The subject of Discrete Signals and Systems is broad and deserves a single book devoted to it. The objective of this textbook is to present all the required material that an undergraduate student will need to master this subject matter and the use of MATLAB. This book is primarily intended for electrical and computer engineering students, and especially for use by juniors or seniors in these undergraduate engineering disciplines. It can also be very useful to practicing engineers. It is detailed, broad, based on mathematical basic principles, focused, and it also contains many solved problems using analytical tools as well as MATLAB. The book is ideal for a one-semester course in the area of discrete linear systems or digital signal processing, where the instructor can cover all chapters with ease. Numerous examples are presented within each chapter to illustrate each concept when and where it is presented. Most of the worked-out examples are first solved analytically and then solved using MATLAB in a clear and understandable fashion.

The development of mobile applications has created numerous opportunities across different industries. With these advances, the management of data has been optimized to allow a broader scope of potential uses. Advanced Mobile Technologies for Secure Transaction Processing: Emerging Research and Opportunities is an innovative reference source for the latest academic material on the application of mobile computing for secure payment transactions. Highlighting a range of relevant topics such as information security, electronic money, and online banking, this book is ideally designed for professionals, researchers, practitioners, students, and professionals interested in novel perspectives on mobile technologies and data management.

Mobile communication systems rely on radiofrequency waves to operate. Given the popularity and ubiquity of mobile communication devices as well as network densification, the level of Electromagnetic Field (EMF) exposure to the public is expected to rise significantly over the next few years. Although there is no clear evidence linking short-term exposure to EMF emission from wireless communication systems with adverse health effects, the International Agency for Research on Cancer (IARC) has concluded that EMF radiation is possibly carcinogenic. To cope with the concerns of the general public, the European Environmental Agency has recommended non-technical precautionary approaches to minimize exposure to EMF emissions. Rather than relying on these non-technical approaches, EMF, latency, network resilience and connection density, alongside traditional criteria such as spectral efficiency and energy efficiency are expected to take centre stage in the development of 5G systems. This book focuses on innovative EMF exposure research for future generations of mobile and wireless communications. This timely publication highlights the novel work done on reducing EMF emissions in future mobile communication systems and how to develop smart integrated technical solutions.

Sealed Lead Acid...Nickel Cadmium...Lithium Ion...
How do you balance battery life with performance and cost?
This book shows you how!
Now that "mobile" has become the standard, the consumer not only expects mobility but demands power longevity in wireless devices. As more and more features, computing power, and memory are packed into mobile devices such as iPods, cell phones, and cameras, there is a large and growing gap between what devices can do and the amount of energy engineers can deliver. In fact, the main limiting factor in many portable designs is not hardware or software, but instead how much power can be delivered to the device. This book describes various design approaches to reduce the amount of power a circuit consumes and techniques to effectively manage the available power.
Power Management Advice On:
-Low Power Packaging Techniques
-Power and Clock Gating
-Energy Efficient Compilers
-Various Display Technologies
-Linear vs. Switched Regulators
-Software Techniques and Intelligent Algorithms
* Addresses power versus performance that each newly developed mobile device faces
* Robust case studies drawn from the author's 30 plus years of extensive real world experience are included
* Both hardware and software are discussed concerning their roles in power

