Article
Telecommunications
Anand Jee, Komal Janghel, Shankar Prakriya
Summary: In this paper, the power domain cooperative non-orthogonal multiple access (NOMA) is studied in underlay cognitive radio networks, which can achieve higher throughput compared to conventional orthogonal multiple access (OMA). The proposed intelligent user-selection and mode-switching scheme ensures high throughput for far-users while maintaining desired performance for near-users. The study shows that by broadcasting the interference temperature limit (ITL) in every coherence interval, significant gains in throughput can be obtained.
IEEE TRANSACTIONS ON COGNITIVE COMMUNICATIONS AND NETWORKING
(2022)
Article
Computer Science, Information Systems
Oluwatosin Ahmed Amodu, Mohamed Othman, Nor Kamariah Noordin, Idawaty Ahmad
Summary: This article develops a framework for outage probability of energy harvesting underlay cognitive radio networks, where primary users have constant energy sources and secondary users harvest energy from primary devices. The study reveals the impacts of the number of primary hops on relay selection region and harvested energy, and provides an expression for total outage probability considering N primary hops. Additionally, the effects of other relevant parameters on outage probability are detailed.
IEEE SYSTEMS JOURNAL
(2021)
Article
Chemistry, Analytical
Phu Tran Tin, Van-Duc Phan, Tan N. Nguyen, Lam-Thanh Tu, Bui Vu Minh, Miroslav Voznak, Peppino Fazio
Summary: This paper investigates the performance of cooperative cognitive radio networks based on simultaneous wireless information and power transfer, deriving the outage probability in closed-form expressions. Increasing transmit power and/or the number of relays is beneficial for reducing the outage probability. Monte Carlo simulations are used to validate the mathematical analysis and show the behavior of outage probability with respect to key parameters.
Article
Engineering, Electrical & Electronic
Jiliang Zhang, Xiaojun Pan, Yongzhi Zhuang, Gaofeng Pan, Hongjiang Lei
Summary: This study evaluates the physical-layer security of an RF-FSO network with multiple relays and a multi-aperture secondary destination. The study adopts a transmit antenna selection scheme and relay selection criterion, obtaining analytical and asymptotic expressions for the lower bound of secrecy outage probability.
PHYSICAL COMMUNICATION
(2021)
Article
Computer Science, Information Systems
Xinyu Zheng, Jiliang Zhang, Gaofeng Pan
Summary: This article investigates the secrecy performance of a UAV-aided nonorthogonal multiple access (NOMA) network in the context of an underlay cognitive radio. The study considers the impact of multiantenna secondary source, multiantenna secondary destinations, and eavesdropper. The secrecy performance is evaluated in terms of secrecy outage probability, and the accuracy of the theoretical results is verified through Monte-Carlo simulations.
IEEE INTERNET OF THINGS JOURNAL
(2022)
Article
Computer Science, Information Systems
Ngo Hoang Tu, Trong-Dai Hoang, Kyungchun Lee
Summary: In this work, we investigate short-packet communications for multiple-input multiple-output underlay cognitive multihop relay networks. We derive closed-form expressions of the end-to-end block error rate for performance evaluation. Based on the analytical results, we adapt machine learning-aided estimators to predict the system performance. Moreover, we obtain closed-form expressions for the optimal power-allocation and relay-location strategies to minimize the asymptotic end-to-end block error rate.
Article
Computer Science, Artificial Intelligence
Zhe Wang, Chun Yang, Binyu Xie
Summary: Investigated a cache-aided relaying system in the presence of UAVs, utilizing a ground-based relay with cache space to facilitate wireless communication between UAVs and a central data source. Improved system performance by power resource allocation and analyzed the impact of various factors on system performance through mathematical modeling and simulations.
COMPUTATIONAL INTELLIGENCE
(2023)
Article
Computer Science, Information Systems
P. Shachi, T. Sanjana, K. R. Sudhindra, M. N. Suma
Summary: This paper analyzes the performance of a multicarrier underlay cognitive radio system with successive interference cancellation (SIC) method for detection. The system guarantees quality of service (QoS) to the primary user (PU) while maximizing the throughput of the secondary user (SU) through power allocation strategy. Analytical expressions for outage probability at SU and average symbol error rates (SER) per subcarrier of PU and SU are derived and validated using Monte-Carlo simulations. Comparison of detection schemes shows that SIC with channel estimation based on minimum-mean-squared-error (MMSE) performs better. The proposed system ensures sufficient throughput to SU without the need for opportunistic sensing.
