Article
Geochemistry & Geophysics
Weiwei Jiang, Yafeng Zhan, Shen Xi, Defeng David Huang, Jianhua Lu
Summary: In this article, rain attenuation in satellite-to-Earth microwave communication signals is used to reconstruct rainfall, extending the problem from 2D to 3D scenarios. A compressive sensing approach is proposed and evaluated using synthetic rain events near the Great Barrier Reef in Australia. The results show that the compressive sensing approach outperforms traditional methods.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Telecommunications
Fei Zhao, Wanming Hao, Hui Guo, Gangcan Sun, Yi Wang, Hongliang Zhang
Summary: In this letter, we investigate secure energy efficiency (SEE) for millimeter-wave non-orthogonal multiple access (mmWave-NOMA) cognitive satellite terrestrial network (CSTN). We propose a power allocation optimization problem to maximize the SEE, considering the spectrum sharing issues and imperfect channel state information. We also design a hybrid analog/digital precoding and divide the legitimate receivers (LRs) into clusters served by NOMA.
IEEE COMMUNICATIONS LETTERS
(2023)
Article
Environmental Sciences
Emilio Matricciani, Carlo Riva, Lorenzo Luini
Summary: The passage mainly discusses the connection between transmitters/receivers in the GeoSurf satellite constellations and satellites with zenith paths, investigating tropospheric attenuation at different latitudes. Significant differences were found between the Northern and Southern Hemispheres in terms of clear-sky and rain attenuation under different annual probabilities.
Article
Computer Science, Information Systems
Tianjiao Chen, Jiang Liu, Qiang Ye, Weihua Zhuang, Weiting Zhang, Tao Huang, Yunjie Liu
Summary: In this article, a multilayer Ka/Q-band satellite-terrestrial integrated network for IoRT is proposed, and a deep reinforcement learning approach is used to optimize the computation offloading problem, aiming to achieve high transmission rate and communication robustness.
IEEE INTERNET OF THINGS JOURNAL
(2021)
Article
Computer Science, Hardware & Architecture
Bohao Feng, Yunxue Huang, Aleteng Tian, Hongchao Wang, Huachun Zhou, Shui Yu, Hongke Zhang
Summary: This article introduces an elastic routing framework for software-defined satellite networking, addressing challenges in network maintenance, network convergence, and flow steering. The proposed framework establishes a robust control path and enables customized flow forwarding to meet various user demands.
IEEE WIRELESS COMMUNICATIONS
(2022)
Article
Computer Science, Information Systems
Nhat-Tien Nguyen, Hong-Nhu Nguyen, Ngoc-Long Nguyen, Anh-Tu Le, Tan N. N. Nguyen, Miroslav Voznak
Summary: This paper investigates the performance of a NOMA-based hybrid Satellite-Terrestrial relays system using mmWave technology. The system utilizes multiple antennas and the AF protocol to forward satellite's information. The best relay is chosen based on the rain coefficient as the fading factor. The theoretical derivation is validated through simulation results and the results demonstrate the superiority of NOMA over OMA method.
Article
Computer Science, Information Systems
Rahif Kassab, Andrea Munari, Federico Clazzer, Osvaldo Simeone
Summary: This article investigates the performance of critical service (CS) and non-CS (NCS) for IoT systems sharing a grant-free channel. The study analyzes the impact of using slotted ALOHA for data transmission and concludes that orthogonal interservice resource allocation is generally preferred for NCS devices, while nonorthogonal protocols can improve the throughput of CS devices in both terrestrial and satellite scenarios.
IEEE INTERNET OF THINGS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Shuai Nie, Ian F. Akyildiz
Summary: Small satellites offer shorter development cycles and lower costs compared to traditional satellites, especially in the field of inter-satellite links in the THz band. Research shows that ISLs in the THz band can utilize diversity techniques to achieve high throughput in both near-Earth and deep-space links.
IEEE TRANSACTIONS ON COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Dong-Hyun Jung, Gyeongrae Im, Joon-Gyu Ryu, Seungkeun Park, Heejung Yu, Junil Choi
Summary: Megaconstellations of LEO satellites are being considered as a solution for global coverage with low latency and high throughput. However, as the number of satellites and operators increases, inter-satellite interference becomes a concern. This article introduces the concept of satellite clusters that can enhance network performance through cooperative transmissions. Simulation results show that clustered networks outperform unclustered ones, and viable network architectures are proposed based on 3GPP standards. The future applications of clustered satellite networks are also discussed.
