IMPLEMENTING SOFTWARE DEFINED RADIO EUGENE GRAYVER PDF

It seems that you're in Germany. We have a dedicated site for Germany. Software Defined Radio makes wireless communications easier, more efficient, and more reliable. This book bridges the gap between academic research and practical implementation. When beginning a project, practicing engineers, technical managers, and graduate students can save countless hours by considering the concepts presented in these pages. The author covers the myriad options and trade-offs available when selecting an appropriate hardware architecture.

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Software Defined Radio makes wireless communications easier, more efficient, and more reliable. This book bridges the gap between academic research and practical implementation. When beginning a project, practicing engineers, technical managers, and graduate students can save countless hours by considering the concepts presented in these pages. The author covers the myriad options and trade-offs available when selecting an appropriate hardware architecture.

As demonstrated here, the choice between hardware- and software-centric architecture can mean the difference between meeting an aggressive schedule and bogging down in endless design iterations.

Some of the key concepts covered are: Choosing the right architecture for the market — laboratory, military, or commercial, Hardware platforms — FPGAs, GPPs, specialized and hybrid devices, Standardization efforts to ensure interoperability and portabilitym State-of-the-art components for radio frequency, mixed-signal, and baseband processing.

The text requires only minimal knowledge of wireless communications; whenever possible, qualitative arguments are used instead of equations. An appendix provides a quick overview of wireless communications and introduces most of the concepts the readers will need to take advantage of the material. An essential introduction to SDR, this book is sure to be an invaluable addition to any technical bookshelf.

Springer Professional. Back to the search result list. Table of Contents Frontmatter Chapter 1. What is a Radio? Before discussing software-defined radio, we need to define: what is a radio. For the purposes of this book, a radio is any device used to exchange digital information between point A and point B.

This definition is somewhat broader than the standard concept of a radio in which it includes both wired and wireless communications. In fact, most of the concepts that will be covered here are equally applicable to both types of communications links. In most cases no distinction is made, since it is obvious that, for example, a discussion of antennas is only applicable to wireless links. At first glance most radios appear to be single function—a first-generation cellular phone sends your voice, while a WiFi base station connects you to the Internet.

Upon closer inspection, both of these devices are actually quite flexible and support different waveforms. Looking at all the radio devices in my house, only the garage door opener and the car key fob seem to be truly fixed.

It takes time for a new technology to evolve from the lab to the field. Since SDR is relatively new, it is not yet clear where it can be applied. Some of the most significant advantages and applications are summarized below. The advantages of SDR are described throughout this book. Transistors are cheap and getting cheaper. This key observation has made SDR a reality. A true SDR has to implement at least some of the physical layer functionality in software.

For the purpose of this chapter the definition is expanded to include software-controlled radios. Flexible and programmable digital signal processing can be implemented on a wide range of devices. This chapter provides an overview of the different types of devices suitable for implementing the DSP portion of an SDR. One or more devices described in Chapter 5 can be used to implement an SDR.

The receiver in an SDR almost always requires significantly more computational resources than the transmitter. Thus, only receiver architectures will be discussed in this chapter. SDR hardware has matured to the point where wide deployment is called for.

However, many potential users are concerned that lack of standards makes adopting a particular hardware platform risky since software and firmware developed for that platform may not be portable to other hardware. SDR standards must address three different parts of a waveform life cycle. As discussed in Sect.

In this section,we will explore these platforms in some detail. As discussed in Chap. In this chapter we consider some high-level tradeoffs in existing RF front end architectures and how they apply to SDR. The tradeoffs for receivers and transmitters are quite different. The state of the art in digital and RF components changes much faster than new editions of this book can hope to track. This section aims to capture the commercially available technology at the end of and is likely to be woefully out of date by However, even if technology has advanced, many of the trends and approaches described here will remain valid for a few more years.

Tools used to develop SDR are equally applicable to single-function radios and other complex systems with extensive DSP requirements. The required toolset and development flow strongly depends on the hardware architecture. Few decisions engender as much passion as the choice of tools and languages for a new development. Java, Verilog vs. Java makes only a small difference, and the expertise of the key team members counts for a lot.

However, switching between classes of tools e. VHDL vs. Any new design of a reasonably sophisticated radio should incorporate certain SDR features. The additional up-front time and costs incurred to add flexibility and programmability will be recouped by reducing the number of design changes later and a potentially larger market.

Title Implementing Software Defined Radio. Print ISBN Electronic ISBN Author: Eugene Grayver.

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