2.2k citations · 6.7k across the 213 of their papers we have counts for
32 papers · 1 filter
Digital RIS (DRIS): The Future of Digital Beam Management in RIS-Assisted OWC Systems
Alain R. Ndjiongue, Telex M. N. Ngatched, Octavia A. Dobre +1
Reconfigurable intelligent surfaces (RIS) have been recently introduced to optical wireless communication (OWC) networks to resolve skip areas and improve the signal-to-noise ratio…
Reconfigurable Intelligent Surface Optimization for Uplink Sparse Code Multiple Access
Ibrahim Al-Nahhal, Octavia A. Dobre, Ertugrul Basar +2
The reconfigurable intelligent surface (RIS)-assisted sparse code multiple access (RIS-SCMA) is an attractive scheme for future wireless networks. In this letter, for the first tim…
Federated Learning for Smart Healthcare: A Survey
Dinh C. Nguyen, Quoc-Viet Pham, Pubudu N. Pathirana +5
Recent advances in communication technologies and Internet-of-Medical-Things have transformed smart healthcare enabled by artificial intelligence (AI). Traditionally, AI techniques…
Hybrid-Layers Neural Network Architectures for Modeling the Self-Interference in Full-Duplex Systems
Mohamed Elsayed, Ahmad A. Aziz El-Banna, Octavia A. Dobre +2
Full-duplex (FD) systems have been introduced to provide high data rates for beyond fifth-generation wireless networks through simultaneous transmission of information over the sam…
Perturbation Theory-Aided Learned Digital Back-Propagation Scheme for Optical Fiber Nonlinearity Compensation
Xiang Lin, Shenghang Luo, Sunish Kumar Orappanpara Soman +4
Derived from the regular perturbation treatment of the nonlinear Schrodinger equation, a machine learning-based scheme to mitigate the intra-channel optical fiber nonlinearity is p…
Deep Reinforcement Learning for Optimizing RIS-Assisted HD-FD Wireless Systems
Alice Faisal, Ibrahim Al-Nahhal, Octavia A. Dobre +1
This letter investigates the reconfigurable intelligent surface (RIS)-assisted multiple-input single-output (MISO) wireless system, where both half-duplex (HD) and full-duplex (FD)…
Antenna Array Enabled Space/Air/Ground Communications and Networking for 6G
Zhenyu Xiao, Zhu Han, Arumugam Nallanathan +5
Antenna arrays have a long history of more than 100 years and have evolved closely with the development of electronic and information technologies, playing an indispensable role in…
Integration of Backscatter Communication with Multi-cell NOMA: A Spectral Efficiency Optimization under Imperfect SIC
Wali Ullah Khan, Eva Lagunas, Asad Mahmood +4
Future wireless networks are expected to connect large-scale low-powered communication devices using the available spectrum resources. Backscatter communications (BC) is an emergin…
Deep Learning-based Time-varying Channel Estimation for RIS Assisted Communication
Meng Xu, Shun Zhang, Jianpeng Ma +1
Reconfigurable intelligent surface (RIS) is considered as a revolutionary technology for future wireless communication networks. In this letter, we consider the acquisition of the…
6G Internet of Things: A Comprehensive Survey
Dinh C. Nguyen, Ming Ding, Pubudu N. Pathirana +5
The sixth generation (6G) wireless communication networks are envisioned to revolutionize customer services and applications via the Internet of Things (IoT) towards a future of fu…
Deep Learning Based Antenna-time Domain Channel Extrapolation for Hybrid mmWave Massive MIMO
Shunbo Zhang, Shun Zhang, Jianpeng Ma +2
In a time-varying massive multiple-input multipleoutput (MIMO) system, the acquisition of the downlink channel state information at the base station (BS) is a very challenging task…
Deep Reinforcement Learning for Intelligent Reflecting Surface-assisted D2D Communications
Khoi Khac Nguyen, Antonino Masaracchia, Cheng Yin +3
