This textbook goes to the heart of telecommunications engineering by developing the underlying concepts and linking them to how system specifications are determined by standards bodies – and how systems are designed and implemented by equipment manufacturers. In this regard, the book is comprehensive in covering all important aspects of wireless networks. Tailored to undergraduate/graduate students and practicing engineers, this book presents the fundamental concepts in a concise manner, while retaining the rigor needed to truly understand wireless communications. Importantly, the book ties these developments to how these concepts are implemented in fielded systems, discussing the motivations behind the design choices made in 4G and 5G wireless communications. The book bridges the gap between theory and application, presenting key practical issues.