A5091122305- Advanced Wireless Communication Techniques
- Wireless Communication Networks Research
- Advanced MIMO Systems Optimization
- Advanced Wireless Communication Technologies
- Cooperative Communication and Network Coding
- Error Correcting Code Techniques
- PAPR reduction in OFDM
- Advanced Wireless Network Optimization
- Advanced Data Compression Techniques
- Wireless Communication Security Techniques
- Millimeter-Wave Propagation and Modeling
- Full-Duplex Wireless Communications
- Optical Wireless Communication Technologies
- Satellite Communication Systems
- Energy Harvesting in Wireless Networks
- Coding theory and cryptography
- Antenna Design and Analysis
- Indoor and Outdoor Localization Technologies
- Quantum Computing Algorithms and Architecture
- UAV Applications and Optimization
- Advanced Adaptive Filtering Techniques
- Optical Network Technologies
- Advanced Photonic Communication Systems
- Power Line Communications and Noise
- Quantum Information and Cryptography
University of Southampton
2016-2025
The University of Tokyo
2024
Indian Institute of Technology Kanpur
2021-2024
Queen's University Belfast
2023-2024
Hanoi University of Science and Technology
2024
Indian Institute of Technology Jodhpur
2024
Tsinghua University
2015-2023
CentraleSupélec
2023
Université Paris-Saclay
2023
Centre National de la Recherche Scientifique
2023
A key challenge of future mobile communication research is to strike an attractive compromise between wireless network's area spectral efficiency and energy efficiency. This necessitates a clean-slate approach system design, embracing the rich body existing knowledge, especially on multiple-input-multiple-ouput (MIMO) technologies. motivates proposal emerging communications concept conceived for single-radio-frequency (RF) large-scale MIMO communications, which termed as SM. The SM has...
Abstract The fifth generation (5G) wireless communication networks are being deployed worldwide from 2020 and more capabilities in the process of standardized, such as mass connectivity, ultra-reliability, guaranteed low latency. However, 5G will not meet all requirements future 2030 beyond, sixth (6G) expected to provide global coverage, enhanced spectral/energy/cost efficiency, better intelligence level security, etc. To these requirements, 6G rely on new enabling technologies, i.e., air...
Due to the broadcast nature of radio propagation, wireless air interface is open and accessible both authorized illegitimate users. This completely differs from a wired network, where communicating devices are physically connected through cables node without direct association unable access network for illicit activities. The communications environment makes transmissions more vulnerable than malicious attacks, including passive eavesdropping data interception active jamming disrupting...
Sharing of the frequency bands between radar and communication systems has attracted substantial attention, as it can avoid under-utilization otherwise permanently allocated spectral resources, thus improving efficiency. Further, there is increasing demand for that share hardware platform well band, this not only decongests spectrum, but also benefits both sensing signaling operations via full cooperation functionalities. Nevertheless, success spectrum sharing critically depends on...
Driven by the rapid escalation of wireless capacity requirements imposed advanced multimedia applications (e.g., ultrahigh-definition video, virtual reality, etc.), as well dramatically increasing demand for user access required Internet Things (IoT), fifth-generation (5G) networks face challenges in terms supporting large-scale heterogeneous data traffic. Nonorthogonal multiple (NOMA), which has been recently proposed third-generation partnership projects long-term evolution (3GPP-LTE-A),...
In the fifth generation (5G) of wireless communication systems, hitherto unprecedented requirements are expected to be satisfied. As one promising techniques addressing these challenges, non-orthogonal multiple access (NOMA) has been actively investigated in recent years. contrast family conventional orthogonal (OMA) schemes, key distinguishing feature NOMA is support a higher number users than resource slots with aid allocation. This may realized by sophisticated inter-user interference...
Next-generation wireless networks are expected to support extremely high data rates and radically new applications, which require a radio technology paradigm. The challenge is that of assisting the in intelligent adaptive learning decision making, so diverse requirements next-generation can be satisfied. Machine one most promising artificial intelligence tools, conceived smart terminals. Future 5G mobile terminals autonomously access meritorious spectral bands with aid sophisticated...
Intelligent reflecting surfaces (IRSs) constitute a disruptive wireless communication technique capable of creating controllable propagation environment. In this paper, we propose to invoke an IRS at the cell boundary multiple cells assist downlink transmission cell-edge users, whilst mitigating inter-cell interference, which is crucial issue in multicell systems. We aim for maximizing weighted sum rate (WSR) all users through jointly optimizing active precoding matrices base stations (BSs)...
Recent analysis by manufacturers and network operators has shown that current wireless networks are not very energy efficient, particularly the base stations which terminals access services from network. In response to this observation Mobile Virtual Centre of Excellence (VCE) Green Radio project was established in 2009 establish how significant savings may be obtained future systems. This article discusses technical background models consumption station devices. It also describes some most...
