Location-aware computing is a technology that uses the location (provides granular geographical information) of people and objects to derive contextual information. Today, one can obtain this location information free of cost through smartphones. Smartphones with location enabled applications have revolutionized the ways in which people perform their activities and get benefits from the automated services. It especially helps to get details of services in less time; wherever the user may be and whenever they want. The need for smartphones and location enabled applications has been growing year after year. Nowadays no one can leave without their phone; the phone seemingly becomes one of the parts of the human body. The individual can now be predicted by their phone and the identity of the phone becomes the person's identity. Though there is a tremendous need for location-enabled applications with smartphones, the debate on privacy and security related to location data has also been growing. Privacy and Security Challenges in Location Aware Computing provides the latest research on privacy enhanced location-based applications development and exposes the necessity of location privacy preservation, as well as issues and challenges related to protecting the location data. It also suggests solutions for enhancing the protection of location privacy and therefore users' privacy as well. The chapters highlight important topic areas such as video surveillance in human tracking/detection, geographical information system design, cyberspace attacks and warfare, and location aware security systems. The culmination of these topics creates a book that is ideal for security analysts, mobile application developers, practitioners, academicians, students, and researchers.

This book, edited and authored by world leading experts, gives a review of the principles, methods and techniques of important and emerging research topics and technologies in wireless communications and transmission techniques. The reader will: Quickly grasp a new area of research Understand the underlying principles of a topic and its application Ascertain how a topic relates to other areas and learn of the research issues yet to be resolved

The inadequate use of wireless spectrum resources has recently motivated researchers and practitioners to look for new ways to improve resource efficiency. As a result, new cognitive radio technologies have been proposed as an effective solution. Sensing Techniques for Next Generation Cognitive Radio Networks is a pivotal reference source that provides vital research on the application of spectrum sensing techniques. While highlighting topics such as radio identification, compressive sensing, and wavelet transform, this publication explores the standards and the methods of cognitive radio network architecture. This book is ideally designed for IT and network engineers, practitioners, and researchers seeking current research on radio scene analysis for cognitive radios and networks.

The dramatic growth of the wireless communication industry growth has resulted in searches for new technologies to provide broader bandwidth per user channel, better quality, and new value-added services. Employing smart antennas presents an elegant and relatively economical way to improve the performance of wireless transmission.""The Handbook on Advancements in Smart Antenna Technologies for Wireless Networks"" is the most comprehensive reference source on smart antenna technologies. Featuring chapter contributions from leading experts in both academia and industry, this uniquely comprehensive reference offers in-depth descriptions of terminologies, concepts, methods, and applications related to smart antennas in various wireless systems.

This authoritative book gives you new perspective on the RF and analog hardware and systems design aspects of software defined radio. It delves into the architecture of transmitters and receivers that make software-defined radio a reality. Covering both the practical aspects and underpinnings of these architectures, the book details all key RF and analog baseband components and sub-systems, from the converters that interface with DSPs and ASICs through to the duplexer feeding the antenna. It enables you to select the right technique for any application by providing alternatives for implementing the main system components.

Technological advances have created a need for the merger and rethinking of past testing approaches for wireless equipment. This first-of-its-kind resource offers professionals an in-depth overview of cutting-edge RF (radio frequency) and SOC (system on a chip) product testing for wireless communications.

This book includes architectures by Babak Matinpour and Joy Laskar. It describes the actual implementation of receiver architectures from the initial design to an IC based product. It presents many tricks of the trade not usually covered in textbooks. It covers a range of practical issues including semiconductor technology selection, cost versus performance, yield, packaging, prototype development, testing, and analysis. It also discusses architectures that are employed in modern broadband wireless systems.

Achieve first-time-success designing RF and microwave amplifiers and oscillators using the iterative synthesis techniques provided in this practical resource. The book introduces new approaches to help you estimate the 1dB compression point of class A and class B linear circuits, initialize the fundamental component voltages and currents in a harmonic balance simulator, and more easily generate load-pull contours for class A and class B transistors.

Considered as a generalization of the Cripps approach, this independently developed method can be applied easily to control or predict the output power in single- or multi-stage amplifiers. Changes in the transistor's configuration, as well as feedback and loading can also be handled smoothly.

This book helps you:
gain greater insight into the characteristics of single-layer parallel plate capacitors and provide accurate models for them
obtain a clear picture of the stability of each stage in the amplifier and control the output power and oscillation frequency of an oscillator based on linear principles
design class A high dynamic range amplifiers, multistage power amplifiers, amplifiers with an optimum noise match and a low input VSWR, and wideband impedance-matching networks

The book also includes all of the design principles, theory, and background from the well-received first edition. It is an excellent resource for amplifier and oscillator designers, RF and microwave engineers, and university students.

The continuing growth of wireless networks is being driven by ease of installation, flexibility and mobility, offering gains in efficiency, accuracy and lower business costs. This fresh perspective from two experts in the field provides professionals with a practical approach to design implementation, evaluation and problem-solving, which underscores its uniqueness as a hands-on guide to next generation wireless communications systems. The book offers practitioners a wealth of information on WLAN (wireless local area network) implementation, deployment and results. Key topics include: IP networking for wireless; wireless networking and Internet access standards; changes in the IEEE 802.11 standard; system design and implementation; and performance analysis.

Designed for microwave and RF engineers, this is a presentation of nonlinear microwave and RF circuits. It offers an understanding of the theory of nonlinear circuit analysis that they need for their work in the field. There is guidance on designing nonlinear circuits and modelling solid-state devices for nonlinear circuit analysis by computer, showing how characteristics of such models affect the analysis of these circuits. This second edition features new material, including critical discussions on nonlinear analysis of oscillators and design issues relating to RF (radio frequency) and wireless technology. More than 120 illustrations support key topics throughout the text.