A Coherent Systems View of Wireless and Cellular Network Design and Implementation Written for senior-level undergraduates, first-year graduate students, and junior technical professionals,Introduction to Wireless Systemsoffers a coherent systems view of the crucial lower layers of todayrs"s cellular systems. The authors introduce todayrs"s most important propagation issues, modulation techniques, and access schemes, illuminating theory with real-world examples from modern cellular systems. They demonstrate how elements within todayrs"s wireless systems interrelate, clarify the trade-offs associated with delivering high-quality service at acceptable cost, and demonstrate how systems are designed and implemented by teams of complementary specialists. Coverage includes Understanding the challenge of moving information wirelessly between two points Explaining how system and subsystem designers work together to analyze, plan, and implement optimized wireless systems Designing for quality reception: using the free-space range equation, and accounting for thermal noise Understanding terrestrial channels and their impairments, including shadowing and multipath reception Reusing frequencies to provide service over wide areas to large subscriber bases Using modulation: frequency efficiency, power efficiency, BER, bandwidth, adjacent-channel interference, and spread-spectrum modulation Implementing multiple access methods, including FDMA, TDMA, and CDMA Designing systems for todayrs"s most common forms of traffic-both "bursty" and "streaming" Maximizing capacity via linear predictive coding and other speech compression techniques Setting up connections that support reliable communication among users Introduction to Wireless Systemsbrings together the theoretical and practical knowledge readers need to participate effectively in the planning, design, or implementation of virtually any wireless system.

This text is intended to provide a senior undergraduate student in electrical or computer engineering with a systems-engineering perspective on the design and analysis of a wireless communication system. The focus of the text is on cellular telephone systems, as these systems are familiar to students; rich enough to encompass a variety of propagation issues, modulation techniques, and access schemes; and narrow enough to be treated meaningfully in a text that supports a single course. The presentation is limited to what cellular systems engineers call the "air interface" and what network engineers call the "physical layer."The presentation is unique in a number of ways. First, it is aimed at undergraduate students, whereas most other textbooks written about wireless systems are intended for students either at the graduate level or at the community college level. In particular, the presentation combines a clear narrative with examples showing how theoretical principles are applied in system design. The text is based on ten years' experience in teaching wireless systems to electrical and computer engineering seniors. The lessons learned from their questions and responses have guided its development. The text not only presents the basic theory but also develops a coherent, integrated view of cellular systems that will motivate the undergraduate student to stay engaged and learn more.Second, the text is written from a systems-engineering perspective. In this context a "system" comprises many parts, whose properties can be traded off against one another to provide the best possible service at an acceptable cost. A system with the complexity of a cellular network can be designed and implemented only by a team of component specialists whose skills complement one another. Top-level design is the responsibility of systems engineers who can translate market requirements into technical specifications, who can identify and resolve performance trade-off issues, and who can set subsystem requirements that "flow down" to the subsystem designers. The text introduces students to the concept that specialists from a wide range of engineering disciplines come together to develop a complex system. Theory and contemporary practice are developed in the context of a problem-solving discipline in which a divide-andconquer approach is used to allocate top-level functional system requirements to lower-level subsystems. Standard analysis results are developed and presented to students in a way that shows how a systems engineer can use these results as a starting point in designing an optimized system. Thus an overlying systems-engineering theme ties together a wide variety of technical principles and analytical techniques.This text comprises eight chapters. An introductory chapter sets out the systems-engineering story. Chapters 2 and 3 introduce the air interface by considering how to provide enough power over a wide enough area to support reliable communication. Chapter 2 introduces the free-space range equation and thermal noise. On completing this chapter, students should be aware of the dependence of received power on range and of the role of noise in determining how much power is enough for quality reception. Chapter 3 introduces the terrestrial channel and its impairments, including the effects of shadowing and multipath reception. Next, Chapter 4 introduces the principle of frequency reuse and the resulting cellular system structure. The goal of this chapter is to show how a communication system can be extended to provide service over a virtually unlimited area to a virtually unlimited number of subscribers.Once a power link is established, information must be encoded to propagate effectively over that link. Chapter 5 introduces modulation. The emphasis is on digital techniques common to cellular systems. Of particular interest are frequency efficiency, power efficiency and bit error rate, bandwidth, and adjacent-ch