Wireless Communications - Science topic

The Age of Information (AoI) has emerged as a critical performance metric for evaluating time-sensitive wireless communications systems, where maintaining freshness of information and transmission reliability is crucial. In modern ultra-reliable low-latency communication networks, short-packet transmissions are essential for energy efficiency and l...

Due to its better power efficiency, pulsed modulation such as on-off keying (OOK) has the potential of maximizing reach and minimizing energy consumption for future high data rate optical wireless communication (OWC), especially LiFi systems. In this paper, we introduce enhancements of the OOKbased Pulsed Modulation Physical Layer (PM-PHY) defined...

Against the backdrop of the rapid development of wireless communication technology, the complex signal interference issues in the electromagnetic spectrum environment have become a key factor affecting the quality and reliability of signal transmission. Existing solutions, such as traditional interference suppression techniques that rely on static...

This work introduces a broad framework for the enhanced nonlinearity assessment of PAs for 5G FR1 in UAV–RIS networks with integration. This study employs LabVIEW-based double-frequency IMD3 testing methodology for a fast automatic test bed to quantify the nonlinearity and its EMI effect on the UAV–RIS system. The analysis includes the evaluation o...

Wireless communication systems face many challenges due to fluctuating channel conditions resulting in variable error rates and demands robust error management tactics. Traditional Automatic Repeat Request (ARQ) methods suffer from high communication overhead and latency and are inefficient in handling retransmissions. Although traditional Hybrid A...

Metasurfaces provide an unprecedented capability for manipulating electromagnetic waves. In this study, a wideband and high‐gain folded transmit‐array antenna (FTA) based on a 3‐bit Fabry–Perot transmission polarizer (FPTP) metasurface was proposed and realized. The proposed FTA comprises three key components: (1) top‐layer FPTP metasurface, (2) bo...

This study presents a coplanar waveguide (CPW)-fed monopole antenna engineered for super-wideband (SWB) applications. The antenna is designed to resonate at frequencies ranging from 2.44 GHz to over 25 GHz. The prototype is built on an F4B substrate with dimensions of 34 × 36 mm² and a thickness of 1 mm. The distance from the ground to the feed lin...

Optical wireless communication (OWC) is envisioned as a key enabler for immersive indoor data transmission in future wireless communication networks. However, multi-user interference management arises as a challenge in dense indoor OWC systems composed of multiple optical access points (APs) serving multiple users. In this paper, we propose a novel...

In wireless communication systems the demand for spectrum resources are increasing rapidly due to increasing spectrum utilization that causes scarceness of the spectrum frequency bands, the Cognitive Radio Network is considered the best solution for this problem, and its cooperated network if it merges with Relay technology. The resource allocation...

Dynamic optical beam manipulation is vital for advancing photonic technologies, including light detection and ranging (LiDAR), free-space optical wireless communication (OWC), three-dimensional imaging, and dynamic holography. Traditional non-mechanical beam-steering methods, such as optical phase arrays, spatial light modulators, and focal plane s...

Unlock the future of connectivity where algorithms power intelligent communication systems. Machine Learning for Wireless Communication: Principles and Applications is your essential guide to the transformative synergy between machine learning and next-generation wireless technologies. Whether you're a researcher, student, or industry professional,...

Abstract— Smart patient monitoring enhances requirement of implantable antenna for transferring the sensed health parameters wirelessly to external monitoring devices. Use of Starch-nanoparticle (St-NP) as a biocompatible encapsulation of implantable antenna instead of previously used materials (Teflon, MACOR etc.) provides several advantages like...

This research introduces a novel approach to enhance energy efficiency in Mobile-Edge Computing (MEC) systems by integrating Non-Orthogonal Multiple Access (NOMA) with energy harvesting in a full-duplex (FD) environment. The primary objective is to optimize edge computing performance while minimizing energy consumption. A comprehensive resource all...