The Newnes Know It All Series takes the best of what our authors have written to create hard-working desk references that will be an engineer's first port of call for key information, design techniques and rules of thumb. Guaranteed not to gather dust on a shelf!
RF (radio frequency) and wireless technologies drive communication today. This technology and its applications enable wireless phones, portable device roaming, and short-range industrial and commercial application communication such as the supply chain management wonder, RFID. Up-to-date information regarding software defined RF, using frequencies smarter, and, using more of the spectrum, with ultrawideband technology is detailed.
Chapter 1: Survey of RF and Wireless Technology
Chapter 2: Communications Protocols and Modulation
Chapter 3: Transmitters
Chapter 4: Receivers
Chapter 5: Radio Propagation
Chapter 6: Antenna Fundamentals I
Chapter 7: Antenna Fundamentals II.
Chapter 8: Basics of Wireless Local Area Networks
Chapter 9: Outdoor Networks.
Chapter 10: Voice Over Wi-Fi and Other Wireless Technologies
Chapter 11: Security in Wireless Local Area Networks
Chapter 12: System Planning
Chapter 13: System Implementation, Testing, and Optimization
Chapter 14: Next Generation Wireless Networks
Chapter 15: Mobile Ad Hoc Networks
Chapter 16: Wireless Sensor Networks
Chapter 17: Reliable Wireless Networks for Industrial Networks
Chapter 18: Software-Defined Radio
Chapter 19: The Basics of Radio Frequency Identification (RFID) Technology
Chapter 20: UWB Spectrum and Regulation
Chapter 21: Interference and Coexistence
Chapter 22: Direct Sequence UWB
Chapter 23: "Multiband Approach to UWB
Chapter 24: History and Background of Cognitive Radio
Chapter 25: The Software Defined Radio as a Platform for Cognitive Radio
Chapter 26: Cognitive Radio: The Technologies
Chapter 27: Spectrum Awareness
Chapter 28: Direct Sequence and Frequency Hopping Spread Spectrum
Chapter 29: RF Power Amplifiers
Chapter 30: Phase Locked Loop Techniques in Modern Communications Systems
Chapter 31 Orthogonal Frequency Division Multiplexing (OFDM)
*A 360 degree view from best-selling authors including Roberto Aiello, Bruce Fette, and Praphul Chandra
*Hot topics covered including ultrawideband and cognitive radio technologies
*The ultimate hard-working desk reference: all the essential information, techniques, and tricks of the trade in one volume

The book highlights three types of technologies being developed for autonomous solution of navigation problems. These technologies are based on the polarization structure, ultra-broadband and the fluctuation characteristics (slow and fast) of the radiolocation signals. The book presents the problems of intrinsic thermal radio emission polarization and change in radio waves polarization when they are reflected from objects with non-linear properties. The purpose of this book is to develop the foundations for creating autonomous radionavigation systems to provide aviation with navigation systems that will substantially increase its capabilities, specifically acting where satellite technologies do not work. The book is intended for specialists involved in the development and operation of aviation-technical complexes, as well as for specialists of national aviation regulators and ICAO experts dealing with the problems of improving flight safety.

Wireless communications and networks are developing at an accelerated rate. This rapid development has provided individuals with new opportunities for ubiquitous communication accessibility as well as enabled real-time multimedia technologies and their supporting applications. Handbook of Research on Progressive Trends in Wireless Communications and Networking brings together advanced research on diverse topics in wireless communications and networking, including the latest developments in broadband technologies, mobile communications, wireless sensor networks, network security, and cognitive radio networks. This book serves as a comprehensive reference for upper-level students, academicians, and industry professionals interested in uncovering recent advancements in wireless communications and networking.

Exploring Screen Culture via Apple's Mobile Devices: Life through the Looking Glass explores the role of mobile technologies in everyday life via the extended case study of Apple's mobile operating system (iOS) for the iPhone, iPad, and iPod. Via a detailed application (including numerous extended examples) of the experiences associated with Apple's iOS devices, Charles Soukup examines contemporary screen culture and how individuals navigate it via mobile technologies. Mobile devices provide a lifeline that sifts through, limits, and simplifies the complexities of rapid, vast, circulating information in postmodern culture. Particularly, simple, game-like applications with clear rules and numerical outcomes exceptionally focus, frame, and filter an overwhelming media-saturated culture. Rather than merely outlining the problems associated with a world dominated by digital screens, Exploring Screen Culture via Apple's Mobile Devices offers a means for understanding screen culture as well as viable solutions to the challenges facing contemporary social life.

Awarded by the International Calabria's Prize!
This multidisciplinary volume originates from lectures presented at a short course on wireless communications in Capri, Italy. This globally attended conference has produced an exceptional book written by pioneers in the field. Lecturers at Capri included pillars in the fields of electromagnetics, communications, information technology and mathematics. As communications technology becomes increasingly wireless, an interdisciplinary viewpoint is necessary for professionals to correct problems and avoid others before they occur.
"Wireless Networks" covers critical technology within WLAN, ad hoc networks, data distribution, TV, radio, and personal mobile devices. As networks become wireless, engineers face increased difficulty securing its malleable boundaries. This book discusses security solutions such as sensor technology that prevent unwanted intrusion. Connectivity is also addressed, featuring chapters on antennas, bandwidth and frequencies. Editors Franceschetti and Stornelli have done a great service to the wireless communications community in creating a compendium that delivers this spectrum of essential information in one reference.
*Presents a uniquely panoramic view of wireless networks with viewpoints from engineering, computing, and mathematics
*The technology is discussed in theory as well as in practice to help engineers design and modify networks
*Globally recognized experts share their critical insight on sensor technology, transfering protocol, ad-hoc networks, and more

