp. 257-266
Author(s):  
Alexander Zamula ◽  
Vladyslav Morozov ◽  
Nataliya Kalashnykova ◽  
Robert Brumnik
Keyword(s):  
Communication Systems ◽  
Wireless Communication Systems ◽  
Modulation Scheme ◽  
Broadband Access ◽  
Frequency Division ◽  
Alternative Technologies ◽  
Telecommunication Systems ◽  
Wireless Broadband ◽  
Points Of View ◽  
Time Division

The article discusses the technology of forming signals used in mobile, information and telecommunication systems, and also provides an analysis of promising technologies that can be used in wireless communication systems of broadband access. It is shown that the widely used modulation scheme with orthogonal frequency division (OFDM) has a number of drawbacks, which can lead to a decrease in system performance. Alternative technologies for generating signals are presented, in particular, a technology based on windowed signal processing (W-OFDM), a technology based on time division (w-OFDM); UFMC technology and others to eliminate the disadvantages of OFDM technology. New points of view are proposed on the use of multi-carrier transmission technology in the form of multiplexing with orthogonal frequency division (in order to increase the security of modern wireless broadband access communication systems from external and internal threats), a class of non-linear discrete cryptographic sequences to form a physical data carrier – signal.

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