Electromagnetic absorbers combining ultrathin profiles with robust absorptivity across wide incidence angles are essential for applications such as stealth technology, wireless communications, and quantum computing. Traditional designs, including Salisbury screens, typically require thicknesses of at least a quarter-wavelength (lambda/4), which lim...

The earliest underwater wireless communication technology originated in 1490, when Leonardo da Vinci suggested using acoustic methods to detect ships via hollow tubes submerged in water, laying the groundwork for modern acoustic communication. Substantial progress was made in the 20th century, which catalyzed the evolution of electromagnetic wave a...

The article analyzes modern IoT technologies for automated access control systems. The architecture of such systems, key components and innovative approaches, including biometric authentication, wireless communication protocols and the use of artificial intelligence, are considered. The advantages of integrating IoT into security systems and prospe...

We present experimental validation results of a pulse-width-dependent antenna based on a waveform-selective metasurface that behaves differently according to the incoming waveform, more specifically, the incoming pulse width, even at a fixed frequency. This waveform-selective behavior is integrated with an antenna design to preferentially accept a...

The paper explores the joint optimization of beamforming and phase shifts in Intelligent Reflecting Surface (IRS)-aided Non-Orthogonal Multiple Access (NOMA) systems within the context of 6G networks. We propose a novel algorithm that optimizes the beamforming vectors at the base station (BS) and the phase shifts at the IRS to maximize the sum rate...

This paper provides a comprehensive review of the design and implementation of software-defined radio (SDR) systems based on the GNU Radio platform and Universal Software Radio Peripheral (USRP) hardware in China. The study highlights the evolution of wireless communication technologies, emphasizing the technical advantages of SDR, including flexib...

The emergence of sixth-generation and beyond communication systems is expected to fundamentally transform digital experiences through introducing unparalleled levels of intelligence, efficiency, and connectivity. A promising technology poised to enable this revolutionary vision is the wireless large AI model (WLAM), characterized by its exceptional...

The automotive industry has been a prime target for cybercriminals for decades, with attacks becoming more sophisticated as vehicles integrate advanced digital technologies. In response, new standards and regulations have been introduced, requiring manufacturers to implement robust cybersecurity measures to obtain necessary certifications. Modern v...

The advent of 5G technology marks a significant milestone in the evolution of wireless communication, promising faster speeds, ultra-low latency, and enhanced connectivity. This transformation is poised to have a profound impact on the Internet of Things (IoT), a network of interconnected devices that rely on seamless communication to provide intel...

Pinching antennas, implemented by applying small dielectric particles on a waveguide, have emerged as a promising flexible-antenna technology ideal for next-generation wireless communications systems. Unlike conventional flexible-antenna systems, pinching antennas offer the advantage of creating line-of-sight links by enabling antennas to be activa...

The emergence of 5G and the exploration of beyond-5G (B5G) and 6G networks have introduced new paradigms in wireless communication, characterized by ultra-high data rates, massive connectivity, and ultra-low latency. Real-time signal processing has become a critical enabler of these technologies, particularly in the areas of beamforming and channel...

In recent years, multiple-input-multiple-output (MIMO) antennas with the ability to radiate waves in more than one pattern and polarization play a great role in modern telecommunication system. This paper provides a theoretical review of different mutual coupling reduction techniques in MIMO antenna systems. The increase in the mutual coupling can...

To accommodate the antenna demand for rural communication and safety monitoring a shared aperture muti-port antenna sensor is presented for three different operating frequencies covering both Sub- 6 GHz and 5G millimeter-wave bands. The antenna sensor is designed on a single substrate, while different ports are connected to different radiating elem...

Generalized Nash Equilibrium is an extended version of the standard Nash Equilibrium with important implications in real-life problems such as economics, wireless communication, the electricity market, or engineering among other areas. In this paper, we propose a first approach to computing Generalized Nash Equilibria using Membrane Computing techn...

The healthcare industry has undergone a significant transformation with the advent of the Internet of Medical Things (IoMT), enabling remote diagnosis, monitoring, and treatment of patients without requiring the physical presence of physicians. However, using open wireless communication channels to transmit sensitive information introduces vulnerab...