Mobile Broadband Multimedia Networks: Techniques, Models and Tools for 4th Generation Communication Networks provides the main results of the prestigious and well known European COST 273 research project on the development of next generation mobile and wireless communication systems.
Based on the applied research of over 350 participants in academia and industry, this book focuses on the radio aspects of mobile and wireless broadband multimedia communications, by exploring and developing new methods, models, techniques, strategies and tools towards the implementation of 4th generation mobile and wireless communication systems.
This complete reference includes topics ranging from transmission and signal processing techniques to antennas and diversity, ultra wide band, MIMO and reference scenarios for radio network simulation and evaluation.
This book will be an ideal source of the latest developments in mobile multimedia broadband technologies for researchers, R&D engineers, graduates and engineers in industry implementing simulation models and conducting measurements.
* Based on the well known and respected research of the COST 273 project 'Towards Mobile Broadband Multimedia Networks', whose previous models have been adopted by standardisation bodies such as ITU, ETSI and 3GPP
* Gives methods, techniques, models and tools for developing 4th generation mobile and wireless communication systems
* Includes the latest development of key technologies and methods such as MIMO systems, ultra wide-band and OFDM

This book introduces the sources and historic collection campaigns of resource allocation in wireless communication systems. The unique characteristics of MIMO-OFDMA systems are thoroughly studied and summarized. Remarks on resource allocation and spectrum sharing are also presented, which demonstrate the great value of resource allocation techniques, but also introduce distinct challenges of resource allocation in MIMO-OFDMA systems. Novel resource allocation techniques for OFDMA Systems are surveyed from various applications (e.g., for unicast, or multicast with Guaranteed BER and Rate, subcarrier and power allocation with various detectors, low-complexity energyefficient resource allocation, etc.) in this book. Due to the high mobility and low latency requirements of 5G wireless communications, this book discusses how to deal with the imperfect CSI. It also discusses how to deal with e.g., throughput maximization, outage probabilities maximization and guarantee, energy efficiency, physical-layer security issues with feedback channel capacity constraints, in order to characterize and understand the applications of practical scenes. This book will target professionals & researchers working in the fields of Wireless Communications and Networking, Resource Allocation and Transmissions. Advanced-level students in electrical engineering and computer science will also find this book useful as a secondary textbook.

The continuous advances in mobile and web technology are forming the areas of software and systems development and the connection between service users and providers. Mobile and Web Innovations in Systems and Service-Oriented Engineering offers widespread knowledge on modern organizations and the complications of the current globalized computing environment. This book is aimed at both industry and academia on the multidisciplinary field of service-oriented engineering.

Quality of service provides different priorities to different users to guarantee a certain level of performance to a data flow in accordance with requests from the Internet service provider policy. Quality of Service Architectures for Wireless Networks: Performance Metrics and Management presents a comprehensive collection of quality of service mechanisms for various access technologies and introduces existing and traditional approaches to traffic management for wireless technologies. With expert international contributions, this critical mass of knowledge covers both academic and industry-based state-of-the-art techniques and ongoing research.

This book systematically presents the operating principles and technical characteristics of the main radio navigating systems (RNSs) that make it possible to adequately evaluate the corresponding scratch indexes and levels of air safety for air vehicles, the chief concern of the International Civil Aviation Organization (ICAO). The book discusses how RNS systems substantially determine navigation accuracy and reliability, and therefore air safety; in addition, it presents practical solutions to problems arising in the operation and development of RNS systems.

