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Article
Computer Science, Information Systems
Zhandos Zhakipov et al.
Summary: This letter proposes a novel accurate approximation for the channel distribution of cascaded RIS-aided wireless networks over Nakagami-m fading channels. The derived probability density function and outage probability expressions are applicable to any number of cascaded RISs and reflecting elements per individual RIS. The approximation accuracy is validated using the Kolmogorov-Smirnov goodness-of-fit test, and analytical results are verified through Monte Carlo simulations.
IEEE WIRELESS COMMUNICATIONS LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Emil Bjornson et al.
Summary: Antenna array technology enables the directional transmission and reception of wireless signals, with signal processing algorithms playing a crucial role. It is widely used in communication and localization applications.
IEEE SIGNAL PROCESSING MAGAZINE
(2022)
Article
Computer Science, Information Systems
Sultangali Arzykulov et al.
Summary: Reconfigurable intelligent surfaces (RISs) are a revolutionary technique in wireless networks. This article analyzes the performance of an RIS-aided multihop FD relaying system and proposes a solution to improve system performance by combining active FD relaying with passive RIS platforms.
IEEE SYSTEMS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Asmaa Abdallah et al.
Summary: This paper proposes two deep learning compressive sensing algorithms for channel estimation in frequency-selective wideband mmWave systems. The algorithms learn critical apriori information from training data to provide accurate channel estimates with low training overhead. Simulation results show that the proposed DL-based schemes outperform conventional OMP techniques in terms of NMSE, computational complexity, and spectral efficiency.
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
(2022)
Article
Computer Science, Information Systems
Milad Tatar Mamaghani et al.
Summary: In this article, a UAV-mounted IRS communication system over THz bands is proposed for confidential data dissemination in IoT networks. By utilizing IRS for reliable data transmissions and extra UAV for jamming, the communication covertness and energy efficiency can be improved.
IEEE INTERNET OF THINGS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Chen Hu et al.
Summary: The paper proposes a two-timescale channel estimation framework leveraging the high-dimensional quasi-static BS-RIS channel and low-dimensional mobile RIS-UE channel. A dual-link pilot transmission scheme and a coordinate descent-based algorithm are designed. The average pilot overhead can be reduced in the long term.
IEEE TRANSACTIONS ON COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Qingqing Wu et al.
Summary: Intelligent reflecting surface (IRS) is a technology that can alter wireless signal propagation in wireless networks by dynamically changing wireless channels to enhance communication performance. The future hybrid wireless network aided by IRS, comprising both active and passive components, is expected to achieve sustainable capacity growth cost-effectively.
IEEE TRANSACTIONS ON COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Marzieh Najafi et al.
Summary: To optimize large intelligent reflecting surfaces (IRSs), a physics-based model and a scalable optimization framework are proposed in this article. By partitioning IRS unit cells into subsets and optimizing each subset in two stages, offline design and online optimization, efficiency can be improved for optimizing large IRSs.
IEEE TRANSACTIONS ON COMMUNICATIONS
(2021)
Article
Computer Science, Information Systems
Gui Zhou et al.
Summary: This study focuses on optimizing transmission design for a secure communication system with reconfigurable intelligent surfaces in the presence of transceiver hardware impairments. The proposed scheme maximizes secrecy rate while ensuring power and unit-modulus constraints, using alternate optimization with SCA and SDP methods. Results show that the new design is more robust than conventional non-robust schemes.
IEEE WIRELESS COMMUNICATIONS LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Qingqing Wu et al.
IEEE COMMUNICATIONS MAGAZINE
(2020)
Article
Computer Science, Information Systems
Xinrong Guan et al.
IEEE WIRELESS COMMUNICATIONS LETTERS
(2020)
Article
Engineering, Electrical & Electronic
Xianghao Yu et al.
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
(2020)
Article
Engineering, Electrical & Electronic
Biqian Feng et al.
IEEE TRANSACTIONS ON SIGNAL PROCESSING
(2020)
Article
Computer Science, Information Systems
Miao Cui et al.
IEEE WIRELESS COMMUNICATIONS LETTERS
(2019)
Article
Engineering, Electrical & Electronic
Emil Bjornson et al.
FOUNDATIONS AND TRENDS IN SIGNAL PROCESSING
(2017)