An intelligent reflecting surface (IRS) is invoked for enhancing the energy harvesting performance of a simultaneous wireless information and power transfer (SWIPT) aided system. Specifically, an IRS-assisted SWIPT system considered, where multi-antenna base station (BS) communicates with several assisted receivers (IRs), while guaranteeing requirement (ERs). To maximize weighted sum rate (WSR) IRs, transmit precoding (TPC) matrices BS passive phase shift matrix IRS should be jointly...
The emerging massive/large-scale MIMO (LS-MIMO) systems relying on very large antenna arrays have become a hot topic of wireless communications. Compared to the LTE based 4G mobile communication system that allows for up 8 elements at base station (BS), LS-MIMO entails an unprecedented number antennas, say 100 or more, BS. huge leap in BS antennas opens door new research field theory, propagation and electronics, where random matrix theory begins play dominant role. In this paper, we provide...
One of the key enablers future wireless communications is constituted by massive multiple-input multiple-output (MIMO) systems, which can improve spectral efficiency orders magnitude. In existing MIMO however, conventional phased arrays are used for beamforming. This method results in excessive power consumption and high hardware costs. Recently, reconfigurable intelligent surface (RIS) has been considered as one revolutionary technologies to enable energy-efficient smart communications, a...
The wireless research community aspires to conceive full duplex operation by supporting concurrent transmission and reception in a single time/frequency channel for the sake of improving attainable spectral efficiency factor two as compared family conventional half systems. main challenge encountered implementing FD devices is that finding techniques mitigating performance degradation imposed self-interference. In this article, we investigate potential techniques, including passive...
Beamforming techniques are proposed for a joint multi-input-multi-output (MIMO) radar-communication (RadCom) system, where single device acts as radar and communication base station (BS) by simultaneously communicating with downlink users detecting targets. Two operational options considered, we first split the antennas into two groups, one other communication. Under this deployment, signal is designed to fall null-space of channel. The beamformer optimized such that beampattern obtained...
Reconfigurable intelligent surfaces (RISs) or reflecting (IRSs) are regarded as one of the most promising and revolutionizing techniques for enhancing spectrum and/ energy efficiency wireless systems. These devices capable reconfiguring propagation environment by carefully tuning phase shifts a large number low-cost passive elements. In this article, we aim to answer four fundmental questions: 1) Why do need RISs? 2) What is an RIS? 3) RIS's applications? 4) relevant challenges future...
Fifth generation (5G) mobile communication systems have entered the stage of commercial deployment, providing users with new services, improved user experiences as well a host novel opportunities to various industries. However, 5G still faces many challenges. To address these challenges, international industrial, academic, and standards organizations commenced research on sixth (6G) wireless systems. A series white papers survey been published, which aim define 6G in terms requirements,...
This paper investigates the physical layer security of non-orthogonal multiple access (NOMA) in large-scale networks with invoking stochastic geometry. Both single-antenna and multiple-antenna aided transmission scenarios are considered, where base station (BS) communicates randomly distributed NOMA users. In scenario, we adopt a protected zone around BS to establish an eavesdropper-exclusion area aid careful channel ordering artificial noise is generated at for further improving...
A new class of low-complexity, yet energy-efficient Multiple-Input Multiple-Output (MIMO) transmission techniques, namely, the family Spatial Modulation (SM) aided MIMOs (SM-MIMO), has emerged. These systems are capable exploiting spatial dimensions (i.e., antenna indices) as an additional dimension invoked for transmitting information, apart from traditional Amplitude and Phase (APM). SM is efficiently operating in diverse MIMO configurations context future communication systems. It...
The millimeter wave (mmWave) frequency band spanning from 30 to 300 GHz constitutes a substantial portion of the unused spectrum, which is an important resource for future wireless communication systems in order fulfill escalating capacity demand. Given improvements integrated components and enhanced power efficiency at high frequencies, can operate mmWave band. In this paper, we present survey propagation characteristics, channel modeling, design guidelines, such as system antenna...
Emerging technologies, such as the Internet of Things, smart applications, grids, and machine-to-machine networks stimulate deployment autonomous, self-configuring, large-scale wireless sensor (WSNs). Efficient energy utilization is crucially important in order to maintain a fully operational network for longest period time possible. Therefore, lifetime (NL) maximization techniques have attracted lot research attention owing their importance terms extending flawless operation...
The family of conventional half-duplex (HD) wireless systems relied on transmitting and receiving in different time slots or frequency subbands. Hence, the research community aspires to conceive full-duplex (FD) operation for supporting concurrent transmission reception a single time/frequency channel, which would improve attainable spectral efficiency by factor two. main challenge encountered implementing an FD device is large power difference between self-interference (SI) imposed device's...
A historical perspective of orthogonal frequency-division multiplexing (OFDM) is given with reference to its literature. Its advantages and disadvantages are reviewed, performance characterized over highly dispersive channels. The effects both time- frequency-domain synchronization errors quantified, a range solutions proposed in the recent literature reviewed. One main objectives this review highlight thinking behind adaptive bit allocation turbo coding context OFDM. This paper concludes...