In this paper, we propose a deep reinforcement learning (DRL) approach for solving the optimisation problem of the network's sum-rate in device-to-device (D2D) communications suppo…
Effective Capacity Analysis of HARQ-enabled D2D Communication in Multi-Tier Cellular Networks
Syed Waqas Haider Shah, Muhammad Mahboob-ur-Rahman, Adnan Noor Mian +2
This work does the statistical quality-of-service (QoS) analysis of a block-fading device-to-device (D2D) link in a multi-tier cellular network that consists of a macro-BS (BSMC) a…
PDL Impact on Linearly Coded Digital Phase Conjugation Techniques in CO-OFDM Systems
O. S. Sunish Kumar, A. Amari, O. A. Dobre +1
We investigate the impact of polarization-dependent loss (PDL) on the linearly coded digital phase conjugation (DPC) techniques in coherent optical orthogonal frequency division mu…
Second-Order Perturbation Theory-Based Digital Predistortion for Fiber Nonlinearity Compensation
O. S. Sunish Kumar, A. Amari, O. A. Dobre +1
The first-order (FO) perturbation theory-based nonlinearity compensation (PB-NLC) technique has been widely investigated to combat the detrimental effects of the intra-channel Kerr…
A Joint Technique for Nonlinearity Compensation in CO-OFDM Superchannel Systems
O. S. Sunish Kumar, A. Amari, O. A. Dobre +2
We propose a technique combining the singlechannel digital-back-propagation (SC-DBP) with phaseconjugated-twin-wave (PCTW) to compensate nonlinearities in CO-OFDM superchannel syst…
A Spectrally Efficient Linear Polarization Coding Scheme for Fiber Nonlinearity Compensation in CO-OFDM Systems
O. S. Sunish Kumar, O. A. Dobre, R. Venkatesan +4
In this paper, we propose a linear polarization coding scheme (LPC) combined with the phase conjugated twin signals (PCTS) technique, referred to as LPC-PCTS, for fiber nonlinearit…
Cascaded Channel Estimation for RIS Assisted mmWave MIMO Transmissions
Yushan Liu, Shun Zhang, Feifei Gao +2
Channel estimation is challenging for the reconfigurable intelligence surface (RIS) assisted millimeter wave (mmWave) communications. Since the number of coefficients of the cascad…
Deep Learning Based RIS Channel Extrapolation with Element-grouping
Shunbo Zhang, Shun Zhang, Feifei Gao +2
Reconfigurable intelligent surface (RIS) is considered as a revolutionary technology for future wireless communication networks. In this letter, we consider the acquisition of the…
Toward Blockchain for Edge-of-Things: A New Paradigm, Opportunities, and Future Directions
Prabadevi B, N Deepa, Quoc-Viet Pham +5
Blockchain is gaining momentum as a promising technology for many application domains, one of them being the Edge-of- Things (EoT) that is enabled by the integration of edge comput…
LiFi Through Reconfigurable Intelligent Surfaces: A New Frontier for 6G?
Hanaa Abumarshoud, Lina Mohjazi, Octavia A. Dobre +3
Light fidelity (LiFi), which is based on visible light communications (VLC), is celebrated as a cutting-edge technological paradigm that is envisioned to be an indispensable part o…
Coverage Characterization of STAR-RIS Networks: NOMA and OMA
Chenyu Wu, Yuanwei Liu, Xidong Mu +2
The novel concept of simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) is investigated, where incident signals can be transmitted and reflect…
Design of a Power Amplifying-RIS for Free-Space Optical Communication Systems
Alain R. Ndjiongue, Telex M. N. Ngatched, Octavia A. Dobre +1
The steering dynamics of re-configurable intelligent surfaces (RIS) have hoisted them to the front row of technologies that can be exploited to solve skip-zones in wireless communi…
Incremental Relaying for Power Line Communication: Performance Analysis and Power Allocation
Ankit Dubey, Chinmoy Kundu, Telex M. N. Ngatched +2
In this paper, incremental decode-and-forward (IDF) and incremental selective decode-and-forward (ISDF) relaying are proposed to improve the spectral efficiency of power line commu…