IEEE VEHICULAR TECHNOLOGY MAGAZINE
(2023)
Article
Engineering, Electrical & Electronic
Lu Bai, Qian Xu, Ziwei Huang, Shangbin Wu, Spiros Ventouras, George Goussetis, Xiang Cheng
Summary: This article proposes a novel atmospheric data-driven Q-band satellite channel model using two artificial neural networks, multilayer perceptron and long short-term memory (LSTM), to estimate real-time channel attenuation. By selecting seven atmospheric parameters, the model can accurately estimate satellite channel attenuation and is less complex compared to a model using 14 parameters. The accuracy performance and complexity of the multilayer perceptron and LSTM in this model are also analyzed.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Abdulmajeed Al-Jumaily, Aduwati Sali, Vctor P. Gil Jimenez, Fernando Perez Fontan, Mandeep Jit Singh, Alyani Ismail, Qusay Al-Maatouk, Ali M. Al-Saegh, Dhiya Al-Jumeily
Summary: This paper investigates the interference of 5G on Fixed Satellite Services and proposes a filtering model (FIREBRING) to mitigate the interference. By using a specific frequency band Low-Noise Block and down-converter, the signal interference can be reduced within an acceptable range.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Lorenzo Luini, Alberto Panzeri, Carlo G. Riva, Domingo Pimienta-del-Valle, Jose Manuel Riera
Summary: The Time Diversity Stratiform Convective EXCELL (TD-SCEX) model is a useful tool for predicting the effectiveness of time diversity in improving the performance of EHF Earth-space communication systems. The model utilizes the SC EXCELL model to predict joint rain attenuation statistics and time diversity gains, based on link characteristics and rain rate statistics.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Kaiqiang Lin, Muhammad Asad Ullah, Hirley Alves, Konstantin Mikhaylov, Tong Hao
Summary: Wireless underground sensor networks (WUSNs) can bring significant social and economic benefits in various fields. However, many of the application scenarios are in remote areas without infrastructure. In this study, we propose the underground direct-to-satellite (U-DtS) connectivity approach to address this challenge. We discuss alternative architectures and simulate a smart-farming scenario to study the feasibility and performance of U-DtS mMTC using LoRaWAN technology. Results show that LR-FHSS modulation is promising for U-DtS networks.
IEEE COMMUNICATIONS MAGAZINE
(2023)
Article
Computer Science, Hardware & Architecture
Wei Shi, Wei Xu, Xiaohu You, Chunming Zhao, Kejun Wei
Summary: This article provides a tutorial overview of intelligent reflection communication (IRC) technologies, including reconfigurable intelligent surface (RIS) and ambient backscatter communication (AmBC), to support the requirements of Internet-of-Everything (IoE) applications. The benefits of IRC-assisted IoE in space-air-ground integrated communications and green communications are elaborated, along with the potential for enhancing IoE security. Numerical results highlight the importance of IRC in unfavorable secrecy environments.
IEEE WIRELESS COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Xiuyuan Chen, Chao Lin, Wei Wu, Jianting Ning, Junzuo Lai, Debiao He
Summary: This article introduces a deep reuse solution based on a shared satellite network architecture and analyzes the problems faced by this solution from the perspectives of security and efficiency. Meanwhile, it outlines potential blockchain-based technologies to address these issues and outlines future directions for development in this field.
IEEE COMMUNICATIONS MAGAZINE
(2023)
Article
Engineering, Electrical & Electronic
Shu Sun, Theodore S. Rappaport, Mansoor Shafi, Pan Tang, Jianhua Zhang, Peter J. Smith
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2018)
Article
Engineering, Electrical & Electronic
Viduneth Ariyarathna, Arjuna Madanayake, Xinyao Tang, Diego Coelho, Renato J. Cintra, Leonid Belostotski, Sownyajit Mandal, Theodore S. Rappaport
IEEE JOURNAL ON EMERGING AND SELECTED TOPICS IN CIRCUITS AND SYSTEMS
(2018)
Article
Engineering, Electrical & Electronic
Shu Sun, Theodore S. Rappaport, Mansoor Shafi, Harsh Tataria
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
(2018)
Article
Engineering, Electrical & Electronic
George R. MacCartney, Theodore S. Rappaport
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
(2019)
Article
Engineering, Electrical & Electronic
Arjuna Madanayake, Viduneth Ariyarathna, Suresh Madishetty, Sravan Pulipati, Renato J. Cintra, Diego Coelho, Raiza Oliviera, Fabio M. Bayer, Leonid Belostotski, Soumyajit Mandal, Theodore S. Rappaport
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2020)
Article
Engineering, Electrical & Electronic
Shihao Ju, Yunchou Xing, Ojas Kanhere, Theodore S. Rappaport
Summary: This study presents an indoor 3-D spatial statistical channel model for mmWave and sub-THz frequencies based on extensive radio propagation measurements at 28 and 140 GHz. The resulting channel statistics show that the number of time clusters follows a Poisson distribution and the number of subpaths within each cluster follows a composite exponential distribution. A unified indoor statistical channel model for mmWave and sub-Terahertz frequencies is proposed, and a corresponding indoor channel simulator is developed for future air-interface, beamforming, and transceiver designs in 6G and beyond.
