As 3G mobile communication systems are being deployed, the research community is now focusing on the research needed for the long-term evolution of 3G and 4G systems. This fully updated second volume of the successful Technologies for the Wireless Future is a unique and timely book, presenting up-to-the-minute ideas and trends in mobile communications. The result of pioneering cooperative work of many academic and industrial researchers from WWRF, this comprehensive single point of reference examines the specifications and requirements of 4G and identifying potential business models, research areas and required spectrum and enabling technologies. Features a wealth of new material, including three new chapters on short-range wireless communications, security and trust, and self-organisation in communication networks, new coverage of reconfigurability, ad hoc networking and multi-user MIMO. The content will have wide-ranging appeal to engineers, researchers, managers and students with an interest in the future of wireless.