Article
Engineering, Multidisciplinary
Anshu Thakur, Ashok Kumar, Nitin Gupta, Puspita Chatterjee
Summary: This study investigates the secrecy performance in an underlay cognitive radio network with imperfect channel state information and energy harvesting potential. The use of maximal ratio combining technique and consideration of path losses and imperfect CSI are taken into account. The objective is to derive the secrecy outage probability for Rayleigh fading channel and analyze the best antenna selection at the secondary transmitter.
IEEE TRANSACTIONS ON NETWORK SCIENCE AND ENGINEERING
(2022)
Article
Computer Science, Information Systems
Manlin Fang, Dong Li, Han Zhang, Lisheng Fan, Imene Trigui
Summary: In the fifth generation (5G) cellular system, the incremental relaying (IR) scheme improves the performance of short-packet communication, reducing transmission delay and enhancing reception reliability and transmission efficiency.
COMPUTER COMMUNICATIONS
(2021)
Proceedings Paper
Computer Science, Information Systems
Lam Thanh Tu, Phan Lam Tung, Trinh Van Chien, Tran Trung Duy, Nguyen Tien Hoa
Summary: This study investigates the performance of primary and secondary networks in underlay cognitive radio networks using incremental amplify and forward relaying under imperfect channel state information. It is found that the impact of imperfect CSI on the interference probability of primary networks is significant. To address this issue, reducing the transmit power at the secondary transmitters is proposed as a solution, although it may increase the outage probability at the secondary networks. A power control coefficient is suggested to balance the performance between the two networks. Monte-Carlo simulations are conducted to validate the accuracy of the proposed mathematical frameworks.
IEEE ICCE 2020: 2020 IEEE EIGHTH INTERNATIONAL CONFERENCE ON COMMUNICATIONS AND ELECTRONICS (ICCE)
(2021)
Article
Chemistry, Analytical
Nadica Kozic, Vesna Blagojevic, Predrag Ivanis
Summary: The paper analyzes a cooperative cognitive wireless system with limited computational resources, suitable for small-sized devices. It explores the outage probability of the cognitive network and validates the results for different relaying protocols.
Article
Automation & Control Systems
Jiliang Zhang, Mengdie Han
Summary: This paper investigates the physical-layer security for an IoT relaying network employing NOMA in the context of non-linear energy harvesting. Analytical and asymptotic expressions for secrecy outage probability and the probability of strictly positive secrecy capacity are derived, verifying the assumptions related to power-constrained sources and IoT devices.
JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
(2021)
Article
Computer Science, Information Systems
Zih-Sin Wang, Liang-Hung Lin, Jyh-Horng Wen, Yen-Ju Lin, Chien-Erh Weng
Summary: This paper studies the performance of conventional cooperative communication and cooperative communication with SWIPT under an AF relaying network, revealing that the cooperative communication with SWIPT has better outage probability only when the distance between relay node and source node is less than one. Additionally, with the diversity of direct path and relay path, the outage probability of cooperative communication with EH under an AF relaying network has been significantly reduced.
Article
Engineering, Electrical & Electronic
V Aswathi, A. Babu
Summary: In this paper, the outage and throughput performance of SUs in a CR-NOMA system based on the PRS scheme were investigated. Comparisons were made with various random relay selection and fixed relay strategies, showing that the proposed OPA factors can significantly improve system performance.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Zhe Song, Jianping An, Gaofeng Pan, Shuai Wang, Haoxing Zhang, Yunfei Chen, Mohamed-Slim Alouini
Summary: In this paper, a cooperative satellite-aerial-terrestrial network (SATN) is proposed to assist aerial terminals in forwarding their information to a remote terrestrial destination. Statistical characteristics and outage probabilities are derived for the uplink and downlink between the aerial source, satellite/aerial relay, and the destination. Numerical results are presented to validate the analysis models and compare the outage performance of the considered cooperative SATN with different relay links.
