l capabilities and potential use cases. 5G is designed to provide ultra-reliable low latency communication, which opens completely new application areas for enterprise communication, like remote control, or for consumer communication like esports and cloud gaming. 5G will also boost mobile broadband performance to data rates beyond 10 Gbps. Those impressive targets require new solutions for 5G mobile networks, including new spectrum options, new antenna structures, new physical layer and protocols designs, and new network architectures. A deep understanding of the underlying 5G technology allows one to take full advan- tage of the new capabilities. This book describes the details of 5G specifications and the practical deployment aspects. We hope you enjoy reading the book! xxiii Acknowledgment The editors would like to acknowledge the hard work of the contributors from Nokia Bell Labs, Nokia, NTT Docomo, MediaTek, and Skyworks: Hiroyuki Atarashi, Dominique Brunel, YihShen Chen, Mihai Enescu, Jiann-Ching Guey, Tero Henttonen, Chienhwa Hwang, Mikio Iwamura, Suresh Kalyanasundaram, Yoshihisa Kishiyama, Jarkko Koskela, Mads Lauridsen, PeiKai Liao, Timo Lunttila, Riku Luostari, Esa Metsälä, Satoshi Nagata, Laurent Noël, Miikka Poikselkä, Karri Ranta-aho, Rapeepat Ratasuk, Jussi Reunanen, Juha Salmelin, Benoist Sébire, Guillaume Sébire, Satoshi Suyama, Puripong Thepchatri, Tommi Uitto, Petri Vasenkari, Venkat Venkatesan, Weide Wu, and Weidong Yang. We also would like to thank the following colleagues for their valuable comments and contributions: Sudharsan Ganesan, Shalini Gulati, Hiroki Harada, Rauli Järvelä, Ahlem Klass, Matti Laitila, Danieala Laselva, Vesa Lehtinen, Henrik Liljestrom, Pertti Lukander, Pekka Marjelund, Peter Merz, Arto Mikkonen, Amit Mukhopadhyay, Jihesh P. Nair, Klaus Pedersen, Johanna Pekonen, Rauno Ruismäki, Moushumi Sen, Juha Sipilä, Tami Stegmaier, Samuli Turtinen, and Chunli Wu. We appreciate the fast and smooth editing process provided by our publisher, Wiley, and especially Sherlin Benjamin 