In the context of the booming development of wireless communication technology today, although orthogonal frequency division multiplexing (OFDM) technology is widely used, the high peak-to-average power ratio (PAPR) issue significantly constrains its performance enhancement. This paper is dedicated to studying the OFDM transmission system based on...

The proliferation of wireless communication technologies, particularly Wi-Fi, has revolutionized digital connectivity but has also introduced new security vulnerabilities. One of the most insidious and difficult-to-detect threats within Wi-Fi environments is the Man-in-the-Middle (MitM) phishing attack. These attacks enable adversaries to stealthil...

Orthogonal Time Frequency Space (OTFS) modulation has emerged as a robust solution to address the high Doppler sensitivity inherent in Orthogonal Frequency Division Multiplexing (OFDM) systems. In this technique, the information-carrying signals are defined in the delay-Doppler domain and its time-domain equivalent signal is transmitted. The conven...

In Multiple Input Multiple Output (MIMO) wireless communication systems, the number of antennas at both transmitter and receiver significantly influences spatial multiplexing and diversity gain, enhancing communication reliability. Massive MIMO systems, characterized by large antenna arrays, improve spectral efficiency (SE) and reduce power consump...

Future 6 th Generation (6G) networks will rely on Terahertz (THz) wireless communication as their main enabler for delivering both ultra-high data speed and minimal delay. THz wireless systems become crucial for upcoming communications by using Unmanned Aerial Vehicles (UAVs) together with Intelligent Reflecting Surfaces (IRS) while improving relia...

The integration of material science into wireless communication has facilitated the development of textile-based antennas, particularly for wearable 5 G and next-generation communication systems, including military Défense applications. This paper presents a multi-band, natural fabric-based MIMO antenna featuring a Lorentz-shaped fractal structure...

Artificial intelligence (AI) is pivotal in advancing fifth-generation (5G)-Advanced and sixth-generation systems, capturing substantial research interest. Both the 3rd Generation Partnership Project (3GPP) and leading corporations champion AI's standardization in wireless communication. This piece delves into AI's role in channel state information...

This paper presents a compact and miniaturized microstrip antenna (MA) using a slow wave artificial dielectric substrate (SW‐ADS). The antenna substrate consists of two rows of metal cylinders connected to the ground plane along with another row of metal cylinders connected to the feed line of the patch to increase its effective dielectric constant...

As wireless communication technology advances towards faster and higher transmission rates such as Fifth Generation (5G) and beyond, the need for multiple access points increases. The growing demand for access points often results in them occupying any available surface area and potentially disrupting the existing scenery. In order to address this...

The aerial–terrestrial integrated Internet of Things (ATI-IoT) utilizes both aerial platforms (e.g., drones and high-altitude platform stations) and terrestrial networks to establish comprehensive and seamless connectivity across diverse geographical regions. The integration offers significant advantages, including expanded coverage in remote and u...

This paper presents a comparative analysis of intelligent reflecting surface (IRS) technology versus conventional amplify-and-forward (AF) and decode-and-forward (DF) relay schemes in wireless communication. By focusing on transmit power, energy efficiency, and the minimum IRS elements required to outperform traditional relaying, we explore IRS’s p...

Internet of Things (IoT) technology relies on wireless communication between devices through the Internet. Specialized antennas are essential for enabling seamless communication between sensors, smart devices, and network access points. Compact, high-performing antenna designs are becoming more and more in demand as smart services continue to penet...

In this paper, a wideband OAM antenna array for wireless communication is proposed, which has a wide impedance bandwidth and can cover the S-C band with a relative bandwidth of 61.58%. The measured gain can reach 7.81 dBi and the radiation efficiency can reach 74.7%. Compared with similar antennas, the antenna array has a metal back cavity as the s...