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Mohamed-Amine Lahmeri, Mustafa A. Kishk, Mohamed-Slim Alouini
Summary: The use of unmanned aerial vehicles (UAVs) is advocated for 6G networks to improve broadband services and expand cellular coverage. However, their mobility and line-of-sight (LOS) links are hindered by factors such as weather conditions, limited computing power, and limited energy.
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
(2023)
Article
Telecommunications
Zhen Gao, Hanlin Xiu, Yikun Mei, Anwen Liao, Malong Ke, Chun Hu, Mohamed-Slim Alouini
Summary: XL-MIMO technology is a promising solution for providing Tbps data transmission and stable access service in beyond fifth/sixth generation mobile communications. However, the large antenna array aperture causes the channel near-field effect, leading to degraded data rate and challenges in practical communication systems. Combining XL-MIMO with multi-panel array structure, we propose multi-panel XL-MIMO for massive IoT access, which exhibits superior performance with joint active user detection and channel estimation using compressed sensing and AMP-EM-MMV algorithm.
CHINA COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Hong-Bae Jeon, Soo-Min Kim, Hyung-Joo Moon, Do-Hoon Kwon, Joon-Woo Lee, Jong-Moon Chung, Sang-Kook Han, Chan-Byoung Chae, Mohamed-Slim Alouini
Summary: Researchers have studied innovations in future 6G wireless communications, focusing on the use of free-space optical communication technology for ultrafast data links. Through experiments, they have demonstrated successful transmission of ultra-high-definition videos under severe turbulence and high wind speeds.
IEEE COMMUNICATIONS MAGAZINE
(2023)
Article
Engineering, Electrical & Electronic
Huaicong Kong, Min Lin, Lve Han, Wei-Ping Zhu, Zhiguo Ding, Mohamed-Slim Alouini
Summary: This paper investigates a semi-grant-free (SGF) based transmission strategy for flexible connectivity in an integrated satellite-aerial-terrestrial network (ISATN). Two SGF-based uplink transmission schemes are proposed for both perfect and imperfect channel state information (CSI) cases. Closed-form throughput expressions are derived to evaluate the performance of the considered ISATN. Computer simulations validate the theoretical analysis and demonstrate the superiority of the proposed schemes.
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
(2023)
Article
Engineering, Aerospace
Sobia Jangsher, Mohammad Al-Jarrah, Arafat Al-Dweik, Emad Alsusa, Mohamed-Slim Alouini
Summary: This article focuses on minimizing the communications bit error rate (BER) of unmanned aerial vehicles with the help of intelligent reflecting surfaces. It proposes an efficient algorithm to select the elements that can improve BER. The results show that using all available reflectors can deteriorate BER, and partial element selection is necessary for significant BER reduction.
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
(2023)
Article
Engineering, Electrical & Electronic
Yujie Qin, Mustafa A. A. Kishk, Mohamed-Slim Alouini
Summary: This paper presents a new method for computing the meta distribution of SINR in the downlink transmission of a wireless network with Rayleigh fading. The method employs a mixture of exact and mean-field analysis of interference to simplify the analysis. The proposed approximation omits the need to compute the first or second moment of SINR, but requires the computation of joint distance distributions.
IEEE TRANSACTIONS ON COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Jae Eun Han, Sung Sik Nam, Changseok Yoon, Duck Dong Hwang, Mohamed-Slim Alouini
Summary: With the development of wireless communication technologies, the use of free-space optical (FSO) communication has expanded to maritime environments. This study analyzes the ergodic capacity of FSO communication between mobile platforms in foggy maritime conditions, taking into account pathloss and pointing error. Analytical results, derived from moment expressions, are cross-verified with simulation results. The combined effects of fog, pathloss, and pointing error degrade FSO performance, emphasizing the importance of choosing the appropriate detection technique according to the communication environment.
APPLIED SCIENCES-BASEL
(2023)
Article
Computer Science, Information Systems
Yujie Qin, Mustafa A. Kishk, Mohamed-Slim Alouini
Summary: This article analyzes the feasibility of using drones for data collection and delivery and proposes an algorithm to optimize their trajectory. The results reveal that multifunctional UAVs have great potential to enhance the efficiency of communication and transportation networks.
