Wireless Ad Hoc and Sensor Networks: A Cross-Layer Design Perspective deals with the emerging design trend that transcends traditional communication layers for performance gains in ad hoc and sensor networks. The author explores the current state of the art in cross-layer approaches for ad hoc and sensor networks, providing a comprehensive design resource.
The book offers a structured comparison and analysis of both layered and cross-layer design, providing readers with an overview of the many issues relating to ad hoc and sensor networks. The benefits of these cross-layer approaches are examined through three diverse case studies: a monitoring sensor network using Radio Frequency waves, an ad hoc network that uses Ultra Wide Band Radio, and an acoustic underwater sensor network for environmental monitoring.
Wireless Ad Hoc and Sensor Networks: A Cross-Layer Design Perspective is interdisciplinary in character, and should be of value to software engineers, hardware engineers, application developers, network protocol designers, graduate students, communication engineers, systems engineers, and university professors.
Contemporary distributed file systems are monolithic and only support single file abstractions. Nowadays, as Sai-Lai Lo explains, network storage devices have to accommodate new information media such as digital audio and video, with data radically different from the traditional text and binary code that contemporary file systems are optimized for. In this book, the author shows how, by combining new and traditional media, information can be recorded and presented in the most suitable way, and the value of a piece of information can be further enhanced by linking together related pieces. However, composite data and cross-reference between data items raise a number of system issues that have not been addressed properly before. Lo defines a new multiservice storage architecture that meets the needs of existing and emerging applications and can support multiple file abstractions. He also explores a number of related design issues. Researchers in the areas of distributed systems, network multimedia and network storage services will enjoy this book.
. The Cell Processor from Sony, Toshiba and IBM (STI) , and the Sun UltraSPARC T1 (formerly codenamed Niagara)  signal the growing popularity of such systems. Furthermore, Intel s very recently announced 80-core TeraFLOP chip  exemplifies the irreversible march toward many-core systems with tens or even hundreds of processing elements. 1.2 The Dawn of the Communication-Centric Revolution The multi-core thrust has ushered the gradual displacement of the computati- centric design model by a more communication-centric approach . The large, sophisticated monolithic modules are giving way to several smaller, simpler p- cessing elements working in tandem. This trend has led to a surge in the popularity of multi-core systems, which typically manifest themselves in two distinct incarnations: heterogeneous Multi-Processor Systems-on-Chip (MPSoC) and homogeneous Chip Multi-Processors (CMP). The SoC philosophy revolves around the technique of Platform-Based Design (PBD) , which advocates the reuse of Intellectual Property (IP) cores in flexible design templates that can be customized accordingly to satisfy the demands of particular implementations. The appeal of such a modular approach lies in the substantially reduced Time-To- Market (TTM) incubation period, which is a direct outcome of lower circuit complexity and reduced design effort. The whole system can now be viewed as a diverse collection of pre-existing IP components integrated on a single die."