Today, there is a need for modern digital means of monitoring the physical condition of rescue workers due to the increase in the volume and complexity of work related to the elimination of the consequences of disasters of various types. The purpose of this work is to improve the safety level of fire and rescue workers by implementing an electronic...

Multifunctional behavioral antennas are one of the significant features of the modern wireless communication. This is due to the fact of the miniaturized size of the devices demand the compact and low-profile antenna covering limited space and provides multi frequency functions over a wide range of spectrum. In view of these perquisites, this paper...

In this paper, we present a transparent and tunable radar‐infrared bi‐stealth metamaterial consisting of an infrared shielding layer (IRSL), a radar‐absorbing layer (RAL), a water substrate, and a metal meshed reflective backplane. The IRSL consists of an array of indium tin oxide square patches, reducing infrared emissivity and transmitting microw...

All wireless communication systems are moving towards higher and higher frequencies day by day which are severely attenuated by rains in outdoor environment. To design a reliable RF system, an accurate prediction method of rain attenuation is established and used globally based on local rain intensity measurement. Required rain intensity used for a...

This study presents the design and performance evaluation of a LoRaWAN-based communication system for enhancing situational awareness in armoured vehicles, with a comparative analysis against GSM networks. Performance metrics such as communication range, latency, security, GPS accuracy, data transmission speed, and power consumption were assessed u...

With the growth of the Internet of Things (IoT) and communication technologies, edge devices have become more diverse. This diversity has increased the computational load on these systems and led to differences between devices. In mobile edge computing, variations in communication and computing resources can prevent some devices from updating model...

Modulation format recognition (MFR) plays a significant role in the adaptive modulation scheme for inter-satellite optical wireless communication (IsOWC) systems. In this paper, a technique based on transfer learning (TL) using convolutional neural network (CNN) is proposed to achieve MFR in IsOWC systems. This approach effectively addresses the ch...

Recently, a novel ultra-low power indoor wireless positioning system has been proposed. In this system, Zero-Energy-Devices (ZED) beacons are deployed in Indoor environments, and located on a map with unique broadcast identifiers. They harvest ambient energy to power themselves and backscatter ambient waves from cellular networks to send their iden...

Quantum dots (QDs) preserve short photoluminescence (PL) lifetime and are widely developed for optical wireless communication (OWC). However, QDs often suffer from surface defects that limit their performance. In this work, we investigate the impact of post-treatment with didodecyldimethylammonium bromide (DDAB) and ${{\rm PbBr}_2}$ on the OWC perf...

Cooperative spectrum sensing (CSS) is essential for improving the spectrum efficiency and reliability of cognitive radio applications. Next-generation wireless communication networks increasingly employ uniform planar arrays (UPA) due to their ability to steer beamformers towards desired directions, mitigating interference and eavesdropping. Howeve...

In recent years, many studies have been conducted on OFDM-based optical wireless communications to develop a 6G communication infrastructure to improve data transmission and reduce the BER. Real-time optimal power management can enhance the data transmission speed and received power in an optical wireless channel under various conditions. This pape...

A promising technique for improving spectral efficiency in wireless communication is Intelligent Reflecting Surfaces (IRS). However, because of significant path loss and obstructions, a single IRS is not enough to provide adequate coverage and beamforming gain in millimeter‐wave (mmWave) networks. To overcome these limitations, this paper investiga...

A hybrid transmitting and reflecting beyond diagonal reconfigurable intelligent surface (BD-RIS) design is proposed. Operating in the same aperture, frequency band and polarization, the proposed BD-RIS features independent beam steering control of its reflected and transmitted waves. In addition it provides a hybrid mode with both reflected and tra...

Wireless sensor networks, integral to applications such as healthcare, environmental monitoring, and defense, operate under constraints of energy, security, and data reliability, making optimization essential. These networks face challenges such as limited battery life, susceptibility to attacks, and maintaining efficient data transmission in dynam...