Wireless Sensor Networks (WSNs) and the Internet of Things are facing tremendous advances both in terms of energy-efficiency as well as in the number of available applications. Consequently, there are challenges that need to be tackled for the future generation of WSNs. After giving an overview of the WSN protocols and IEEE 802.15.4 standard, this book proposes IEEE 802.15.4 Medium Access Control (MAC) sub-layer performance enhancements by employing not only RTS/CTS combined with packet concatenation but also scheduled channel poling (MC-SCP). Results have shown that the use of the RTS/CTS mechanism improves channel efficiency by decreasing the deferral time before transmitting a data packet. Furthermore, the Sensor Block Acknowledgment MAC (SBACK-MAC) protocol enables more efficiency as it allows the aggregation of several acknowledgement responses in one special Block Acknowledgment (BACK) Response packet. The throughput and delay performance have been mathematically derived under both ideal conditions (a channel environment with no transmission errors) and non-ideal conditions (with transmission errors). Simulation results successfully validate the proposed analytical models. This research reveals the importance of an appropriate design for the MAC sub-layer protocol for the desired WSN application. Depending on the mission of the WSN application, different protocols are required. Therefore, the overall performance of a WSN application certainly depends on the development and application of suitable e.g., MAC, network layer protocols.

"Wifi, WiMAX, and Cellular Multihop Network"s presents an overview of WiFi-based and WiMAX-based multihop relay networks. As the first text to cover IEEE 802.16j multihop hop relay technology, this revolutionary resource explores the latest advances in multi-hop and ad-hoc networking. Not only does this reference provide the technological aspects, but also the applications for the emerging technology and architectural issues. Ranging from introductory material to advanced topics, this guidebook, plus PowerPoint slides, is essential for engineers, researchers, and students interested in learning more about WiFi and WiMAX multihop relay networks.

As WLANs (Wireless Local Area Networks) become increasingly common, it's becoming vital to be able to test them for proper performance and to optimize their operation. This book, written by a member of the IEEE committee that develops WLAN standards, is the first book addressing that need. It covers test equipment and methods for the RF (wireless) and physical layers of WLAN, protocols, the application layer, and manufacturing testing. The emphasis throughout is on underlying engineering principles along with modern metrics and methodologies, ensuring this book gives both a solid theoretical background along with field-proven techniques and applications.
Much of the subject material is drawn from the author's own hands-on experience in the field, as an architect and engineer of WLAN test equipment, and a writer of standards for measuring WLAN equipment performance. A particularly engaging chapter deals with manufacturing test, describing some of the different manufacturing test setups and equipment. A concise introduction to deployment testing of "hotspots" and WLANs in enterprises is also provided.
*Gives proven techniques for maximizing the coverage area and performance of wireless networks
*Author's insider position on the IEEE committee developing standards for WLAN testing ensures timeliness and technical integrity of the material
*Includes coverage of newer multiple input/multiple output (MIMO) wireless networks

The Complete "Tool Kit" for the Hottest Area in RF/Wireless Design!
Short-range wireless-communications over distances of less than 100 meters-is the most rapidly growing segment of RF/wireless engineering. Alan Bensky is an internationally recognized expert in short-range wireless, and this new edition of his bestselling book is completely revised to cover the latest developments in this fast moving field.
You'll find coverage of such cutting-edge topics as:
- architectural trends in RF/wireless integrated circuits
- compatibility and conflict issues between different short-range wireless systems
- "Zigbee" and related new IEEE standards for short-range communications
- latest U.S. and international regulatory standards for spread spectrum, ultra wideband, and other advanced communications techniques
Alan Bensky also thoroughly discusses the fundamentals of radio signal propagation, communications protocols and modulation methods, information theory, antennas and transmission lines, receivers, transmitters, radio system design, and how to successfully implement a short-range wireless system. All material has been carefully updated and revised to make it as technically up-to-the-minute as possible. The accompanying CD includes Mathcad worksheets to greatly simplify common design tasks and calculations.
You'll also find coverage of Bluetooth, "Wi-Fi" and related 802.11 variants, digital modulation methods, and other essential information for planning and designing short-range wireless hardware and networks.
This new edition will, like the first edition, be an invaluable reference for engineers and technical professionals who design, support, market, and maintain short-range wireless communications systems.
* No other book contains EVERYTHING pertaining to short-range wireless design.
* Covers all the hot topics like 802.11, Zigbee, Wi-Fi and Bluetooth.
* Valuable CD-Rom included that will simplify the design process.