IEEE INTERNET OF THINGS JOURNAL
(2023)
Article
Telecommunications
Souad Labghough, Fouad Ayoub, Faissal El Bouanani, Mostafa Belkasmi, Khalid A. Qaraqe
Summary: This paper investigates the performance analysis of simultaneous wireless information and power transfer (SWIPT) using time switching (TS) protocol-based amplify-and-forward (AF) dual-hop mixed radio-frequency/free-space optic (RF/FSO) coded and uncoded communication system. The study focuses on the use of One-Step Majority-Logic Decodable (OSMLD) codes at the source and a majority logic decoding algorithm (MLGD) at the destination, as well as maximal-ratio combining and SWIPT/TS techniques at the relay. The analysis considers Nakagami-m model for the RF link and Maalaga-M atmospheric turbulence with pointing errors for the second-hop. Closed-form and asymptotic formulations for the average bit error probability (ABEP) are obtained, along with average channel capacity analysis, and the results are validated through computer-based Monte Carlo simulations.
IEEE TRANSACTIONS ON GREEN COMMUNICATIONS AND NETWORKING
(2023)
Article
Engineering, Electrical & Electronic
Athira Subhash, Abla Kammoun, Ahmed Elzanaty, Sheetal Kalyani, Yazan H. Al-Badarneh, Mohamed-Slim Alouini
Summary: Reconfigurable intelligent surfaces (RIS) are crucial in next-generation communication systems, but designing the RIS phases based on instantaneous channel state information (CSI) is challenging due to short coherent time of the channel. Therefore, we propose a novel algorithm that optimizes beamforming at the base station (BS), power allocation of users, and phase shifts at RIS elements based on channel statistics in massive multiple input multiple output systems to maximize the minimum signal-to-interference and noise ratio (SINR) for fair operation among users. By leveraging the asymptotic deterministic equivalent of the minimum SINR that depends only on channel statistics, the proposed algorithm significantly reduces computational complexity and controlling data between BS and RIS for phase updates. This setup is also beneficial for EMF-aware systems with constraints on user exposure to EMF. Numerical results demonstrate over 100% gain in minimum SINR compared to a system with random RIS phase shifts when considering 40 RIS elements, 20 BS antennas, and 10 users.
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Ozgur Alaca, Saud Althunibat, Serhan Yarkan, Scott L. Miller, Khalid A. Qaraqe
Summary: This article investigates the individual and joint effects of transmitter and receiver in-phase and quadrature imbalances on the bit-error-rate performance of the uplink IM-OFDMA scheme. A preamble-based estimation and compensation method is proposed to mitigate the detrimental effect of IQI. The results reveal that IQI can cause an error floor in the BER performance of IM-OFDMA schemes, but the proposed method improves the BER performance compared to the case of no IQI.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Abdullateef Almohamad, Mohamad T. Dabiri, Mazen O. Hasna, Tamer Khattab, Khalid Qaraqe
Summary: Networked flying platforms (NFPs) are being favored as a cost-efficient and flexible solution for extending network coverage and/or capacity in temporary scenarios. This paper focuses on studying the performance of a long millimeter wave (mmWave) link through multiple NFPs, considering the fluctuation of NFPs. The findings provide insights for designing reliable multihop links and reducing interference.
IEEE OPEN JOURNAL OF VEHICULAR TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Maurilio Matracia, Mustafa A. Kishk, Mohamed-Slim Alouini
Summary: This study proposes an analytical framework using stochastic geometry tools to analyze the coverage probability of a wireless network assisted by aerial reconfigurable intelligent surface (ARIS) technology. Various factors, including the altitude and line-of-sight condition of terrestrial base stations, as well as the fading conditions of wireless links, were considered. The numerical results demonstrate different coverage situations in different scenarios.
IEEE OPEN JOURNAL OF VEHICULAR TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Yongqiang Zhang, Mustafa A. Kishk, Mohamed-Slim Alouini
Summary: The article introduces the cost-effective solution of high altitude platform (HAP) networks for network access in rural or remote areas, and discusses the importance of freshness-aware real-time intelligent communication services for decision-making applications. The potential of resource allocation and free-space optical (FSO) backhaul framework for enhancing multi-layer HAP network performance is also explored, along with the development of dynamic resource allocation schemes. Simulation results demonstrate the superiority of the dynamic deep reinforcement learning (DRL)-based method over the static allocation scheme.
IEEE OPEN JOURNAL OF THE COMMUNICATIONS SOCIETY
(2023)