Electromagnetic applications frequently necessitate precise polarization control, such as converting horizontal polarization to vertical. This work introduces an innovative reflection mode metasurface that rotates the state of linearly polarized electromagnetic waves in the microwave spectrum. The envisioned unit cell has three layers that make up...

As the popularity of smartphones, wearable devices, intelligent vehicles, and countless other devices continues to rise, the surging demand for mobile data traffic has resulted in an increasingly crowded electromagnetic spectrum. Spectrum sharing serves as a solution to optimize the utilization of wireless communication channels, allowing various t...

This paper proposes a new orthogonal time frequency space (OTFS)-based index modulation system called OTFS-aided media-based modulation (MBM) scheme (OTFS-MBM), which is a promising technique for high-mobility wireless communication systems. The OTFS technique transforms information into the delay-Doppler domain, providing robustness against channe...

This paper proposes the orthogonal time frequency space-based code index modulation (OTFS-CIM) scheme, a novel wireless communication system that combines OTFS modulation, which enhances error performance in high-mobility Rayleigh channels, with CIM technique, which improves spectral and energy efficiency, within a single-input multiple-output (SIM...

In next-generation wireless communication, non-orthogonal multiple access (NOMA) emerges as a disruptive technology that allows several users to connect concurrently on a shared time-frequency resource using successive interference cancellation (SIC). Power allocation and user clustering are the main areas of attention for this review, which looks...

Today, pipeline networks serve as critical infrastructure for transporting materials such as water, gas, and oil. Modern technologies such as the Internet of Things (IoT), sensor nodes, and inspection robots enable efficient pipeline monitoring and inspection. They can help detect and monitor various conditions and defects in pipelines such as crac...

We propose a channel estimation protocol to determine the uplink channel state information (CSI) at the base station for an intelligent reflecting surface (IRS) based wireless communication. More specifically, we develop a channel estimation scheme in a multi-user system with high estimation accuracy and low computational complexity. One of the sta...

The growing demand for high-performance wireless communication has necessitated advanced antenna designs with improved bandwidth and efficiency. This study presents a novel dumbbell-shaped slot antenna based on Substrate Integrated Waveguide (SIW) technology. The antenna is engineered to provide extended bandwidth and enhanced radiation characteris...

Terahertz (THz) devices, owing to their distinctive optical properties, have achieved myriad applications in diverse domains including wireless communication, medical imaging therapy, hazardous substance detection, and environmental governance. Concurrently, to mitigate the environmental impact of electronic waste generated by traditional materials...

Orthogonal time frequency space (OTFS) modulation and massive multi-input multi-output (MIMO) are promising technologies for next generation wireless communication systems for their abilities to counteract the issue of high mobility with large Doppler spread and mitigate the channel path attenuation, respectively. The natural integration of massive...

This report investigates the application of deep reinforcement learning (DRL) algorithms for dynamic resource allocation in wireless communication systems. We first created an environment that includes a base station, multiple antennas, and user equipment. Then, we utilized the RLlib library to pass this environment to various DRL algorithms such a...

Electromagnetic information theory (EIT) is one of the emerging topics for 6G communication due to its potential to reveal the performance limit of wireless communication systems. For EIT, one of the most important research directions is degree of freedom (DoF) analysis. Existing research works on DoF analysis for EIT focus on asymptotic conclusion...

This paper investigates the resilience of perception-based multi-robot coordination with wireless communication to online adversarial perception. A systematic study of this problem is essential for many safety-critical robotic applications that rely on the measurements from learned perception modules. We consider a (small) team of quadrotor robots...

This article presents the design of a 4 × 4 MIMO antenna with circular and triangular patches. The design uses a Rogers RT/Duroid 5880™ substrate, with overall antenna dimensions of 50 × 50× 0.8 mm³, a relative permittivity of 2.2, and a loss tangent of 0.009. The patches are placed perpendicularly, i.e., opposite in direction. Antennas 1 and 3 fea...

