This book is intended for senior undergraduate and graduate students, as well as practicing engineers and managers who are involved in research, design, implementation and analysis of a higher generation of wireless mobile communications systems. In this book, there are thirteen chapters which cover the wireless networking evolution and technological advancements toward 5G. Although current technologies like 4G LTE-A are available to us, the staggering increase in the number of people moving towards mobile broadband for multiple services and other value added services is becoming a challenge for the service providers to keep up with all aspects of the market’s comprehensive needs; this capital-intensive investment industry possesses tensions that exist between performance factors vs cost, availability and efficiency. 5G systems are expected to provide a huge leap in the technology world with an infrastructure that will expedite the growth, connectivity and smartness of all types of devices, with significant increase in capacity and interoperability while maintaining a high quality of services (QoS). The major difference between this new generation and 4G LTE from a consumer point of view is not just a higher data rate requirement, but also to provide seamless access and enhanced personalised services while protecting their privacy and personal information. The author is very pleased that the technology, academia, and industry communities are discussing this important and fast growing industry, and he is certain that the content of this book will shed some important light on this subject. The chapters presented in this book discuss visions, research, design and implementation of various aspects of 5G wireless networking and applications. The challenges faced in providing a new platform, business models, radio access, and billions of device connectivity in the near future with unseen applications and services to meet user experiences ubiquitously and securely are also presented.