This book discusses the lightweight, reconfigurable, and deployable origami antennas for adaptive communication systems. Traditional antennas, with their fixed characteristics, struggle to meet the evolving needs of modern communication systems. Reconfigurable antennas, on the other hand, can dynamically adjust their operating parameters, offering significant advantages in terms of performance, size, and cost. Origami technology has emerged as a disruptive force in antenna design, enabling the development of lightweight, reconfigurable antennas with tailored radiation characteristics. Deployable origami antennas offer a transformative solution for applications demanding mobility and rapid deployment in challenging environments. These innovative antennas hold immense promise to revolutionize communication systems, paving the way for a future where adaptability and versatility are paramount.

Interactive mobile technologies are today the core of many—if not all—fields of society. Not only the younger generation of students expects a mobile working and learning environment. And nearly daily new ideas, technologies, and solutions boost this trend.

This book presents the intersection of two dynamic fields: Reinforcement Learning (RL) and RIS- Assisted Wireless Communications. With an emphasis on both discrete and continuous problems, it introduces a comprehensive overview of RL techniques and their applications in the evolving world of RIS-assisted wireless communications. Chapter 1 introduces the fundamentals of RL and deep RL (DRL), providing a solid foundation for understanding subsequent chapters. It also presents the Q-learning, deep Q-learning, and deep deterministic policy gradient algorithms. Chapter 2 provides a holistic overview of RIS-assisted systems and details several use cases in wireless communications. Then, Chapters 3 and 4 present various applications of the discrete and continuous DRL to RIS-assisted wireless communications. From maximizing the sum-rate to minimizing, the system resources and maximizing the energy efficiency. These chapters showcase the versatility of the DRL algorithms in tackling a range of challenges. This book concludes with Chapter 5, which introduces the challenges and future directions in this field. It explores the particulars of hyperparameter tuning, problem design, and complexity analysis, while also highlighting the potential of hybrid DRL, multi-agent DRL, and transfer learning techniques for advancing wireless communication systems.

What changes have affected the definition of the boundaries of journalism in the last decade? How do technologies influence the boundaries of journalism? Are threats and opportunities identified in those blurred areas of journalism? The aim of this book is to answer these questions and to address, from different perspectives, the redefinition of the boundaries of journalism according to the most recent changes in digital media concerning actors, models, and practices.

This book provides comprehensive insights into the theory, models, and unique characteristics of intelligent reflecting surface (IRS) and its appealing applications in wireless information and power transmission for B5G/6G. It is organized as follows:

This book gathers selected papers presented at the International Conference on Artificial Intelligence and Communication Technologies (ICAICT2023), held at Shenzhen, China during June 2023. The first volume of the proceedings will focus on the newest methods and algorithms in smart wireless communications in the areas of Remote sensing and machine learning, Intelligent image and data processing, Health systems and security, Intelligent teaching applications and many others.

The book covers a large class of nonlinear systems with many practical engineering applications. The approach is based on the extension of linear systems theory using the Volterra series. In contrast to the few existing treatments, our approach highlights the algebraic structure underlying such systems and is based on Schwartz’s distributions (rather than functions). The use of distributions leads naturally to the convolution algebras of linear time-invariant systems and the ones suitable for weakly nonlinear systems emerge as simple extensions to higher order distributions, without having to resort to ad hoc operators.

This book is a collection of selected high-quality research papers presented at International Conference on Paradigms of Communication, Computing and Data Analytics (PCCDA 2023), held at South Asian University, New Delhi, India, during 22–23 April 2023. It discusses cutting-edge research in the areas of advanced computing, communications and data science techniques. The book is a collection of latest research articles in computation algorithm, communication and data sciences, intertwined with each other for efficiency.

This book addresses the use of existing and emerging electronic payment technologies within a smart city in the context of the clear and proven value these systems have demonstrated in improving transportation. It addresses such question as How does the toll gantry work? How does it read the transponder tag and deduct the correct amount? How do cities harness the transaction data from mass transit to better meet the demand during peak hours? What can city planners do to make trip scheduling and payments seamless, so commuters can go from park-and-ride to mass transit to ride-share with a single payment platform? The volume is technical in nature and describes solid technical solutions to engineers and planners associated with smart cities initiatives. It is specifically designed to support smart city designers and engineers as they develop strategies that incorporate the latest payment system technologies. It will also be of value to private sector payment systems solution providers looking to deliver their products and services to smart cities. In addition, the book supplements technical perspectives with guidance on planning and implementation. For example, it defines procurement approaches for emerging technologies such as crypto currencies and block chain. Rounding out technical detail with advice on policy and the organizational framework required to underpin the technologies, the book delivers practical support to smart city technical practitioners. It further stands as an appropriate text for university courses associated with smart city planning, operations, and urban analytics.

The book focuses on the advanced mmWave/Sub-terahertz ultra-massive MIMO wireless communications, which are regarded as a promising paradigm shift in future 5G beyond and even 6G. This is achieved by providing a comprehensive review of the rapidly developing field of massive MIMO communication, in-depth discussions on the impact of extremely large-scale antenna array, and detailed numerical simulation results on our proposed schemes. Several case studies are given after introducing basic communication system components, and the simulation codes are open sourced in our book, which shows the reproducibility of our models and methods and provides convenience for readers such as researchers, engineers, and graduate students in the fields of wireless communications.

This book discusses automated computing systems which are mostly powered by intelligent technologies like artificial intelligence, machine learning, image recognition, speech processing, cloud computing, etc., to perform complex automated tasks which are not possible by traditional computing systems. The chapters are extended version of research works presented at second PhD Research Symposium in various advanced technologies used in the field of computer science. This book provides an opportunity for the researchers to get ideas regarding the ongoing works that help them in formulating problems of their interest. The academicians can also be benefited to know about the current research trends that smooth the way to guide their students to carry out research work in the proper direction. The industry people will be also facilitated to know about the current advances in research work and materialize the research work into industrial applications.

This book examines how mobile phones and the internet have become a vital part of the everyday lives of people experiencing homelessness. But the access mobile phones provide is costly, insecure and limited, producing an experience of being precariously connected. Drawing on findings of research conducted with over one hundred young people, families and adults experiencing homelessness in Australia and the United States, this book analyses homelessness as a mediated condition and explores the underpinning processes that shape digital disparities. It contributes to scholarship on mobile communication and inequality, highlighting the digital patterns, issues and difficulties of a group disproportionately affected by service reform and developments in digital citizenship, smart cities and algorithmic governance.

This book presents recent advances in the area of Radioscience, Equatorial Atmospheric Science and Environment from the international symposium for equatorial atmosphere of the celebration of the Equatorial Atmosphere Radar (EAR) 20th Anniversary, conducted by Indonesian National Institute of Aeronautics and Space (LAPAN) and Kyoto University, in 2021. It provides a scientific platform for all participants to discuss ideas and current issues as well as to design solutions in the areas of atmospheric science, environmental science, space science, and related fields.