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Dipankar Shakya, Ting Wu, Michael E. Knox, Theodore S. Rappaport
Summary: Emerging applications in wireless sensing, position location, robotics, and more rely on ultra-wide bandwidths at millimeter-wave and Terahertz frequencies. This study introduces a compact sliding correlation-based channel sounder baseband built on a monolithic integrated circuit using 65 nm CMOS, providing a cost-effective solution with 2 GHz RF bandwidth for studying multipath characteristics.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2021)
Article
Engineering, Electrical & Electronic
Najath Akram, Viduneth Ariyarathna, Soumyajit Mandal, Leonid Belostotski, Theodore S. Rappaport, Arjuna Madanayake
Summary: This study reduces the number of receivers and ADCs in wireless systems by exploiting directional sparsity, minimizing performance loss under certain conditions. By using a multidimensional linear transformation and combiner, significant reductions in ADC complexity can be achieved, with validation under sparsity conditions.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2021)
Article
Telecommunications
Yunchou Xing, Theodore S. Rappaport
Summary: This letter presents comparisons of outdoor Urban Microcell (UMi) large-scale path loss models, RMS delay spreads (DS), angular spreads (AS), and the number of spatial beams at different frequencies. It was found that path loss exponents are similar across frequencies, while RMS DS and AS decrease with increasing frequency. This implies that wider bandwidth channels at sub-THz or THz frequencies will cover similar distances due to the quadratic increase in antenna gains with frequency.
IEEE COMMUNICATIONS LETTERS
(2021)
Proceedings Paper
Computer Science, Information Systems
Hitesh Poddar, Tomoki Yoshimura, Matteo Pagin, Theodore S. Rappaport, Art Ishii, Michele Zorzi
Summary: This article presents a detailed implementation of the drop-based NYU channel model for studying wireless propagation in sub-THz frequencies in various scenarios. The authors emphasize the importance of accurate characterization of wireless propagation for the design and evaluation of future wireless networks.
PROCEEDINGS OF THE 2023 WORKSHOP ON NS-3, WNS3 2023
(2023)
Article
Engineering, Electrical & Electronic
Jaswinder Lota, Shihao Ju, Ojas Kanhere, Theodore S. Rappaport, Andreas Demosthenous
Summary: This paper proposes a millimeter-wave vehicular localization method using difference of arrival for time and frequency and multiuser hybrid beamforming, which can overcome errors caused by channel scattering and randomness, as well as vehicle mobility. Increasing the number of vehicles can improve the accuracy of localization.
IEEE OPEN JOURNAL OF VEHICULAR TECHNOLOGY
(2022)
Article
Computer Science, Information Systems
Najath Akram, Arjuna Madanayake, Sravan Pulipati, Viduneth Ariyarathna, Satheesh Bojja Venkatakrishnan, Dimitra Psychogiou, John Volakis, Theodore S. Rappaport, Thomas L. Marzetta
Summary: This paper explores the use of frequency division multiplexing (FDM) to combine multiple antenna outputs into a single wideband signal for communication at mm-wave frequencies and above. By filtering and down-converting sampled signals, individual antenna channels can be obtained from the single wideband signal. Frequency-multiplexing the receiver chains at an intermediate frequency reduces the need for multiple precise local oscillators, improving efficiency in beamforming antenna arrays.
Article
Computer Science, Information Systems
Arjuna Madanayake, Renato J. Cintra, Najath Akram, Viduneth Ariyarathna, Soumyajit Mandal, Vitor A. Coutinho, Fabio M. Bayer, Diego Coelho, Theodore S. Rappaport
Article
Computer Science, Information Systems
Theodore S. Rappaport, Yunchou Xing, Ojas Kanhere, Shihao Ju, Arjuna Madanayake, Soumyajit Mandal, Ahmed Alkhateeb, Georgios C. Trichopoulos
