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The goal of Unlicensed Mobile Access (UMA) is to provide seamless access to GSM and GPRS mobile service networks via unlicensed spectrum technologies, including Bluetooth, WiMAX, and Wi-Fi. Expanding on the level of knowledge in this growing field, Unlicensed Mobile Access Technology: Protocols, Architectures, Security, Standards, and Applications presents the first complete cross-referenced resource exploring UMA and UMA-relevant technologies. When operating successfully, the technology supporting dual-mode enabled mobile terminals allows subscribers to roam freely and seamlessly between cellular networks. However, various technical challenges still occasionally impede clear communication. This book explores the complex issue of mobility management ...

To configure and maintain an operating system is serious business. With UNIX and its wide variety of flavors, it can be especially difficult and frustrating, and networking with UNIX adds still more challenges. UNIX Administration: A Comprehensive Sourcebook for Effective Systems Network Management is a one-stop handbook for the administration and maintenance of UNIX systems and networks. With an outstanding balance of concepts and practical matters, it covers the entire range of administrative tasks, from the most basic to the advanced, from system startup and shutdown to network security and kernel reconfiguration. While focusing on the primary UNIX platforms, the author discusses all of the most common UNIX flavors, including Solaris, Linux, HP-U...

Data compression is one of the main contributing factors in the explosive growth in information technology. Without it, a number of consumer and commercial products, such as DVD, videophone, digital camera, MP3, video-streaming and wireless PCS, would have been virtually impossible. Transforming the data to a frequency or other domain enables even more efficient compression. By illustrating this intimate link, The Transform and Data Compression Handbook serves as a much-needed handbook for a wide range of researchers and engineers.The authors describe various discrete transforms and their applications in different disciplines. They cover techniques, such as adaptive quantization and entropy coding, that result in significant reduction in bit rates wh...

The responsibilities of the system engineer are many and varied, especially as they relate to facility design and construction. Successful execution of these responsibilities requires an understanding of the underlying technologies, the applicable quality standards, and the proper methods for achieving them. The Communications Facility Design Handbook is dedicated to providing and supporting that understanding. It examines the tasks and functions of the system engineer and establishes a foundation for designing, installing, operating, and maintaining audio, video, computer, and radio frequency systems and facilities.Unique in its scope and its approach, The Communications Facility Design Handbook describes the important steps required to take a proje...