tailieunhanh - Điện thoại di động băng thông rộng không dây P1

Summary and Introduction Broadband wireless communications have gained an increased interest during the last few years. This has been fuelled by a large demand on high frequency utilisation as well as a large number of users requiring simultaneous high data rate access for the applications of wireless mobile Internet and e-commerce. The convergence of wireless mobile and access will be the next storm in the wireless communications, which will use a new network architecture to deliver broadband services in a more generic configuration to wireless customers and supports value-added services and emerging interactive multimedia communications | Broadband Wireless Mobile 3G and Beyond. Edited by Willie W. Lu Copyright 2002 John Wiley Sons Ltd. ISBN 0-471-48661-2 1 Summary and Introduction Broadband wireless communications have gained an increased interest during the last few years. This has been fuelled by a large demand on high frequency utilisation as well as a large number of users requiring simultaneous high data rate access for the applications of wireless mobile Internet and e-commerce. The convergence of wireless mobile and access will be the next storm in the wireless communications which will use a new network architecture to deliver broadband services in a more generic configuration to wireless customers and supports value-added services and emerging interactive multimedia communications. Large bandwidth guaranteed quality of service and ease of deployment coupled with recent great advancements in semiconductor technologies make this converged wireless system a very attractive solution for broadband service delivery. Introduction The future of wireless is not just wireless it is a part of life . When we trace back to the 1980s everyone dreamed to have a nice mobile phone. But if we dream of the wireless picture in 2010 the story will be totally different. Why Because by that time the wireless infrastructure not just for communications will be totally multi-dimensional whether in technologies diversified and harmonised applications free mobile local or global or services service bandwidth on demand . Our wireless personal communicator or assistant the size of a wallet or up to a book with enough bandwidth and memory can help us enjoy our lives. Wireless becomes easy and affordable in the mass market even when you are away from your office your business will never be off-line. The global roaming and high-speed wireless link thanks to the tremendous silicon advancements will make our travels wonderful and feel at home. The key applications evolved from the advancement of broadband wireless and .