Consider the signal-to-noise ratio (SNR) of a continuous fluid antenna system (CFAS) operating over a Rayleigh fading channel. In this paper, we extend traditional system assumptions and consider spatially coherent isotropic correlation, continuous positioning of the antenna rather than discrete, and the use of multi-dimensional space (1D, 2D and 3...

In wireless communications, estimation of channels in OFDM systems spans frequency and time, which relies on sparse collections of pilot data, posing an ill-posed inverse problem. Moreover, deep learning estimators require large amounts of training data, computational resources, and true channels to produce accurate channel estimates, which are not...

The Internet of Things (IoT) is revolutionizing communication by connecting everyday objects to the Internet, enabling data exchange and automation. Low-Power Wide-Area networks (LPWANs) provide a wireless communication solution optimized for long-range, low-power IoT devices. LoRa is a prominent LPWAN technology; its ability to provide long-range,...

Maritime communication networks are critical for supporting the increasing demands of oceanic and coastal activities, including shipping, fishing, and offshore operations. However, traditional systems face significant challenges in providing reliable, high-throughput connectivity due to dynamic sea environments, mobility, and non-line-of-sight (NLo...

Ambient backscatter communication (AmBC) has been regarded as an energy- and spectrum-efficient backscatter scheme for the massive Internet of Things (IoT). However, most existing AmBC systems are non-adaptive end-to-end systems, which cannot fully accommodate the forthcoming massive communications of the sixth-generation (6G) wireless communicatio...

Emerging services such as augmented reality (AR) and virtual reality (VR) have increased the volume of data transmitted in wireless communication systems, revealing the limitations of traditional Shannon theory. To address these limitations, semantic communication has been proposed as a solution that prioritizes the meaning of messages over the exa...

The advancement of technology has revolutionised the agricultural industry, transitioning it from labour-intensive farming practices to automated, AI-powered management systems. In recent years, more intelligent livestock monitoring solutions have been proposed to enhance farming efficiency and productivity. This work presents a novel approach to a...

Near-field and radiation coupling between nearby radiating elements is unavoidable, and it is considered a limiting factor for applications in wireless communications and active sensing. This article proposes a density-based topology optimization approach to design decoupling networks for such systems. The decoupling networks are designed based on...

The work in this chapter mainly focusses on a pseudo-noise (PN) sequence generator which is constructed exploiting the features of one-dimensional chaotic systems such as a logistic map. The use of logistic map to generate strong cryptographic sequences is novel in approach in terms of its use with a range of transmission techniques for wireless co...

In our previous work, we have introduced a microwave linear analog computer (MiLAC) as an analog computer that processes microwave signals linearly, demonstrating its potential to reduce the computational complexity of specific signal processing tasks. In this paper, we extend these benefits to wireless communications, showcasing how MiLAC enables...

The construction industry is one of the largest sectors in the world. However, traditional construction remains labor-intensive and currently faces numerous challenges, including project delays, poor quality, and management complexity. As a result, there is a rapidly growing demand for digitization and intelligent transformation within the industry...

Traditional asymptotic information-theoretic studies of the fundamental limits of wireless communication systems primarily rely on some ideal assumptions, such as infinite blocklength and vanishing error probability. While these assumptions enable tractable mathematical characterizations, they fail to capture the stringent requirements of some emer...

Device redundancy is one of the most well-known mechanisms in distributed systems to increase the overall system fault tolerance and, consequently, trustworthiness. Existing algorithms in this regard aim to exchange a significant number of messages among nodes to identify and agree which communication links or nodes are faulty. This approach greatl...

The intelligent reconfigurable surface (IRS) is regarded as a highly promising technology for facilitating and enhancing the performance of future wireless communication networks. This is due to its capacity to effectively modify wireless channels in desired destinations with low-cost design and energy consumption. A significant amount of research...

Because light has different propagation behaviors at different wavelengths, all-light communication that can transmit and receive data regardless of the environment can completely bridge space, air, and underwater applications via different types of light sources for seamless connectivity. Here, we establish a complete-mapping mobile optical commun...