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Über dieses Buch

This book describes the design of Software Radio (SWR). Rather than providing an overview of digital signal processing and communications, this book focuses on topics which are crucial in the design and development of a SWR, explaining them in a very simple, yet precise manner, giving simulation results that confirm the effectiveness of the proposed design. Readers will gain in-depth knowledge of key issues so they can actually implement a SWR.



Chapter 1. Software Radio: From an Idea to Reality

This chapter offers a general introduction on software radio. It provides the current state of the art on this technology clarifying the differences between software defined radio, software radio and adaptive intelligent software radio (also known as cognitive radio). The chapter also describes the characteristics and the benefits of using software radio technology along with the main issues connected to its design and commercial development. This chapter aims to provide a general picture of all the topics that are covered in this book.

Elettra Venosa, fredric j. harris, Francesco A. N. Palmieri

Chapter 2. Sampling Rate Selection, Timing Jitter and Time Interleaved ADCs

A software radio, which receives multiple signals having different bandwidths at randomly located center frequencies, should sample at very low-rates, allowing flexible and efficient handling of multi-standard, multi-band and asynchronous digital data streams.

Elettra Venosa, fredric j. harris, Francesco A. N. Palmieri

Chapter 3. Radio Design

The issue of optimizing the use of the radio spectrum is becoming more and more pressing because of the growing deployment of new wireless devices and applications. The current inefficient usage of the limited spectrum resources requires changes in the spectrum allocation policy and urges the development of innovative communication technologies that use it in a more intelligent and flexible way.

Elettra Venosa, fredric j. harris, Francesco A. N. Palmieri

Chapter 4. Spectral Analysis

Spectrum analyzers for communication systems are traditionally modeled by a bank of narrowband filters with equally spaced frequency centers and bandwidths. This matches the structure of communication system channelized bandwidth frequency assignments that in turn influenced the design of early swept frequency spectrum analyzers. They were designed around a fixed bandwidth intermediate frequency filter through which spectral regions are probed by shifting them to the filter with a linear time-frequency swept heterodyne.

Elettra Venosa, fredric j. harris, Francesco A. N. Palmieri

Chapter 5. Synchronization

In this chapter we consider the time, frequency and phase synchronization issue. We cannot avoid dealing with this topic because no radio receiver can operate without being properly synchronized. If the radio is not synchronized none of the sub-systems composing it can operate: not the matched filters, not the equalizer, not the detectors; not even the error correcting codes or the source decoding will work.

Elettra Venosa, fredric j. harris, Francesco A. N. Palmieri


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