Overview

This book provides solutions to some of the issues present in the physical layer of current high-frequency wireless communication systems. It reviews the development history of high-frequency wireless communication systems, pinpoints certain existing problems in contemporary high-frequency communication systems, and proposes solutions. The 6th Generation Mobile Networks (6G) is based on terrestrial cellular networks and integrates satellite communication, drone communication, and marine communication to form an integrated air-ground-sea network, providing comprehensive coverage, high speed, high security, and multifunctional communication solutions. High-frequency wireless communication, represented by millimeter-wave and terahertz communications, offers a wide available spectrum and high transmission rates, making it a highly promising broadband wireless access technology in 6G. To achieve higher transmission rates (Tbps level), lower transmission latency (millisecond level), higher security performance (physical layer security), and stronger hardware integration (communication-sensing integration), high-frequency wireless transmission faces many challenges due to characteristics such as short wavelengths, high path loss, and weak components. These challenges include: Large link attenuation and poor coverage in high-frequency wireless communication systems, resulting in low spectrum efficiency for edge users.Low output power, poor linearity, and low efficiency of high-frequency power amplifiers, making it difficult to achieve long-distance transmission of wideband signals.High sidelobe energy in high-frequency multi-user secure transmission, leading to unfocused spatial regions and low transmission efficiency.Independent design functions and high information processing delay in high-frequency communication and sensing, causing wastage of spectrum resources and hardware resources.To address these challenges, the author has conducted innovative work aimed at improving the spectrum efficiency, power amplifier efficiency, transmission efficiency, and processing efficiency of high-frequency wireless transmission. The research findings have been published in high-impact journals such as IEEE Transactions on Vehicular Technology, Microwave Theory and Techniques, Broadcasting, IEEE Sensors Journal, and IEEE Wireless Communications Letters. Based on these foundations, this book is dedicated to discussing efficient transmission technology for high-frequency wireless communications with a focus on 6G. The book addresses fields such as signal processing, spectrum management, and high-efficiency sustainable communications. It is highly recommended for academic researchers, students, and engineers in wireless communication, terahertz communication, and electronic information fields.

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9789819658930

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Jiangguo Li, an Assistant Professor at the School of Cyberspace Science and Technology at Beijing Institute of Technology, has been deeply involved in academic research and engineering practice in the fields of terahertz and millimeter-wave communication. He obtained his Ph.D. in Information and Communication Engineering from Beijing Institute of Technology in 2022. As the first author or corresponding author, he has published 11 SCI papers in international journals such as IEEE IoT, IEEE TVT, IEEE TWC, and IEEE WCL, and has been granted 2 Chinese invention patents. Jianxiong Pan, a Doctoral student at the School of Electronic and Information at Beijing Institute of Technology, received the B.S. degree in Electronic Information Engineering from Beijing Institute of Technology, China, in 2019. He conducts research in the fields of physical layer communications, integrated sensing and communications, deep learning, and non-orthogonal signal processing. He has published 10 SCI papers (with 1 being highly cited by ESI), received the Best Paper Award at an international conference. Yujie Lin, a Laboratory Instructor at the School of Information and Electronics at Beijing Institute of Technology, holds a Ph.D. in Information and Communication Engineering. She conducts research in the field of satellite communication. Neng Ye, an Assistant Professor at the School of Cyberspace Science and Technology at Beijing Institute of Technology, holds a Ph.D. in Information and Communication Engineering. He conducts research in the fields of aerospace multi-user communication and signal processing. He has published over 30 SCI papers (with 3 being highly cited by ESI), received the Best Paper Award at an international conference, and his papers have been cited over a thousand times according to Google Scholar. As the first author, he has published 2 monographs with Springer Nature. Kai Yang, a Professor at the School of Electronic and Information at Beijing Institute of Technology, received the B.E. degree in communications engineering from the National University of Defense Technology, Changsha, China, in 2005 and the Ph.D. degree in communications engineering from the Beijing Institute of Technology, Beijing, China, in 2010. From January 2010 to July 2010, he was with the Department of Electronic and Information Engineering, Hong Kong Polytechnic University, Hong Kong. From 2010 to 2013, he was with Alcatel-Lucent Shanghai Bell, Shanghai, China. In 2013, he joined the Laboratoire de Recherche en Informatique, University Paris Sud 11, Orsay, France. His current research interests include convex optimization, massive MIMO, mmWave systems, resource allocation, and interference mitigation.

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