Underwater wireless sensor networks (UWSN) are envisioned as an aquatic medium for a variety of applications including oceanographic data collection, disaster management or prevention, assisted navigation, attack protection, and pollution monitoring. Similar to terrestrial wireless sensor networks (WSN), UWSNs consist of sensor nodes that collect the information and pass it to a base station; however, researchers have to face many challenges in executing the network in an aquatic medium. Energy-Efficient Underwater Wireless Communications and Networking is a crucial reference source that covers existing and future possibilities of the area as well as the current challenges presented in the implementation of underwater sensor networks. While highlighting topics such as digital signal processing, underwater localization, and acoustic channel modeling, this publication is ideally designed for machine learning experts, IT specialists, government agencies, oceanic engineers, communication experts, researchers, academicians, students, and environmental agencies concerned with optimized data flow in communication network, securing assets, and mitigating security attacks.

Integrating Wireless Devices in the Enterprise provides a solution that every enterprise can use, described in terms of scope, feasibility and return on investment, architecture, and data structures. The solution Wheeler offers here is scalable from a single handheld and single desktop to small workgroup to large enterprise environments. The number of devices is not a determinant of success or failure. It's more often the planning and managing of them that's crucial. This book also provides tools to deal with the increase of devices, and the corresponding complexity of managing those resources and the increase in cost to the firm.
*Synchronize networked data with the mobile device fleet
*Synchronize a mobile device with networked data that is mission critical
*Connect any device to any data source, over any network

A comprehensive tutorial on the design and practical applications of antenna arrays

An antenna array is an assembly of antenna elements that maximizes a received or transmitted signal in a desired direction. This practical book covers a wide range of antenna array topics that are becoming increasingly important in wireless applications, with emphasis on array design, applications, and computer modeling.

Each chapter in "Antenna Arrays" builds upon the previous chapter, progressively addressing more difficult material. Beginning with basic electromagnetics/antennas/antenna systems information, the book then deals with the analysis and synthesis of arrays of point sources and their associated array factors. It presents a sampling of different antenna elements that replace these point sources, then presents element configurations that do not have to lie along a line or in a plane.

The complex and difficult-to-predict interactions of elements and electromagnetic waves are introduced, along with computer modeling and experiments that are necessary for predicting the performance of arrays where mutual coupling is important. Then, various approaches to getting signals to and from the array elements to a computer where the signal detection takes place are explored, as are the numerical techniques behind smart antennas.

The book emphasizes the computational methods used in the design and analysis of array antennas. Also featured are signal processing and numerical modeling algorithms, as well as pictures of antenna arrays and components provided by industry and government sources, with explanations of how they operate.

Fully course-tested, "Antenna Arrays" serves as a complete text in phased array design and theory for advanced undergraduate- and graduate-level courses in electronics and communications, as well as a reference for practicing engineers and scientists in wireless communications, radar, and remote sensing.

Based on cutting-edge research projects in the field, this comprehensive 4-volume book series provides the latest details and covers the most impactful aspects of mobile, wireless, and broadband communications development. These books present key systems and enabling technologies in a clear and accessible manner, offering you a detailed roadmap the future evolution of next generation communications. Drawing upon the insights of leading experts in the field, each of the four volumes is dedicated to an area of critical importance, including Radio Interfaces; Networks, Services and Applications; Reconfigurability; and Ad Hoc Networks.

Fourth generation wireless networks are expected to provide comprehensive and secure IP-based solutions, facilitating existing and emerging services such as voice, data, streamed multimedia, sensory, e-health, and social networking. It is expected that 4G will be provided to users on an "Anytime, Anywhere" basis and at much higher data rates compared to the current and previous mobile generations. Fourth-Generation Wireless Networks: Applications and Innovations presents a vision for the coming years in terms of emerging fourth generation (4G) wireless technology trends and best practices. It explores the resulting challenges and technical opportunities that will arise in creating and delivering 4G networks for the emerging applications and services. This book also examines the fundamentals of advanced physical layer and radio resource management as the basis for cross layer and cross network optimization that will emerge for increased mobility and services in video, cloud computing virtualization, entertainment, education, health, and security. This book have been organized especially for researchers, students, network engineers and designers and leaders of emerging companies, decision makers in standards, consumers, and product developers.