Comprehensive reference on the latest trends, solutions, challenges, and future directions of 5G communications and beyond Current and Future Cellular Systems: Technologies, Applications, and Challenges covers the state of the art in architectures and solutions for 5G wireless communication and beyond. This book is unique because instead of focusing on singular topics, it considers various technologies being used in conjunction with 5G and beyond 5G technologies. All new and emerging technologies are covered, along with their problems and how quality of service (QoS) can be improved with respect to future requirements. This book highlights the latest trends in resource allocation techniques due to different device (or user) characteristics, provides a special focus on wide bandwidth millimeter wave communications including circuitry, antennas, and propagation, and discusses the involvement of decision-making processes assisted by artificial intelligence/machine learning (AI/ML) in applications such as resource allocation, power allocation, QoS improvement, and autonomous vehicles. Readers will also learn to develop mathematical modeling, perform simulation setup, and configure parameters related to simulations. Current and Future Cellular Systems includes information on: The Internet of Vehicles (IoV), covering requirements, challenges, and limitations of Cellular Vehicle-to-Everything (C-V2X) with Resource Allocation (RA) techniquesIntelligent reflecting surfaces, unmanned aerial vehicles, power optimized frameworks, challenges in a sub-6 GHz band, and communication in a THz bandThe role of IoT in healthcare, agriculture, smart home applications, networking requirements, and the metaverseQuantum computing, cloud computing, spectrum sharing methods, and performance analysis of WiFi 6/7 for indoor and outdoor environments Providing expansive yet accessible coverage of the subject by exploring both basic and advanced topics, Current and Future Cellular Systems serves as an excellent introduction to the fundamentals of 5G and its applications for graduate students, researchers, and industry professionals in the field of wireless communication technologies.